A Pilot Search for Population III Supernova Candidates in the Spitzer/IRAC Dark Field (2009)
Frost, Mark I., Surace, Jason, Moustakas, Leonidas A., Krick, Jessica
We have undertaken a systematic search for candidate supernovae from high-redshift Population III stars in a field that has been observed with repeated imaging on a cadence of 2-3 weeks over a 2.2...
A Pilot Search for Population III Supernova Candidates in the Spitzer/IRAC Dark Field (2009)
Frost, Mark I, Surace, Jason, Moustakas, Leonidas A, Krick, Jessica
We have undertaken a systematic search for candidate supernovae from high-redshift Population III stars in a field that has been observed with repeated imaging on a cadence of 2-3 weeks over a 2.2...
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 Cosmic Evolution of AGN in galaxy clusters (2009)
Galametz, Audrey, Stern, Daniel, Eisenhardt, Peter R. M., Brodwin, Mark, Brown, Michael J. I., Dey, Arjun, ...
We present the surface density of luminous active galactic nuclei (AGN) associated with a uniformly selected galaxy cluster sample identified in the 8.5 square degree Bootes field of the NOAO Deep...
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 Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) (2008)
Moustakas, Leonidas A, Bolton, Adam J, Booth, Jeffrey T, Bullock, James S, Cheng, Edward, Coe, Dan, ...
(abridged) The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) is a mission concept for a 1.5-m near-UV through near-IR space observatory that will be dedicated to frequent...
Bolton, Adam S., Burles, Scott, Koopmans, Léon V. E., Treu, Tommaso, Moustakas, Leonidas A.
The Sloan Lens ACS (SLACS) Survey is an efficient Hubble Space Telescope (HST) Snapshot imaging survey for new galaxy-scale strong gravitational lenses. The targeted lens candidates are selected...
The Sloan Lens ACS Survey. V. The Full ACS Strong-Lens Sample (2008)
Bolton, Adam S., Burles, Scott, Koopmans, Leon V. E., Treu, Tommaso, Gavazzi, Raphael, Moustakas, Leonidas A., ...
We present the definitive data for the full sample of 131 strong gravitational lens candidates observed with the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope by the Sloan Lens...
Bolton, Adam S., Treu, Tommaso, Koopmans, Leon V. E., Gavazzi, Raphael, Moustakas, Leonidas A., Burles, Scott, ...
We use a sample of 53 massive early-type strong gravitational lens galaxies with well-measured redshifts (ranging from z=0.06 to 0.36) and stellar velocity dispersions (between 175 and 400 km/s) from...
Automated detection of galaxy-scale gravitational lenses in high resolution imaging data (2008)
Marshall, Philip J., Hogg, David W., Moustakas, Leonidas A., Fassnacht, Christopher D., Bradac, Marusa, Schrabback, Tim, ...
Lens modeling is the key to successful and meaningful automated strong galaxy-scale gravitational lens detection. We have implemented a lens-modeling "robot" that treats every bright red galaxy (BRG)...
A Large Population of High Redshift Galaxy Clusters in the IRAC Shallow Cluster Survey (2008)
Brodwin, Mark, Eisenhardt, Peter R., Gonzalez, Anthony H., Stanford, Adam, Stern, Daniel, Moustakas, Leonidas A., ...
We have identified 335 galaxy cluster and group candidates spanning 01, a wider range of formation histories is needed, but higher formation redshifts (i.e. z_f \ge 4-5) are favored for most...
Keeton, Charles R., Moustakas, Leonidas A.
We show that dark matter substructure in galaxy-scale halos perturbs the time delays between images in strong gravitational lens systems. The variance of the effect depends on the subhalo mass...
Clusters of Galaxies in the First Half of the Universe from the IRAC Shallow Survey (2008)
Eisenhardt, Peter R. M., Brodwin, Mark, Gonzalez, Anthony H., Stanford, S. Adam, Stern, Daniel, Barmby, Pauline, ...
