A 1.75 kpc/h Separation Dual AGN at z=0.36 in the COSMOS Field (2009)
Comerford, Julia M., Griffith, Roger L., Gerke, Brian F., Cooper, Michael C., Newman, Jeffrey A., Davis, Marc, ...
We present strong evidence for dual active galactic nuclei (AGN) in the z=0.36 galaxy COSMOS J100043.15+020637.2. COSMOS Hubble Space Telescope (HST) imaging of the galaxy shows a tidal tail,...
Reliable, User-Contributed GSM Cell-Tower Positioning Using Context-Aware Photos (2009)
Shane Ahern, Marc Davis, Simon King, Mor Naaman, Rahul Nair
Data regarding the physical location of GSM cell towers is important for many practical applications. Unfortunately, such data is not freely available in many countries. We present a system where...
Bell, Eric, Davis, Marc, Dey, Arjun, Van Dokkum, Pieter, Ellis, Richard, Eisenstein, Daniel, ...
Over the last decade optical spectroscopic surveys have characterized the low redshift galaxy population and uncovered populations of star-forming galaxies back to z ~ 7. This work has shown that the...
AEGIS: The Clustering of X-ray AGN Relative to Galaxies at z~1 (2009)
Coil, Alison L., Georgakakis, Antonis, Newman, Jeffrey A., Cooper, Michael C., Croton, Darren, Davis, Marc, ...
We measure the clustering of non-quasar X-ray AGN at z=0.7-1.4 in the AEGIS field. Using the cross-correlation of 113 Chandra-selected AGN, with a median log L_X=42.8 erg s^-1, with ~5,000 DEEP2...
Constraints on the star formation histories of galaxies from z∼ 1 to 0 (2009)
Chen, Yan-Mei, Wild, Vivienne, Kauffmann, Guinevere, Blaizot, Jérémy, Davis, Marc, Noeske, Kai, ...
AEGIS: the clustering of x-ray active galactic nucleus relative to galaxies at z similar to 1 (2009)
Coil, Alison L., Georgakakis, Antonis, Newman, Jeffrey A., Cooper, Michael C., Croton, Darren, Davis, Marc, ...
We measure the clustering of nonquasar X-ray active galactic nucleus (AGN) at z = 0.7–1.4 in the AEGIS field. Using the cross-correlation of 113 Chandra-selected AGN, with a median log LX =...
Montero-Dorta, Antonio D., Croton, Darren J., Yan, Renbin, Cooper, Michael C., Newman, Jeffrey A., Georgakakis, Antonis, ...
We measure the dependence of the active galactic nuclei (AGN) fraction on local environment at z∼ 1, using spectroscopic data taken from the DEEP2 Galaxy Redshift Survey, and Chandra X-ray data...
Inspiralling Supermassive Black Holes: A New Signpost for Galaxy Mergers (2008)
Comerford, Julia M., Gerke, Brian F., Newman, Jeffrey A., Davis, Marc, Yan, Renbin, Cooper, Michael C., ...
Because structure in the Universe is built up through galaxy mergers and nearly all galaxies host a central supermassive black hole (SMBH), some galaxies should possess two SMBHs near their centers...
Constraints on the star formation histories of galaxies from z~1 to z~0 (2008)
Chen, Yan-Mei, Wild, Vivienne, Kauffmann, Guinevere, Blaizot, Jeremy, Davis, Marc, Noeske, Kai, ...
We present a new method to estimate the average star formation rate per unit stellar mass (SSFR) of a stacked population of galaxies. We combine the spectra of 600-1000 galaxies with similar stellar...
1 Active Capture Design Case Study: SIMS Faces (2008)
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial...
Abstract Media Streams: An Iconic Visual Language for Video Annotation (2008)
Bibliographic Reference, Marc Davis
In order to enable the search and retrieval of video from large archives, we need a representation of video content. Although some aspects of video can be automatically parsed, a detailed...
A Strong-Lens Survey in AEGIS: the influence of large scale structure (2008)
Moustakas, Leonidas A., Marshall, Phil, Newman, Jeffrey A., Coil, Alison L., Cooper, Michael C., Davis, Marc, ...
The DEEP2 Galaxy Redshift Survey: Environments of Poststarburst Galaxies at z~0.1 and z~0.8 (2008)
Yan, Renbin, Newman, Jeffrey A., Faber, S. M., Coil, Alison L., Cooper, Michael C., Davis, Marc, ...
Postststarburst (K+A) galaxies are candidates for galaxies in transition from a star-forming phase to a passively-evolving phase. We have spectroscopically identified large samples of K+A galaxies...
Interfaces and Presentation (e.g., HCI)]: User Interfaces General Terms (2008)
Shane Ahern, Marc Davis, Dean Eckles, Simon King, Mor Naaman
ZoneTag is a rich mobile client that enables context-aware upload of photographs from cameraphones. In addition to automatically supplying location metadata for each photograph, ZoneTag supports...
Mobile Media Metadata: Metadata Creation System for Mobile Images (2008)
In the 2003, more camera phones were sold worldwide than digital cameras. With this new platform, we can leverage regularities in the spatio-temporal context and social community of media capture and...
Pirates to Patriots: Fair Use for Digital Media (2008)
Technologies, laws, and policies developed in recent years make it impractical and even illegal to use media in ways that have been the right of private citizens, the press, and academics for more...
Computational Media Aesthetics Editing Out Video Editing (2008)
Reprinted from above reference. This material is posted here with permission of the IEEE. Internal or personal use of this material is permitted. However, permission to reprint/republish this...
Chitra L. Madhwacharyula, Marc Davis, Philippe Mulhem, Mohan S. Kankanhalli
This paper addresses the problem of processing the annotations of preexisting video productions to enable reuse and repurposing of metadata. We introduce the concept of ‘Automatic content based...
