Modeling and Correcting the Time-Dependent ACS PSF (2009)
A. M. Koekemoer, P. Goudfrooij, L. L. Dressel, Jason Rhodes, Richard Massey, Justin Albert, ...
Abstract. The ability to accurately measure the shapes of faint objects in images taken with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST) depends upon detailed knowledge...
The Chandra COSMOS Survey. I. Overview and Point Source Catalog (2009)
Elvis, Martin, Civano, Francesca, Vignali, Cristian, Puccetti, Simonetta, Fiore, Fabrizio, Cappelluti, Nico, ...
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra program that has imaged the central 0.5 deg^2 of the COSMOS field (centered at 10 ^h , +02 ^o ) with an effective exposure of ~160 ks,...
The Chandra COSMOS Survey, I: Overview and Point Source Catalog (2009)
Elvis, Martin, Civano, Francesca, Vignali, Cristian, Puccetti, Simonetta, Fiore, Fabrizio, Cappelluti, Nico, ...
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra} program that has imaged the central 0.5 sq.deg of the COSMOS field (centered at 10h, +02deg) with an effective exposure of ~160ksec,...
Strong gravitational lensing probes of the particle nature of dark matter (2009)
Moustakas, Leonidas A., Abazajian, Kevork, Benson, Andrew, Bolton, Adam S., Bullock, James S., Chen, Jacqueline, ...
There is a vast menagerie of plausible candidates for the constituents of dark matter, both within and beyond extensions of the Standard Model of particle physics. Each of these candidates may have...
The Chandra COSMOS survey - I. Overview and point source catalog (2009)
Elvis, Martin, Civano, Francesca, Vignali, Christian, Puccetti, Simonetta, Fiore, Fabrizio, Cappelluti, Nico, ...
On the Origin of the 511 keV Emission in the Galactic Centre (2008)
Bandyopadhyay, Reba M., Silk, Joseph, Taylor, James E., Maccarone, Thomas J.
Diffuse 511 keV line emission, from the annihilation of cold positrons, has been observed in the direction of the Galactic Centre for more than 30 years. The latest high-resolution maps of this...
Subaru Weak Lensing survey -- II: Multi-object Spectroscopy and Cluster Masses (2008)
Hamana, Takashi, Miyazaki, Satoshi, Kashikawa, Nobunari, Ellis, Richard S., Massey, Richard J., Refregier, Alexandre, ...
We present the first results of a MOS campaign to follow up cluster candidates located via weak lensing. Our main goals are to search for spatial concentrations of galaxies that are plausible optical...
Connecting Substructure in Galaxy Cluster Cores at z = 0.2 with Cluster Assembly Histories (2008)
Smith, Graham P., Taylor, James E.
We use semianalytic models of structure formation to interpret gravitational lensing measurements of substructure in galaxy cluster cores (R ≤ 250 h^(−1) kpc) at z = 0.2. The dynamic range of the...
Smith, Graham P., Taylor, James E.
We use semi-analytic models of structure formation to interpret gravitational lensing measurements of substructure in galaxy cluster cores (R10% mass growth in the ~500Myr preceding z=0.2, i.e. since...
The orbital distribution of satellite galaxies (2008)
Herbert-Fort, Stephane, Zaritsky, Dennis, Jin Kim, Yeun, Bailin, Jeremy, Taylor, James E.
We measure the distribution of velocities for prograde and retrograde satellite galaxies using a combination of published data and new observations for 78 satellites of 63 extremely isolated disc...
The orbital distribution of satellite galaxies (2008)
Herbert-Fort, Stephane, Zaritsky, Dennis, Jin Kim, Yeun, Bailin, Jeremy, Taylor, James E.
We measure the distribution of velocities for prograde and retrograde satellite galaxies using a combination of published data and new observations for 78 satellites of 63 extremely isolated disc...
The orbital distribution of satellite galaxies (2008)
Herbert-Fort, Stephane, Zaritsky, Dennis, Jin Kim, Yeun, Bailin, Jeremy, Taylor, James E.