We have identified 335 galaxy cluster and group candidates, 106 of which are at z > 1, using a 4.5 um selected sample of objects from a 7.25 deg^2 region in the Spitzer Infrared Array Camera (IRAC)...
The Sloan Lens ACS Survey. VI: Discovery and analysis of a double Einstein ring (2008)
Gavazzi, Raphael, Treu, Tommaso, Koopmans, Leon V. E., Bolton, Adam S., Moustakas, Leonidas A., Burles, Scott, ...
We report the discovery of two concentric Einstein rings around the gravitational lens SDSSJ0946+1006, as part of the Sloan Lens ACS Survey. The main lens is at redshift zl=0.222, while the inner...
The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) (2008)
Moustakas, Leonidas A., Bolton, Adam J., Booth, Jeffrey T., Bullock, James S., Cheng, Edward, Coe, Dan, ...
Kazantzidis, Stelios, Bullock, James S., Zentner, Andrew R., Kravtsov, Andrey V., Moustakas, Leonidas A.
(Abridged) We conduct a series of high-resolution, dissipationless N-body simulations to investigate the cumulative effect of substructure mergers onto thin disk galaxies in the context of the LCDM...
Redshifts of Emission-Line Objects in the Hubble Ultra Deep Field (2007)
Xu, Chun, Pirzkal, Norbert, Malhotra, Sangeeta, Rhoads, James E., Mobasher, Bahram, Daddi, Emanuele, ...
We present redshifts for 115 emission-line objects in the Hubble Ultra Deep Field identified through the Grism ACS Program for Extragalactic Science (GRAPES) project using the slitless grism...
Redshifts of Emission Line Objects in the Hubble Ultra Deep Field (2007)
Xu, Chun, Pirzkal, Norbert, Malhotra, Sangeeta, Rhoads, James E., Mobasher, Bahram, Daddi, Emanuele, ...
We present redshifts for 115 emission line objects in the Hubble Ultra Deep Field (HUDF) identified through the GRism ACS Program for Extragalactic Science (GRAPES) project using the slitless grism...
A More Fundamental Plane (2007)
Bolton, Adam S., Burles, Scott, Treu, Tommaso, Koopmans, Leon V. E., Moustakas, Leonidas A.
We combine strong-lensing masses with SDSS stellar velocity dispersions and HST-ACS effective (half-light) radii for 36 lens galaxies from the Sloan Lens ACS (SLACS) Survey to study the mass...
Gavazzi, Raphael, Treu, Tommaso, Rhodes, Jason D., Koopmans, Leon V. E., Bolton, Adam S., Burles, Scott, ...
We present a weak gravitational lensing analysis of 22 early-type strong lens galaxies, based on deep HST images obtained as part of the Sloan Lens ACS Survey. Using the most advanced techniques to...
Redshifts of emission-line objects in the Hubble Ultra Deep Field (2007)
Xu, Chun, Pirzkal, Norbert, Malhotra, Sangeeta, Rhoads, James E., Mobasher, Bahram, Daddi, Emanuele, ...
We present redshifts for 115 emission-line objects in the Hubble Ultra Deep Field identified through the Grism ACS Program for Extragalactic Science (GRAPES) project using the slitless grism...
The all-wavelength extended groth strip international survey (AEGIS) data sets (2007)
Davis, Michael A., Guhathakurta, Puragra, Konidaris, Nick P., Newman, Jeffrey A., Ashby, Matthew L. N., Biggs, Andrew D., ...
In this the first of a series of Letters, we present a panchromatic data set in the Extended Groth Strip region of the sky. Our survey, the All-Wavelength Extended Groth Strip International Survey...
A New Einstein Cross: A Highly Magnified, Intrinsically Faint Lyman-Alpha Emitter at z=2.7 (2006)
Bolton, Adam S., Moustakas, Leonidas A., Stern, Daniel, Burles, Scott, Dey, Arjun, Spinrad, Hyron
We report the discovery of a new Einstein cross at redshift z_S = 2.701 based on Lyman-alpha emission in a cruciform configuration around an SDSS luminous red galaxy (z_L = 0.331). The system was...
