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AGN Host Galaxy Morphologies in COSMOS
J. M. Gabor, C. D. Impey, K. Jahnke +14
We use HST/ACS images and a photometric catalog of the COSMOS field to analyze morphologies of the host galaxies of approximately 400 AGN candidates at redshifts 0.3 < z < 1.0. We…
Color, 3D simulated images with shapelets
M. Ferry, J. Rhodes, R. Massey +3
We present a method to simulate color, 3-dimensional images taken with a space-based observatory by building off of the established shapelets pipeline. The simulated galaxies exhib…
First catalog of strong lens candidates in the COSMOS field
Cecile Faure, Jean-Paul Kneib, Giovanni Covone +19
We present the first catalog of 67 strong galaxy-galaxy lens candidates discovered in the 1.64 square degree Hubble Space Telescope COSMOS survey. Twenty of these systems display m…
SuperNova Acceleration Probe (SNAP): Investigating Photometric Redshift Optimization
Tomas Dahlen, Bahram Mobasher, Stephanie Jouvel +5
The aim of this paper is to investigate ways to optimize the accuracy of photometric redshifts for a SNAP like mission. We focus on how the accuracy of the photometric redshifts de…
A Comparison of Weak Lensing Measurements From Ground- and Space-Based Facilities
Mansi M. Kasliwal, Richard Massey, Richard S. Ellis +2
We assess the relative merits of weak lensing surveys, using overlapping imaging data from the ground-based Subaru telescope and the Hubble Space Telescope (HST). Our tests complem…
Pixelation Effects in Weak Lensing
F. William High, Jason Rhodes, Richard Massey +1
Weak gravitational lensing is a promising probe of dark matter and dark energy requiring accurate measurement of the shapes of faint, distant galaxies. Such measures are hindered b…
The COSMOS Survey: Hubble Space Telescope / Advanced Camera for Surveys (HST/ACS) Observations and Data Processing
A. M. Koekemoer, H. Aussel, D. Calzetti +11
We describe the details of the Hubble Space Telescope (HST) Advanced Camera for Surveys / Wide Field Channel (ACS/WFC) observations of the COSMOS field, including the data calibrat…
The redshift evolution of early-type galaxies in COSMOS: Do massive early-type galaxies form by dry mergers?
C. Scarlata, C. M. Carollo, S. J. Lilly +26
ABRIDGED: We study the evolution since z~1 of the rest-frame B luminosity function of the early-type galaxies (ETGs) in ~0.7 deg^2 in the COSMOS field. In order to identify ALL pro…
The Stability of the Point Spread Function of the Advanced Camera for Surveys on the Hubble Space Telescope and Implications for Weak Gravitational Lensing
Jason D. Rhodes, Richard Massey, Justin Albert +11
(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…
COSMOS: 3D weak lensing and the growth of structure
Richard Massey, Jason Rhodes, Alexie Leauthaud +17
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…
The Cosmic Evolution Survey (COSMOS): a large-scale structure at z=0.73 and the relation of galaxy morphologies to local environment
L. Guzzo, P. Cassata, A. Finoguenov +29
We have identified a large-scale structure at z~0.73 in the COSMOS field, coherently described by the distribution of galaxy photometric redshifts, an ACS weak-lensing convergence…
The Sloan Lens ACS Survey. IV: the mass density profile of early-type galaxies out to 100 effective radii
Raphael Gavazzi, Tommaso Treu, Jason D. Rhodes +5
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 advan…
The XMM-Newton wide-field survey in the COSMOS field: III. optical identification and multiwavelength properties of a large sample of X-ray selected sources
M. Brusa, G. Zamorani, A. Comastri +31
[ABRIGED] We present the optical identification of a sample of 695 X-ray sources detected in the first 1.3 deg^2 of the XMM-COSMOS survey, down to a 0.5-2 keV (2-10 keV) limiting f…
COSMOS morphological classification with ZEST (the Zurich Estimator of Structural Types) and the evolution since z=1 of the Luminosity Function of early-, disk-, and irregular galaxies
C. Scarlata, C. M. Carollo, S. J. Lilly +26
(ABRIDGED) Motivated by the desire to reliably and automatically classify structure of thousands of COSMOS galaxies, we present ZEST, the Zurich Estimator of Structural Types. To c…
Telescope Spectrophotometric and Absolute Flux Calibration, and National Security Applications, Using a Tunable Laser on a Satellite
Justin Albert, William Burgett, Jason Rhodes
We propose a tunable laser-based satellite-mounted spectrophotometric and absolute flux calibration system, to be utilized by ground- and space-based telescopes. As spectrophotomet…
Modelling and Correcting the Time-Dependent ACS PSF
Jason Rhodes, Richard Massey, Justin Albert +3
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 kn…
The Shear TEsting Programme 1: Weak lensing analysis of simulated ground-based observations
Catherine Heymans, Ludovic Van Waerbeke, David Bacon +22
The Shear TEsting Programme, STEP, is a collaborative project to improve the accuracy and reliability of all weak lensing measurements in preparation for the next generation of wid…
The DEEP Groth Strip Survey. I. The Sample
Nicole P. Vogt, David C. Koo, Andrew C. Phillips +18
The Deep Extragalactic Exploratory Probe (DEEP) is a multi-phase research program dedicated to the study of the formation and evolution of galaxies and of large scale structure in…
A deep Chandra observation of the Groth Strip. I. The X-ray data
K. Nandra, E. S. Laird, K. Adelberger +6
We present the results of a 200 ks Chandra observation of part of the Groth Strip region, using the ACIS-I instrument. We present a relatively simple method for the detection of po…
Supernova / Acceleration Probe: A Satellite Experiment to Study the Nature of the Dark Energy
SNAP Collaboration, G. Aldering, W. Althouse +109
The Supernova / Acceleration Probe (SNAP) is a proposed space-based experiment designed to study the dark energy and alternative explanations of the acceleration of the Universe's…
Probing Dark Matter and Dark Energy with Space-Based Weak Lensing
Richard Massey, Alexandre Refregier, Jason Rhodes
Weak lensing provides a direct measure of the distribution of mass in the universe, and is therefore a uniquely powerful probe of dark matter. Weak lensing can also be used to meas…
Measurement of Cosmic Shear with the Space Telescope Imaging Spectrograph
Jason Rhodes, Alexandre Refregier, Nicholas R. Collins +3
Weak lensing by large-scale structure allows a direct measure of the dark matter distribution. We have used parallel images taken with the Space Telescope Imaging Spectrograph (STI…
Weak Lensing from Space III: Cosmological Parameters
Alexandre Refregier, Richard Massey, Jason Rhodes +6
Weak gravitational lensing provides a unique method to directly map the dark matter in the universe and measure cosmological parameters. Current weak lensing surveys are limited by…
Weak Lensing from Space II: Dark Matter Mapping
Richard Massey, Jason Rhodes, Alexandre Refregier +8
We study the accuracy with which weak lensing measurements could be made from a future space-based survey, predicting the subsequent precisions of 3-dimensional dark matter maps, p…