We measure the distribution of velocities for prograde and retrograde satellite galaxies using a combination of published data and new observations for 78 satellites of 63 extremely isolated disc...
The orbital distribution of satellite galaxies (2008)
Herbert-Fort, Stephane, Zaritsky, Dennis, Jin Kim, Yeun, Bailin, Jeremy, Taylor, James E.
We measure the distribution of velocities for prograde and retrograde satellite galaxies using a combination of published data and new observations for 78 satellites of 63 extremely isolated disc...
The orbital distribution of satellite galaxies (2008)
Herbert-Fort, Stephane, Zaritsky, Dennis, Jin Kim, Yeun, Bailin, Jeremy, Taylor, James E.
We measure the distribution of velocities for prograde and retrograde satellite galaxies using a combination of published data and new observations for 78 satellites of 63 extremely isolated disc...
The Orbital Distribution of Satellite Galaxies (2007)
Herbert-Fort, Stéphane, Zaritsky, Dennis, Kim, Yeun Jin, Bailin, Jeremy, Taylor, James E.
We measure the distribution of velocities for prograde and retrograde satellite galaxies using a combination of published data and new observations for 78 satellites of 63 extremely isolated disc...
COSMOS: 3D weak lensing and the growth of structure (2007)
Massey, Richard, Rhodes, Jason, Leauthaud, Alexie, Capak, Peter, Ellis, Richard, Koekemoer, Anton, ...
We present a three dimensional cosmic shear analysis of the Hubble Space Telescope COSMOS survey, the largest ever optical imaging program performed in space. We have measured the shapes of galaxies...
Rhodes, Jason D., Massey, Richard, Albert, Justin, Collins, Nicholas, Ellis, Richard S., Heymans, Catherine, ...
(abridged) We examine the spatial and temporal stability of the HST ACS Wide Field Camera (WFC) point spread function (PSF) using the two square degree COSMOS survey. We show that stochastic aliasing...
Rhodes, Jason D., Massey, Richard, Albert, Justin, Collins, Nicholas, Ellis, Richard S., Heymans, Catherine, ...
(abridged) We examine the spatial and temporal stability of the HST ACS Wide Field Camera (WFC) point spread function (PSF) using the two square degree COSMOS survey. We show that stochastic aliasing...
COSMOS: 3D weak lensing and the growth of structure (2007)
Massey, Richard, Rhodes, Jason, Leauthaud, Alexie, Capak, Peter, Ellis, Richard, Koekemoer, Anton, ...
We present a three dimensional cosmic shear analysis of the Hubble Space Telescope COSMOS survey, the largest ever optical imaging program performed in space. We have measured the shapes of galaxies...
Tidal Disruption of the First Dark Microhalos (2007)
Zhao, HongSheng, Hooper, Dan, Angus, Garry W., Taylor, James E., Silk, Joseph
We point out that the usual self-similarity in cold dark matter models is broken by encounters with individual normal galactic stars on a subparsec scale. Tidal heating and stripping must have...
Rotation of galaxy dark matter halos (2007)
Herbert-Fort, Stéphane, Zaritsky, Dennis, Kim, Yeun Jin, Bailin, Jeremy, Taylor, James E.
The degree to which outer dark matter halos of spiral galaxies rotate with the disk is sensitive to their accretion history and may be probed with associated satellite galaxies. We use the Steward...
Rotation of galaxy dark matter halos (2007)
Herbert-Fort, Stéphane, Zaritsky, Dennis, Kim, Yeun Jin, Bailin, Jeremy, Taylor, James E.
The degree to which outer dark matter halos of spiral galaxies rotate with the disk is sensitive to their accretion history and may be probed with associated satellite galaxies. We use the Steward...
Rotation of galaxy dark matter halos (2007)
Herbert-Fort, Stéphane, Zaritsky, Dennis, Kim, Yeun Jin, Bailin, Jeremy, Taylor, James E.
The degree to which outer dark matter halos of spiral galaxies rotate with the disk is sensitive to their accretion history and may be probed with associated satellite galaxies. We use the Steward...