Marc Davis, Michael Smith, John Canny, Nathan Good, Simon King, Rajkumar Janakiraman
In this paper, we focus on the use of context-aware, collaborative filtering, machine-learning techniques that leverage automatically sensed and inferred contextual metadata together with computer...
Montero-Dorta, Antonio D., Croton, Darren J., Yan, Renbin, Cooper, Michael C., Newman, Jeffery A., Georgakakis, Antonis, ...
We measure the dependence of the AGN fraction on local environment at z~1, using spectroscopic data taken from the DEEP2 Galaxy Redshift Survey, and Chandra X-ray data from the All-Wavelength...
Coil, Alison L., Newman, Jeffrey A., Croton, Darren J., Cooper, Michael C., Davis, Marc, Faber, S. M., ...
We present measurements of the color and luminosity dependence of galaxy clustering at z∼ 1 in the DEEP2 Galaxy Redshift Survey. Using volume-limited subsamples in bins of both color and...
Jonathan E. Baker, Marc Davis, Michael A. Strauss, Ofer Lahav
We have used the Optical Redshift Survey (ORS; Santiago et al. 1995) to construct the gravity field due to fluctuations in the galaxy density field out to distances of 8000 km s \Gamma1. At large...
A Galaxy-Weighted Measure of the Relative Peculiar Velocity Dispersion (2007)
Marc Davis Depts, Marc Davis, Amber Miller
The relative pair dispersion of galaxies has for the past decade been the standard measure of the thermal energy of fluctuations in the observed galaxy distribution. This statistic is known to be...
Marc Davis, Adi Nusser, Jeffrey A. Willick
We consider a measure of the peculiar velocity field derived from the Mark III compilation of 2900 spiral galaxies (Willick et al. 1996b), using an analysis method that is substantially free of bias...
Programming With Characters (2007)
INTRODUCTION Programs are hard to build, and even harder to understand after they are built. We lack intuitive interfaces for visualizing and manipulating many parts of programs and the ways in which...
Indications Of Dark Matter Derived From Large Scale Flows (2007)
Marc Davis And, Marc Davis, Adi Nusser
Recent progress in the measurement of relative distances to galaxies has been quite substantial, and catalogs of 3000 galaxies with distances are soon to become available. The peculiar velocity field...
Basílio X. Santiago, Bas'ilio X. Santiago, Michael A. Strauss, Ofer Lahav, Marc Davis, Alan Dressler, ...
We quantify the effects of Galactic extinction on the derived luminosity and diameter functions and on the density field of a redshift sample. Galaxy magnitudes are more affected by extinction than...
The Velocity Field Predicted By The Optical Redshift Survey (2007)
Jonathan Baker, Marc Davis, Michael A. Strauss, Ofer Lahav
We have used the Optical Redshift Survey (ORS; Santiago et al. 1995) to construct the gravity field due to fluctuations in the galaxy density field out to distances of 8000 km s \Gamma1 . At large...
The Deimos Spectrograph (2007)
And Planned Deep, Marc Davis, S. M. Faber
A second generation spectrograph for the Keck telescope is under construction at the Lick Observatory shops and will be delivered to Hawaii in 1999. Starting in the Fall of 1999, we shall begin the...
The DEEP2 Galaxy Redshift Survey: Color and Luminosity Dependence of Galaxy Clustering at z~1 (2007)
Coil, Alison L., Newman, Jeffrey A., Croton, Darren, Cooper, Michael C., Davis, Marc, Faber, S. M., ...
We present measurements of the color and luminosity dependence of galaxy clustering at z~1 in the DEEP2 Galaxy Redshift Survey. Using volume-limited subsamples in bins of both color and luminosity,...
Cooper, Michael C., Newman, Jeffrey A., Weiner, Benjamin J., Yan, Renbin, Willmer, Christopher N. A., Bundy, Kevin, ...
Using galaxy samples drawn from the Sloan Digital Sky Survey and the DEEP2 Galaxy Redshift Survey, we study the relationship between star formation and environment at z ~ 0.1 and z ~ 1. We estimate...
AEGIS: Chandra observation of DEEP2 galaxy groups and clusters (2007)
Fang, Taotao, Gerke, Brian F., Davis, David S., Newman, Jeffrey A., Davis, Marc, Nandra, Kirpal, ...
We present a 200 ks Chandra observation of seven spectroscopically selected, high-redshift (0.75 < z < 1.03) galaxy groups and clusters discovered by the DEEP2 Galaxy Redshift Survey in the...
The DEEP2 galaxy redshift survey: the evolution of the blue fraction in groups and the field (2007)
Gerke, Brian F., Newman, Jeffrey A., Faber, S. M., Cooper, MIchael C., Croton, Darren J., Davis, Marc, ...
We explore the behaviour of the blue galaxy fraction over the redshift range 0.75 ≤z≤ 1.3 in the DEEP2 Survey, both for field galaxies and for galaxies in groups. The primary aim is to...
Cooper, Michael C., Newman, Jeffery A., Coil, Alison L., Croton, Darren J., Gerke, Brian F., Yan, Renbin, ...
Using a sample of 19 464 galaxies drawn from the DEEP2 Galaxy Redshift Survey, we study the relationship between galaxy colour and environment at 0.4 < z < 1.35 . We find that the fraction of...
Conroy, Charlie, Prada, Francisco, Newman, Jeffrey A., Croton, Darren, Coil, Alison L., Conselice, Christopher J., ...
We measure the evolution in the virial mass-to-light ratio (M 200/LB) and virial-to-stellar mass ratio (M 200/M*) for isolated ∼L* galaxies between z ∼ 1 and z ∼ 0 by combining data...
Schiavon, Ricardo P., Faber, S.M., Konidaris, Nicholas, Graves, Genevieve, Willmer, Christopher N.A., Weiner, Benjamin J., ...