Bolton, Adam S., Burles, Scott, Koopmans, Leon V. E., Treu, Tommaso, Moustakas, Leonidas A.
The Sloan Lens ACS (SLACS) Survey is an efficient Hubble Space Telescope Snapshot imaging survey for new galaxy-scale strong gravitational lenses. The targeted lens candidates are selected...
Yan, Haojing, Dickinson, Mark, Stern, Daniel, Eisenhardt, Peter R. M., Chary, Ranga-Ram, Giavalisco, Mauro, ...
We use data from the first epoch of observations with the IRAC/Spitzer for the GOODS to detect and study a collection of LBGs at z ~ 6 to 5 in the HUDF, six of which have spectroscopic confirmation....
Dahlen, Tomas, Mobasher, Bahram, Somerville, Rachel S., Moustakas, Leonidas A., Dickinson, Mark, Ferguson, Henry C., ...
Using Hubble Space Telescope and ground-based U through K- band photometry from the Great Observatories Origins Deep Survey (GOODS), we measure the evolution of the luminosity function and luminosity...
Allen, Paul D., Moustakas, Leonidas A., Dalton, Gavin, MacDonald, Emily, Blake, Chris, Clewley, Lee, ...
We present measurements of the clustering properties of bright ($L>L_{*}$) z$\sim$4 Lyman Break Galaxies (LBGs) selected from the Oxford-Dartmouth Thirty Degree Survey (ODT). We describe techniques...
Allen, Paul D., Moustakas, Leonidas A., Dalton, Gavin, MacDonald, Emily, Blake, Chris, Clewley, Lee, ...
We present measurements of the clustering properties of bright (L > L*) z~ 4 Lyman break galaxies (LBGs) selected from the Oxford- Dartmouth Thirty Degree Survey (ODT). We describe techniques used to...
Allen, Paul D., Moustakas, Leonidas A., Dalton, Gavin, MacDonald, Emily, Blake, Chris, Clewley, Lee, ...
We present measurements of the clustering properties of bright (L > L*) z∼ 4 Lyman break galaxies (LBGs) selected from the Oxford–Dartmouth Thirty Degree Survey (ODT). We describe...
Allen, Paul D., Moustakas, Leonidas A., Dalton, Gavin, MacDonald, Emily, Blake, Chris, Clewley, Lee, ...
We present measurements of the clustering properties of bright (L > L*) z∼ 4 Lyman break galaxies (LBGs) selected from the Oxford–Dartmouth Thirty Degree Survey (ODT). We describe...
SDSSJ140228.22+632133.3: A New Spectroscopically Selected Gravitational Lens (2004)
Bolton, Adam S., Burles, Scott, Koopmans, Leon V. E., Treu, Tommaso, Moustakas, Leonidas A.
(abridged) We present Gemini integral-field unit (IFU) spectroscopy and Hubble Space Telescope (HST) F435W- and F814W-band images of a new four-image gravitational lens, SDSSJ140228.22+632133.3,...
Yan, Haojing, Dickinson, Mark, Eisenhardt, Peter R. M., Ferguson, Henry C., Grogin, Norman A., Paolillo, Maurizio, ...
Using early data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope, taken for the Great Observatories Origins Deep Survey (GOODS), we identify and study objects that are...
A Redshift z=5.4 Lyman alpha Emitting Galaxy with Linear Morphology in the GRAPES/UDF Field (2004)
Rhoads, James E., Panagia, Nino, Windhorst, Rogier A., Malhotra, Sangeeta, Pirzkal, Norbert, Xu, Chun, ...
We have discovered an extended Lyman alpha plume associated with a compact source at redshift 5.4 in slitless spectroscopic data from the Grism ACS Program for Extragalactic Science (GRAPES) project....