Can Astrophysical Gamma Ray Sources Mimic Dark Matter Annihilation in Galactic Satellites? (2006)
Baltz, Edward A., Taylor, James E., Wai, Lawrence L.
The nature of the cosmic dark matter is unknown. The most compelling hypothesis is that dark matter consists of weakly interacting massive particles (WIMPs) in the 100 GeV mass range. Such particles...
Astrometric Perturbations in Substructure Lensing (2006)
Chen, Jacqueline, Rozo, Eduardo, Dalal, Neal, Taylor, James E.
In recent years, gravitational lensing has been used as a means to detect substructure in galaxy-sized halos, via anomalous flux ratios in quadruply-imaged lenses. In addition to causing anomalous...
Bundy, Kevin, Ellis, Richard S., Conselice, Christopher J., Taylor, James E., Cooper, Michael C., Willmer, Christopher N. A., ...
We characterize the mass-dependent evolution in a large sample of more than 8,000 galaxies using spectroscopic redshifts drawn from the DEEP2 Galaxy Redshift Survey in the range 0.4 < z < 1.4 and...
Modelling and Correcting the Time-Dependent ACS PSF (2005)
Rhodes, Jason, Massey, Richard, Albert, Justin, Taylor, James E., Koekemoer, Anton, Leauthaud, Alexie
The ability to accurately measure the shapes of faint objects in images taken with the Advanced Camera for Surveys(ACS) on the Hubble Space Telescope (HST) depends upon detailed knowledge of the...
Tidal Destruction of The First Dark Microhalos (2005)
Zhao, HongSheng, Hooper, Dan, Angus, Garry W., Taylor, James E., Silk, Joseph
We point out that the usual self-similarity in cold dark matter models is broken by encounters with individual normal galactic stars on sub-pc scale. Tidal heating and stripping must have redefined...
Earth-mass dark halos are torn into dark mini-streams by stars (2005)
Zhao, HongSheng, Taylor, James E., Silk, Joseph, Hooper, Dan
The promising neutralino dark matter particles generically condense into numerous earth-mass dark halos with smaller substructures suppressed by free streaming\cite{berezinsky}. The recent {\it...
Substructure and Tidal Debris in Local Galaxies: Models and Observations (2004)
One of the generic predictions of modern cosmological models is that large galaxies should have experienced many mergers with smaller galaxies at some point in their past. Debris from such encounters...
The Evolution of Substructure in Galaxy, Group and Cluster Haloes II: Global Properties (2004)
In a previous paper, we described a new method for including detailed information about substructure in semi-analytic models of dark matter halo formation based on merger trees. In this paper, we...
In a previous paper, we described a new method for including detailed information about substructure in semi-analytic models of halo formation based on merger trees. In this paper, we compare the...
Predicting Substructure in CDM Haloes (2004)
Observations of multiple-image gravitational lens systems suggest that the projected mass distributions of galaxy haloes may contain substantial inhomogeneities. The fraction of the halo mass in...
Dissertation (Ph.D.)--University of Michigan.
Can Supersymmetry Naturally Explain the Positron Excess? (2003)
Hooper, Dan, Taylor, James E., Silk, Joseph
It has often been suggested that the cosmic positron excess observed by the HEAT experiment could be the consequence of supersymmetric dark matter annihilating in the galactic halo. Although it is...
Small-scale Substructure in Dark Matter Haloes: Where Does Galaxy Formation Come to an End? (2003)
Taylor, James E., Silk, Joseph, Babul, Arif
Models of structure formation based on cold dark matter predict that most of the small dark matter haloes that first formed at high redshift would have merged into larger systems by the present...
The Satellite-substructure Connection (2003)
Taylor, James E., Babul, Arif, Silk, Joseph
We describe our recent attempts to model substructure in dark matter halos down to very small masses, using a semi-analytic model of halo formation. The results suggest that numerical simulations of...
Islam, Ranty R., Taylor, James E., Silk, Joseph
The first stars forming in minihaloes at redshifts greater than 20 may have been very massive and could have left behind massive black hole (MBH) remnants. In a previous paper we investigated the...