The DEEP2 Galaxy Redshift Survey: AEGIS observations of a Dual AGN at z = 0.7 (2006)
Newman, Jeffrey A., Lotz, Jennifer, Yan, Renbin, Barmby, P., Coil, Alison L., ...
The DEEP2 galaxy redshift survey: the evolution of the blue fraction in groups and the field (2006)
Gerke, Brian F., Newman, Jeffrey A., Faber, S. M., Cooper, Michael C., Croton, Darren J., Davis, Marc, ...
We explore the behavior of the blue galaxy fraction over the redshift range 0.75
The DEEP2 Galaxy Redshift Survey: AEGIS Observations of a Dual AGN at z=0.7 (2006)
Gerke, Brian F., Newman, Jeffrey A., Lotz, Jennifer, Yan, Renbin, Barmby, P., Coil, Alison L., ...
We present evidence for a dual Active Galactic Nucleus (AGN) within an early-type galaxy at z=0.709 in the Extended Groth Strip. The galaxy lies on the red sequence, with absolute magnitude M_B=-21.0...
The DEEP2 Galaxy Redshift Survey: Evolution of the Color-Density Relation at 0.4 < z < 1.35 (2006)
Cooper, Michael C., Newman, Jeffrey A., Coil, Alison L., Croton, Darren J., Gerke, Brian F., Yan, Renbin, ...
Using a sample of 19,464 galaxies drawn from the DEEP2 Galaxy Redshift Survey, we study the relationship between galaxy color and environment at 0.4 < z < 1.35. We find that the fraction of galaxies...
The DEEP2 Galaxy Redshift Survey: Clustering of Quasars and Galaxies at z=1 (2006)
Coil, Alison L., Hennawi, Joseph F., Newman, Jeffrey A., Cooper, Michael C., Davis, Marc
We present the clustering of DEEP2 galaxies at 0.7
Evolution in the Halo Masses of Isolated Galaxies between z~1 and z~0: From DEEP2 to SDSS (2006)
Conroy, Charlie, Prada, Francisco, Newman, Jeffrey A., Croton, Darren, Coil, Alison L., Conselice, Christopher J., ...
We measure the evolution in the virial mass-to-light ratio (M_{200}/L_B) and virial-to-stellar mass ratio (M_{200}/M_\ast) for isolated ~ L* galaxies between z~1 and z~0 by combining data from the...
Cooper, Michael C., Newman, Jeffrey A., Croton, Darren J., Weiner, Benjamin J., Willmer, Christopher N. A., Gerke, Brian F., ...
We study the mean environment of galaxies in the DEEP2 Galaxy Redshift Survey as a function of rest-frame color, luminosity, and [OII] equivalent width. The local galaxy overdensity for >14,000...
Schiavon, Ricardo P., Faber, S. M., Konidaris, Nicholas, Graves, Genevieve, Willmer, Christopher N. A., Weiner, Benjamin J., ...
As part of the DEEP2 galaxy redshift survey, we analyze absorption line strengths in stacked Keck/DEIMOS spectra of red field galaxies with weak to no emission lines, at redshifts 0.7
Position paper, tagging, taxonomy, flickr, article, toread (2006)
Cameron Marlow, Mor Naaman, Danah Boyd, Marc Davis
In recent years, tagging systems have become increasingly popular. These systems enable users to add keywords (i.e., “tags”) to Internet resources (e.g., web pages, images, videos) without...
Generating summaries for large collections of geo-referenced photographs (2006)
Er Jaffe, Mor Naaman, Tamir Tassa, Marc Davis
We describe a framework for automatically selecting a summary set of photographs from a large collection of geo-referenced photos. The summary algorithm is based on spatial patterns in photo sets,...
HT06, tagging paper, taxonomy, Flickr, academic article, to read (2006)
Cameron Marlow, Mor Naaman, Danah Boyd, Marc Davis
In recent years, tagging systems have become increasingly popular. These systems enable users to add keywords (i.e., “tags”) to Internet resources (e.g., web pages, images, videos) without...
Using context and similarity for face and location identification (2006)
Marc Davis, Michael Smith, Fred Stentiford, Adetokunbo Bamidele, John Canny, Nathan Good, ...
This paper describes a new approach to the automatic detection of human faces and places depicted in photographs taken on cameraphones. Cameraphones offer a unique opportunity to pursue new...
Cooper, Michael C., Newman, Jeffrey A., Croton, Darren J., Weiner, Benjamin J., Willmer, Christopher N. A., Gerke, Brian F., ...
We study the mean environment of galaxies in the DEEP2 Galaxy Redshift Survey as a function of rest-frame colour, luminosity, and [O ii] 3727 Å equivalent width. The local galaxy overdensity...
On the Origin of [OII] Emission in Red Sequence and Post-starburst Galaxies (2005)
Yan, Renbin, Newman, Jeffrey A., Faber, S. M., Konidaris, Nicholas, Koo, David, Davis, Marc
We investigate the emission-line properties of galaxies with red rest-frame colors using spectra from SDSS DR4. Emission lines are detected in more than half of the red galaxies. We focus on the...
The DEEP2 Galaxy Redshift Survey: Clustering of Galaxies as a Function of Luminosity at z=1 (2005)
Coil, Alison L., Newman, Jeffrey A., Cooper, Michael C., Davis, Marc, Faber, S. M., Koo, David C., ...
We measure the clustering of DEEP2 galaxies at z=1 as a function of luminosity on scales 0.1 Mpc/h to 20 Mpc/h. Drawing from a parent catalog of 25,000 galaxies at 0.7
The DEEP2 Galaxy Redshift Survey: The Evolution of Void Statistics from z~1 to z~0 (2005)
Conroy, Charlie, Coil, Alison L., White, Martin, Newman, Jeffrey A., Yan, Renbin, Cooper, Michael C., ...