X-ray constraints on ionizing photons from accreting black holes at Z~6 (2004)
Moustakas, Leonidas A., Immler, Stefan
Using an X-ray stacking procedure, we provide a robust upper limit to the X-ray luminosity per object of a set of 54 z~5.8 galaxy candidates in the Hubble Ultra Deep Field, which is within the 1...
MacDonald, Emily C., Allen, Paul, Dalton, Gavin, Moustakas, Leonidas A., Heymans, Catherine, Edmondson, Edward, ...
The Oxford Dartmouth Thirty Degree Survey (ODTS) is a deep, wide, multi-band imaging survey designed to cover a total of 30 square degrees in BVRi'Z, with a subset of U and K band data, in four...
MacDonald, Emily C., Allen, Paul, Dalton, Gavin, Moustakas, Leonidas A., Heymans, Catherine, Edmondson, Edward, ...
The Oxford-Dartmouth Thirty Degree Survey (ODTS) is a deep, wide, multiband imaging survey designed to cover a total of 30 deg2 in BVRi'Z, with a subset of U- and K-band data, in four separate fields...
MacDonald, Emily C., Allen, Paul, Dalton, Gavin, Moustakas, Leonidas A., Heymans, Catherine, Edmondson, Edward, ...
The Oxford-Dartmouth Thirty Degree Survey (ODTS) is a deep, wide, multiband imaging survey designed to cover a total of 30 deg2 in BVRi'Z, with a subset of U- and K-band data, in four separate fields...
Evolution in the Colors of Lyman-Break Galaxies from Z~4 to Z~3 (2003)
Papovich, Casey, Dickinson, Mark, Ferguson, Henry C., Giavalisco, Mauro, Lotz, Jennifer, Madau, Piero, ...
The integrated colors of distant galaxies provide a means for interpreting the properties of their stellar content. Here, we use rest-frame UV-to-optical colors to constrain the spectral-energy...
Moustakas, Leonidas A., Casertano, Stefano, Conselice, Chris, Dickinson, Mark E., Eisenhardt, Peter, Ferguson, Henry C., ...
Using U'- through Ks-band imaging data in the GOODS-South field, we construct a large, complete sample of 275 ``extremely red objects'' (EROs; K_s3.35; AB), all with deep HST/ACS imaging in B_435,...
The Size Evolution of High Redshift Galaxies (2003)
Ferguson, Henry C., Dickinson, Mark, Giavalisco, Mauro, Kretchmer, Claudia, Ravindranath, Swara, Idzi, Rafal, ...
Hubble Space Telescope images of high-redshift galaxies selected via color and photometric redshifts are used to examine the size and axial-ratio distribution of galaxies as a function of redshift at...
Somerville, Rachel S., Moustakas, Leonidas A., Mobasher, Bahram, Gardner, Jonathan P., Cimatti, Andrea, Conselice, Christopher, ...
The redshift distribution of near-IR selected galaxies is often used to attempt to discriminate between the classical view of galaxy formation, in which present-day luminous galaxies were assembled...
Cosmic Variance in the Great Observatories Origins Deep Survey (2003)
Somerville, Rachel S., Lee, Kyoungsoo, Ferguson, Henry C., Gardner, Jonathan P., Moustakas, Leonidas A., Giavalisco, Mauro
Cosmic variance is the uncertainty in observational estimates of the volume density of extragalactic objects such as galaxies or quasars arising from the underlying large-scale density fluctuations....
Detecting dark matter substructure spectroscopically in strong gravitational lenses (2002)
Moustakas, Leonidas A., Metcalf, R. Benton
The Cold Dark Matter (CDM) model for galaxy formation predicts that a significant fraction of mass in the dark matter haloes that surround L L* galaxies is bound in substructures of mass 1E4-1E7Msun....
Moustakas, Leonidas A., Somerville, Rachel S.
Wide field near-infrared (IR) surveys have revealed a population of galaxies with very red optical$-$IR colors, which have been termed ``Extremely Red Objects'' (EROs). Modeling suggests that such...
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...
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...
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,...
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...
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...