Massive black hole remnants of the first stars III: observational signatures from the past (2003)
Islam, Ranty R., Taylor, James E., Silk, Joseph
The first stars forming in minihaloes at redshifts greater than 20 may have been very massive and could have left behind massive black hole (MBH) remnants. In previous papers we investigated the...
Massive black hole remnants of the first stars I: abundance in present-day galactic haloes (2003)
Islam, Ranty R., Taylor, James E., Silk, Joseph
We investigate the possibility that present-day galaxies and their dark matter haloes contain a population of massive black holes (MBHs) that form by hierarchical merging of the black hole remnants...
Observing the Sunyaev-Zel'dovich Effect Closer to Home (2003)
Taylor, James E., Moodley, Kavilan, Diego, J. M.
Hot gas trapped in a dark matter halo will produce a decrement in the surface brightness of the microwave background, the Sunyaev-Zel'dovich (SZ) effect. While massive clusters produce the strongest...
The Evolution of Substructure in Galaxy, Group and Cluster Haloes I: Basic Dynamics (2003)
The hierarchical mergers that form the haloes of dark matter surrounding galaxies, groups and clusters are not entirely efficient, leaving substantial amounts of dense substructure, in the form of...
Modelling the Formation of Individual Galaxies: A Morphology Problem for CDM? (2002)
We use a semi-analytic model of halo formation to study the dynamical history of giant field galaxies like the Milky Way. We find that in a concordance LCDM cosmology, most isolated disk galaxies...
Massive black hole remnants of the first stars in galactic haloes (2002)
Islam, Ranty R., Taylor, James E., Silk, Joseph
We investigate the possibility that present-day galactic haloes contain a population of massive black holes (MBHs) that form by hierarchical merging of the black hole remnants of the first stars....
The Clumpiness of Cold Dark Matter: Implications for the Annihilation Signal (2002)
Taylor, James E., Silk, Joseph
We examine the expected signal from annihilation events in realistic cold dark matter halos. If the WIMP is a neutralino, with an annihilation cross-section predicted in minimal SUSY models for the...
The Structural Evolution of Substructure (2002)
Hayashi, Eric, Navarro, Julio F., Taylor, James E., Stadel, Joachim, Quinn, Thomas
We investigate the evolution of substructure in cold dark matter halos using N-body simulations of tidal stripping of substructure halos (subhalos) within a static host potential. We find that halos...
A Semi-analytic Model of Halo Dynamics (2002)
We have developed a new semi-analytic model for the formation and evolution of structure on galaxy, group and cluster scales. The model combines merger trees with a detailed, spatially resolved...
Contact Deformation in Gage Block Comparisons. (2002)
Beers ,John S., Taylor,James E.
When calibrating gage blocks or when gaging objects with contact type comparators, local deformation occurs where the probe tip contacts the gaging surface. This deformation results in a measurement...
The Phase-Space Density Profiles of Cold Dark Matter Halos (2001)
Taylor, James E., Navarro, Julio F.
We examine the coarse-grained phase-space density profiles of a set of recent, high-resolution simulations of galaxy-sized Cold Dark Matter (CDM) halos. Over two and a half decades in radius the...
The National Guard Bureau, following the publication of the Defense Against Weapons of Mass Destruction Act of 1996, and the 1998 Department of Defense Plan for Integrating National Guard and Reserve...
In the summer of 1989, following the breakup of the Soviet Union and the ending of the Cold War, the Department of Defense announced plans to modify the structure and size of the armed forces based...
In the summer of 1989, following the breakup of the Soviet Union and the ending of the Cold War, the Department of Defense announced plans to modify the structure and size of the armed forces based...
The National Guard Bureau, following the publication of the Defense Against Weapons of Mass Destruction Act of 1996, and the 1998 Department of Defense Plan for Integrating National Guard and Reserve...
Tempests in a teacup--[microform] :--the University of Waterloo in the sixties. (1993)
University Microfilms order no. UMI00419905.
Typescript.