We present measurements of the void probability function (VPF) at z~1 using data from the DEEP2 Redshift Survey and its evolution to z~0 using data from the Sloan Digital Sky Survey (SDSS). We...
The DEEP2 Galaxy Redshift Survey: Clustering of Groups and Group Galaxies at z~1 (2005)
Coil, Alison L., Gerke, Brian F., Newman, Jeffrey A., Ma, Chung-Pei, Yan, Renbin, Cooper, Michael C., ...
We study the clustering properties of groups and of galaxies in groups in the DEEP2 Galaxy Redshift Survey dataset at z~1. Four clustering measures are presented: 1) the group correlation function...
Measuring Galaxy Environments with Deep Redshift Surveys (2005)
Cooper, Michael C., Newman, Jeffrey A., Madgwick, Darren S., Gerke, Brian F., Yan, Renbin, Davis, Marc
We study the applicability of several galaxy environment measures (n^th-nearest-neighbor distance, counts in an aperture, and Voronoi volume) within deep redshift surveys. Mock galaxy catalogs are...
Nancy Van House, Marc Davis, Morgan Ames, Megan Finn, Vijay Viswanathan
Developments in networked digital imaging promise to substantially affect the near-universal experience of personal photography. Designing technology for image capture and sharing requires an...
2004a) From ‘What?’ to ‘Why?’: The Social Uses of Personal Photos (2005)
Nancy Van House, Marc Davis, Yuri Takhteyev, Nathan Good, Anita Wilhelm, Megan Finn
To predict the uses of new technology, we present an approach grounded in science and technology studies (STS) that examines the social uses of current technology. As part of ongoing research on...
Nancy Van House, Marc Davis, Morgan Ames, Megan Finn, Vijay Viswanathan
Developments in networked digital imaging promise to substantially affect the near-universal experience of personal photography. Designing technology for image capture and sharing requires an...
MMM2: Mobile Media Metadata for Media Sharing (2005)
Marc Davis, Nancy Van House, Jeffrey Towle, Simon King, Shane Ahern, Carrie Burgener, ...
Cameraphones are rapidly becoming a global platform for everyday digital imaging especially for networked sharing of media from mobile devices. However, their constrained user interfaces and the...
Toward emergent representations for video (2005)
Advanced systems for finding, using, sharing, and remixing video require high-level representations of video content. A number of researchers have taken top-down, analytic approaches to the...
MMM2: Mobile Media Metadata for Media Sharing (2005)
Marc Davis, John Canny, Nancy Van House, Nathan Good, Simon King, Rahul Nair, ...
As cameraphones become the dominant platform for consumer multimedia capture worldwide, multimedia researchers are faced both with the challenge of how to help users manage the billions of...
PhotoRouter: destination-centric mobile media messaging (2005)
Shane Ahern, Simon King, Hong Qu, Marc Davis
The number of people using cameraphones is growing by tens of millions every month. Yet the majority of cameraphone users have difficulty transferring photos off their phone and sharing them with...
Lin, Lihwai, Koo, David C., Willmer, Christopher N. A., Patton, David R., Conselice, Christopher J., Yan, Renbin, ...
We derive the close, kinematic pair fraction and merger rate up to z ~ 1.2 from the initial data of the DEEP2 Redshift Survey. Assuming a mild luminosity evolution, the number of companions per...
The DEEP2 Galaxy Redshift Survey: First results on galaxy groups (2004)
Gerke, Brian F., Newman, Jeffrey A., Davis, Marc, Marinoni, Christian, Yan, Renbin, Coil, Alison, ...
We use the first 25% of the DEEP2 Galaxy Redshift Survey spectroscopic data to identify groups and clusters of galaxies in redshift space. The data set contains 8370 galaxies with confirmed redshifts...
Conroy, Charlie, Newman, Jeffrey A., Davis, Marc, Coil, Alison L., Yan, Renbin, Cooper, Michael C., ...
Using the first 25% of DEEP2 Redshift Survey data, we probe the line-of-sight velocity dispersion profile for isolated galaxies with absolute B-band magnitude -22
Constraining Dark Energy with DEEP2 (2004)
Davis, Marc, Gerke, Brian F., Newman, Jeffrey A.
The DEEP2 survey has now completed half of its planned three-year lifespan, and we have collected approximately 50% of the data, putting us exactly on schedule. The survey plan calls for...
Coil, Alison L., Newman, Jeffrey A., Kaiser, Nick, Davis, Marc, Ma, Chung-Pei, Kocevski, Dale D., ...
When applied to deep photometric catalogs, the two-point angular correlation function, w(theta), is a sensitive probe of the evolution of galaxy clustering properties. Here we present measurements of...
The Team Keck Treasury Redshift Survey of the GOODS-North Field (2004)
Wirth, Gregory D., Willmer, Christopher N. A., Amico, Paola, Chaffee, Frederic H., Goodrich, Robert W., Kwok, Shui, ...
We report the results of an extensive imaging and spectroscopic survey in the GOODS-North field completed using DEIMOS on the Keck II telescope. Observations of 2018 targets in a magnitude-limited...
Mobile Media Metadata for Mobile Imaging (2004)
Camera phones offer a new platform for digital imaging that integrates capture, programmable processing, networking, and rich user interaction capabilities. This platform can support software that...
Photo annotation on a camera phone (2004)
Anita Wilhelm, Yuri Takhteyev, Risto Sarvas, Nancy Van House, Marc Davis
{awilhelm, yuri, vanhouse, marc} @ sims.berkeley.edu In this paper we describe a system that allows users to annotate digital photos at the time of capture. The system uses camera phones with a...
Video on the Semantic Web Experiences with Media Streams (2004)
H.L. Hardman, M. Davis, Joost Geurts, Jacco Van Ossenbruggen, ...
In this paper, we report our experiences with the use of SemanticWeb technology for annotating digital video material.Web technology is used to transform a large, existing video ontology embedded in...
From Context to Content: Leveraging Context for Mobile Media Metadata (2004)
Marc Davis, Nathan Good, Risto Sarvas
The recent popularity of mobile camera phones allows for new opportunities to gather important metadata at the point of capture. This paper describes and demonstrates a method for generating metadata...
Presiding Over Accidents: System Direction of Human Action," presented at (2004)
Jeffrey Heer, Nathaniel S. Good, Ana Ramirez, Marc Davis, Jennifer Mankoff
“[...] the terrible burden of the director is [...] to select from what happens during the day which movement shall be a disaster and which a gala night. His job is to preside over accidents. ”-...
From context to content: Leveraging context to infer media metadata (2004)
Marc Davis, Simon King, Nathan Good, Risto Sarvas
The recent popularity of mobile camera phones allows for new opportunities to gather important metadata at the point of capture. This paper describes a method for generating metadata for photos using...
Photo annotation on a camera phone (2004)
Anita Wilhelm, Yuri Takhteyev, Risto Sarvas, Nancy Van House, Marc Davis
{awilhelm, yuri, vanhouse, marc} @ sims.berkeley.edu In this paper we describe a system that allows users to annotate digital photos at the time of capture. The system uses camera phones with a...
Presiding Over Accidents: System Direction of Human Action," presented at (2004)
Jeffrey Heer, Nathaniel S. Good, Ana Ramirez, Marc Davis, Jennifer Mankoff
“[...] the terrible burden of the director is [...] to select from what happens during the day which movement shall be a disaster and which a gala night. His job is to preside over accidents. ”-...
The Social Uses of Personal Photography: Methods for Projecting Future Imaging Applications (2004)
Marc Davis, Yuri Takhteyev, Morgan Ames, Megan Finn
An important problem for technology design is predicting users and uses for emerging technologies—doing usercentered design for users and uses that don't yet exist. The primary contribution of...
The DEEP2 Galaxy Redshift Survey: Clustering of Galaxies in Early Data (2003)
Coil, Alison L., Davis, Marc, Madgwick, Darren S., Newman, Jeffrey A., Conselice, Christopher J., Cooper, Michael, ...
We measure the two-point correlation function xi(r) using a sample of 2219 galaxies in an area of 0.32 degrees^2 at z=0.7-1.35 from the first season of the DEEP2 Galaxy Redshift Survey. We find that...
The DEEP2 Galaxy Redshift Survey: Spectral classification of galaxies at z~1 (2003)
Madgwick, Darren S., Coil, Alison L., Conselice, Christopher J., Cooper, Michael C., Davis, Marc, Ellis, Richard S., ...
We present a Principal Component Analysis (PCA)-based spectral classification, eta, for the first 5600 galaxies observed in the DEEP2 Redshift Survey. This parameter provides a very pronounced...
An estimate of \Omega_m without priors (2003)
Feldman, Hume A., Juszkiewicz, Roman, Ferreira, Pedro, Davis, Marc, Gaztanaga, Enrique, Fry, James N., ...
Using mean relative peculiar velocity measurements for pairs of galaxies, we estimate the cosmological density parameter $\Omega_m$ and the amplitude of density fluctuations $\sigma_8$. Our results...
Science Objectives and Early Results of the DEEP2 Redshift Survey (2002)
Davis, Marc, Faber, Sandra M., Newman, Jeffrey A., Phillips, Andrew C., Ellis, R. S., Steidel, C. C., ...
The DEIMOS spectrograph has now been installed on the Keck-II telescope and commissioning is nearly complete. The DEEP2 Redshift Survey, which will take approximately 120 nights at the Keck...
Mendez, Bryan, Davis, Marc, Moustakas, John, Newman, Jeffrey, Madore, Barry F., Freedman, Wendy L.
The properties of the velocity field in the local volume (cz < 550 km/s) have been difficult to constrain due to a lack of a consistent set of galaxy distances. The sparse observations available to...
Unusual Broad Absorption Line Quasars from the Sloan Digital Sky Survey (2002)
Hall, Patrick B., Anderson, Scott F., Strauss, Michael A., York, Donald G., Richards, Gordon T., Fan, Xiaohui, ...
Marinoni, Christian, Davis, Marc, Newman, Jeffrey A., Coil, Alison L.
We have developed a new geometrical method for identifying and reconstructing a homogeneous and highly complete set of galaxy groups in the next generation of deep, flux-limited redshift surveys. Our...
Chandra Detection of a TypeII Quasar at z=3.288 (2001)
Stern, Daniel, Moran, Edward C., Coil, Alison L., Connolly, Andrew, Davis, Marc, Dawson, Steve, ...
We report on observations of a TypeII quasar at redshift z=3.288, identified as a hard X-ray source in a 185 ks observation with the Chandra X-ray Observatory and as a high-redshift photometric...
3D Identification and Reconstruction of z~1 Clusters: Prospects for the DEEP2 Redshift Survey (2001)
Marinoni, Christian, Davis, Marc, Newman, Jeffrey A., Coil, Alison L.
We have developed a geometrical method based on 3D Voronoi polyhedra and Delaunay tessellation for identifying and reconstructing clusters of galaxies in the next generation of deep, flux-limited...
Spectral Reduction Software for the DEEP2 Redshift Survey (2001)
Marinoni, Christian, Davis, Marc, Coil, Alison L., Finkbeiner, Douglas
The DEEP2/DEIMOS redshift survey, which will begin observing in the Spring of 2002, will gather high quality spectra on ~60000 galaxies in order to study the evolution of the properties and large...
Newman, Jeffrey A., Davis, Marc
In a previous paper, we described a new variant on the classical dN/dz test which could be performed using upcoming redshift surveys. By observing the velocity function of galaxies rather than their...
Measuring the Cosmic Equation of State with Galaxy Clusters in the DEEP2 Redshift Survey (2001)
Newman, Jeffrey A., Marinoni, Christian, Coil, Alison L., Davis, Marc
The abundances of groups and clusters of galaxies are expected to have changed substantially since high redshift, with the strength of this evolution dependent upon fundamental cosmological...
Galaxy Correlation Statistics of Mock Catalogs for the DEEP2 Survey (2001)
Coil, Alison L., Davis, Marc, Szapudi, Istvan
The DEEP2 project will obtain redshifts for ~60,000 galaxies between z~0.7-1.5 in a comoving volume of 7 10^6 Mpc/h^3 for an LCDM universe. The survey will map four separate 2 by 0.5 degree strips of...
The Structure of Dark Matter Halos in an Annihilating Dark Matter Model (2001)
Craig, Matthew W., Davis, Marc
The inability of standard non-interacting cold dark matter (CDM) to account for the small scale structure of individual galaxies has led to the suggestion that the dark matter may undergo elastic...
Moran, Edward C., Kay, Laura E., Davis, Marc, Filippenko, Alexei V., Barth, Aaron J.
We present a composite 1-10 keV Seyfert 2 X-ray spectrum, derived from ASCA observations of a distance-limited sample of nearby galaxies. All 29 observed objects were detected. Above ~3 keV, the...
Mining the Sky with Redshift Surveys (2001)
Since the late 1970's, redshift surveys have been vital for progress in understanding large-scale structure in the Universe. The original CfA redshift survey collected spectra of 20-30 galaxies per...
A revised Cepheid distance to NGC 4258 and a test of the distance scale (2000)
Newman, Jeffrey A., Ferrarese, Laura, Stetson, Peter B., Maoz, Eyal, Zepf, Stephen E., Davis, Marc, ...
In a previous paper (Maoz et al. 1999), we reported a Hubble Space Telescope (HST) Cepheid distance to the galaxy NGC 4258 obtained using the calibrations and methods then standard for the Key...
The DEEP2 Redshift Survey (2000)
Davis, Marc, Newman, Jeffrey, Faber, Sandra, Phillips, Andrew
The DEIMOS spectrograph is nearing completion in the UC Lick shops and will be delivered to the Keck Observatory in 2001. Once it is operational, a team of astronomers will initiate DEEP2, a major...
High-Redshift Galaxy Outflows and the Formation of Dwarf Galaxies (2000)
Scannapieco, Evan, Thacker, Robert J., Davis, Marc
We examine the effects of galaxy outflows on the formation of dwarf galaxies in numerical simulations of the high-redshift Universe. Using a Smoothed Particle Hydrodynamic code, we conduct two...
Stellar Populations and Galaxy Morphology at High Redshift (2000)
Bunker, Andrew, Spinrad, Hyron, Stern, Daniel, Thompson, Rodger, Moustakas, Leonidas, Davis, Marc, ...
In this article we investigate the morphology and stellar populations of high-redshift galaxies through multi-waveband HST imaging and ground-based spatially-resolved spectroscopy. We study the...
Detection of a Far IR Excess with DIRBE at 60 and 100 Microns (2000)
Finkbeiner, Douglas P., Davis, Marc, Schlegel, David J.
From analysis of the DIRBE weekly averaged sky maps, we have detected substantial flux in the 60 and 100 micron channels in excess of expected zodiacal and Galactic emission. Two methods are used to...
Measuring the Cosmic Equation of State with Counts of Galaxies (1999)
Newman, Jeffrey A., Davis, Marc
The classical dN/dz test allows the determination of fundamental cosmological parameters from the evolution of the cosmic volume element. This test is applied by measuring the redshift distribution...
Resolving the Stellar Populations in a z=4 Lensed Galaxy (1999)
Bunker, Andrew J., Moustakas, Leonidas A., Davis, Marc
We present deep near-infrared Keck/NIRC imaging of a recently-discovered z=4.04 galaxy (Frye & Broadhurst 1998). This is lensed by the rich foreground cluster Abell~2390 (z~0.23) into...
A New Object-Weighted Measure of the Small-Scale Velocity Dispersion (1999)
Baker, Jonathan E., Davis, Marc
We describe a new statistic for measuring the small-scale velocity dispersion of galaxies directly from redshift surveys. This statistic is based on the object-weighted statistic proposed by Davis,...
The Galaxy-Weighted Small-Scale Velocity Dispersion of the Las Campanas Redshift Survey (1999)
Baker, Jonathan E., Davis, Marc, Lin, Huan
The pair-weighted relative velocity dispersion of galaxies provides a measure of the thermal energy of fluctuations of the observed galaxy distribution, but the measure is difficult to interpret and...
A Cepheid distance to NGC 4258 (1999)
Maoz, Eyal, Newman, Jeffrey A., Ferrarese, Laura, Stetson, Peter B., Zepf, Stephen E., Davis, Marc, ...
Distances measured using Cepheid variable stars have been essential for establishing the cosmological distance scale and the value of the Hubble constant. These stars have remained the primary...
Extrapolation of Galactic Dust Emission at 100 Microns to CMBR Frequencies Using FIRAS (1999)
Finkbeiner, Douglas P., Davis, Marc, Schlegel, David J.
We present predicted full-sky maps of submillimeter and microwave emission from the diffuse interstellar dust in the Galaxy. These maps are extrapolated from the 100 micron emission and 100/240...
A Cepheid Distance to NGC 4603 in Centaurus (1999)
Newman, Jeffrey A., Zepf, Stephen E., Davis, Marc, Freedman, Wendy L., Madore, Barry F., Stetson, Peter B., ...
In an attempt to use Cepheid variables to determine the distance to the Centaurus cluster, we have obtained images of NGC 4603 with the Hubble Space Telescope on 9 epochs using WFPC2 and the F555W...
WOMBAT & FORECAST: Making Realistic Maps of the Microwave Sky (1999)
Jaffe, Andrew H., Gawiser, Eric, Finkbeiner, Douglas, Baker, Joanne C., Balbi, Amedeo, Davis, Marc, ...
The Wavelength-Oriented Microwave Background Analysis Team (WOMBAT) is constructing microwave maps which will be more realistic than previous simulations. Our foreground models represent a...
A Brief Overview of the Narrative Intelligence Reading Group (1999)
Group In, Narrative Intelligence, Michael Mateas, Phoebe Sengers Amsterdam, Marc Davis, Marc Davis, ...
In the fall of 1990 at the MIT Media Laboratory, we started a weekly, student-run reading group to explore topics
The WOMBAT Challenge: A "Hounds and Hares" Exercise for Cosmology (1998)
Gawiser, Eric, Finkbeiner, Douglas, Jaffe, Andrew, Baker, Joanne C., Balbi, Amedeo, Davis, Marc, ...
The Wavelength-Oriented Microwave Background Analysis Team (WOMBAT) is constructing microwave skymaps which will be more realistic than previous simulations. Our foreground models represent a...
The Deimos Spectrograph and a Planned DEEP Redshift Survey (1998)
A second generation spectrograph for the Keck telescope is under construction at the Lick Observatory shops and will be delivered to Hawaii in 1999. Starting in the Fall of 1999, we shall begin the...
The Velocity Field Predicted by the Optical Redshift Survey (1998)
Baker, Jonathan E., Davis, Marc, Strauss, Michael A., Lahav, Ofer, Santiago, Basilio X.
We have used the Optical Redshift Survey (ORS; Santiago et al. 1995) to construct the gravity field due to fluctuations in the galaxy density field out to distances of 8000 km/s. At large scales...
Theoretical Foundations for Experiential Systems Design (1998)
As multimedia researchers analyze and design “experiential systems ’ there is a pressing need to place that work on a solid theoretical foundation. Without careful analysis of the objects and...
Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds (1998)
Cmbr Foregrounds, David J. Schlegel, Douglas P. Finkbeiner, Marc Davis
We present a full sky 100¯m map that is a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed. Before using the ISSA maps, we...
Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds (1997)
Schlegel, David J., Finkbeiner, Douglas P., Davis, Marc
We present a full sky 100 micron map that is a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed. Before using the ISSA...
The Velocity Field from Type Ia Supernovae Matches the Gravity Field from Galaxy Surveys (1997)
Riess, Adam G., Davis, Marc, Baker, Jonathan, Kirshner, Robert P.
We compare the peculiar velocities of nearby SNe Ia with those predicted by the gravity fields of full sky galaxy catalogs. The method provides a powerful test of the gravitational instability...
A Galaxy-Weighted Measure of the Relative Peculiar Velocity Dispersion (1997)
Davis, Marc, Miller, Amber, White, Simon D. M.
The relative pair dispersion of galaxies has for the past decade been the standard measure of the thermal energy of fluctuations in the observed galaxy distribution. This statistic is known to be...
An estimate of H_0 from Keck spectroscopy of the gravitational lens system 0957+561 (1997)
Falco, Emilio E., Shapiro, Irwin I., Moustakas, Leonidas A., Davis, Marc
We present long-slit LRIS/Keck spectroscopic observations of the gravitational lens system 0957+561. Averaged over all of our data, the rest-frame velocity dispersion sigma_v of the central lens...
Is the Universe Homogeneous on Large Scales? (1997)
Introduction This morning's debate is focused on the question of the large-scale homogeneity of the Universe. I shall present the affirmative position, that there is overwhelming evidence for...
Is the Universe Homogeneous on Large Scales? (1996)
This contribution is the affirmative side of a debate held with Dr. L. Pietronero at Princeton in June, 1996. I present the observational evidence that the fractal behavior which characterizes the...
Colors and K-Band Counts of Extremely Faint Field Galaxies (1996)
Moustakas, Leonidas A., Davis, Marc, Graham, James R., Silk, Joseph, Peterson, B. A., Yoshii, Y.
We combine deep K-band (Keck) with V- and I-band (NTT) observations of two high-Galactic latitude fields, surveying a total of ~2 sq. arcmin. The K-band galaxy counts continue to rise above K=22,...
Hermit, Sune, Santiago, Basilio X., Lahav, Ofer, Strauss, Michael A., Davis, Marc, Dressler, Alan, ...
We study the clustering of galaxies in real and redshift space using the Optical Redshift Survey (ORS). We estimate the two point correlation function in redshift space, $\xi(s)$, for several...
Keck Spectroscopy of Objects with Lens-like Morphologies in the Hubble Deep Field (1996)
Zepf, Stephen E., Moustakas, Leonidas A., Davis, Marc
We present spectroscopy from the Keck telescope of three sets of objects in the Hubble Deep Field which have lens-like morphologies. In the case of J123641+621204, which is composed of four objects...
Redshift z ~ 1 Field Galaxies Observed with the Keck Telescope and the HST (1996)
Koo, David C., Vogt, Nicole P., Phillips, Andrew C., Guzman, Rafael, Wu, K. L., Faber, S. M., ...
We report results based on 35 new spectroscopic redshifts obtained with the Keck Telescope for field galaxies that also have photometry and morphology from survey images taken by the refurbished HST....
Davis, Marc, Nusser, Adi, Willick, Jeff
We consider a measure of the peculiar velocity field derived from the Mark III compilation of 2900 spiral galaxies (Willick \etal 1996b), using an analysis that is substantially free of bias (Nusser...
A Reanalysis of Small Scale Velocity Dispersion in the CfA1 Survey (1996)
Somerville, Rachel S., Davis, Marc, Primack, Joel R.
The velocity dispersion of galaxies on scales of $r\sim1h^{-1}$ Mpc, $\sigma_{12}(r)$, may be estimated from the anisotropy of the galaxy-galaxy correlation function in redshift space. We present a...
Redshift z~1 field galaxies observed with the Keck Telescope and the Hubble Space Telescope (1996)
Koo, David C., Vogt, Nicole P., Phillips, Andrew C., Guzman, Rafael, Wu, K. L., Faber, S. M., ...
We report results based on 35 new spectroscopic redshifts obtained with the Keck Telescope for field galaxies that also have photometry and morphology from survey images taken by the refurbished...
Redshift z~1 field galaxies observed with the Keck Telescope and the Hubble Space Telescope (1996)
Koo, David C., Vogt, Nicole P., Phillips, Andrew C., Guzman, Rafael, Wu, K. L., Faber, S. M., ...
We report results based on 35 new spectroscopic redshifts obtained with the Keck Telescope for field galaxies that also have photometry and morphology from survey images taken by the refurbished...
Santiago, Basilio X., Strauss, Michael A., Lahav, Ofer, Davis, Marc, Dressler, Alan, Huchra, John
We quantify the effects of Galactic extinction on the derived luminosity and diameter functions and on the density field of a redshift sample. Galaxy magnitudes are more affected by extinction than...
Cold Dark Matter Resuscitated? (1995)
White, Martin, Scott, Douglas, Silk, Joe, Davis, Marc
The Cold Dark Matter (CDM) model has an elegant simplicitly which makes it very predictive, but when its parameters are fixed at their `canonical' values its predictions are in conflict with...
Galaxy Tracers and Velocity Bias (1995)
Summers, F J, Davis, Marc, Evrard, August E.
This paper examines several methods of tracing galaxies in N-body simulations and their effects on the derived galaxy statistics, especially measurements of velocity bias. Using two simulations with...
The IRAS 1.2 Jy Survey: Redshift Data (1995)
Fisher, Karl, Huchra, John, Strauss, Michael, Davis, Marc, Yahil, Amos, Schlegel, David
We present the redshift data for a survey of galaxies selected from the data base of the Infrared Astronomical Satellite (IRAS). This survey extends the 1.936 Jy sample of Strauss et al. (1992) from...
INDICATIONS OF DARK MATTER DERIVED FROM LARGE SCALE FLOWS (1995)
Recent progress in the measurement of relative distances to galaxies has been quite substantial, and catalogs of 3000 galaxies with distances are soon to become available. The peculiar {\it velocity}...
Estimation of Peculiar Velocity from the Inverse Tully-Fisher Relation (1994)
We present a method for deriving a smoothed estimate of the peculiar velocity field of a set of galaxies with measured circular velocities $\eta\equiv {\rm log} \Delta v$ and apparent magnitudes $m$....
The Origin of the Magellanic Stream (1994)
SHORTENED ABSTRACT: We present numerical investigations designed to critically test models of the origin of the Magellanic Stream. The most developed model is the tidal model which fails to reproduce...
IDIC: assembling video sequences from story plans and content annotations (1994)
Abstract § We describe a system, IDIC, which can generate a video sequence according to a story plan by selecting appropriate segments from an archive of annotated video. IDIC uses a simple planner...
How Unusual is the Locally Quiet Hubble Flow? (1993)
Schlegel, David, Davis, Marc, Summers, Frank, Holtzman, Jon A.
The local galaxy distribution offers an interesting constraint to cosmological models of structure formation. The galaxies are distributed in a long, filamentary structure, presumably the result of...
On the Prediction of Velocity Fields from Redshift Space Galaxy Samples (1993)
We present a new method for recovering the underlying velocity field from an observed distribution of galaxies in redshift space. The method is based on a kinematic Zel'dovich relation between the...
Fisher, Karl B, Davis, Marc, Strauss, Michael A, Yahil, Amos, Huchra, John P
We examine the effect of redshift space distortions on the galaxy two-point correlation function $\xi(r_p,\pi)$ as a function of separations parallel ($r_p$) and perpendicular ($\pi$) to the line of...
Fisher, Karl B., Davis, Marc, Strauss, Michael A., Yahil, Amos, Huchra, John
We present analyses of the two-point correlation function derived from an all-sky redshift survey of 5313 galaxies extracted from the Infrared Astronomical Satellite (IRAS) database. The redshift...
Typescript
Lenat: Knowledge-Based Systems (1982)
The Active Capture demonstration is part of a new computational media production paradigm that transforms media production from a manual mechanical process into an automated computational one that...
Mass loss from very luminous stars. (1969)
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1969. B.S.
Garage Cinema and the Future of Media Technology. (0000)
Although people are living in the "Computer Age" the full implications of computational ideas have not been realized in this century. People are at the early apparatus phase of computational...
Cosmic velocity fields and their interpretation
We review the current status of our knowledge of cosmic velocity fields, on both small and large scales. A new statistic is described that characterizes the incoherent, thermal component of the...
Cosmic velocity fields and their interpretation
We review the current status of our knowledge of cosmic velocity fields, on both small and large scales. A new statistic is described that characterizes the incoherent, thermal component of the...
Garage Cinema and the Future of Media Technology.
Although people are living in the "Computer Age" the full implications of computational ideas have not been realized in this century. People are at the early apparatus phase of computational...
From Keck Spectroscopy, Emilio E. Falco, Irwin I. Shapiro, Leonidas A. Moustakas, Marc Davis
We present long-slit LRIS/Keck spectroscopic observations of the gravitational lens system 0957 + 561. Averaged over all of our data, the rest-frame velocity dispersion oe v of the central lens...