COSMOS : Hubble Space Telescope Observations
Abstract
The Cosmic Evolution Survey (COSMOS) was initiated with an extensive allocation (590 orbits in Cycles 12-13) using the Hubble Space Telescope (HST) for high resolution imaging. Here we review the characteristics of the HST imaging with the Advanced Camera for Surveys (ACS) and parallel observations with NICMOS and WFPC2. A square field (1.8\deg) has been imaged with single-orbit ACS I-F814W exposures with 50% completeness for sources 0.5\arcsec in diameter at I = 26.0 mag. The ACS imaging is a key part of the COSMOS survey, providing very high sensitivity and high resolution (0.09\arcsec FWHM, 0.05\arcsec pixels) imaging and detecting 1.2 million objects to a limiting magnitude of 26.5 (AB). These images yield resolved morphologies for several hundred thousand galaxies. The small HST PSF also provides greatly enhanced sensitivity for weak lensing investigations of the dark matter distribution.
Keywords
Cite
@article{arxiv.astro-ph/0612306,
title = {COSMOS : Hubble Space Telescope Observations},
author = {N. Scoville and A. Benson and A. W. Blain and D. Calzetti and A. Comastri and P. Capak and C. Carilli and J. E. Carlstrom and C. M. Carollo and J. Colbert and E. Daddi and R. S. Ellis and M. Elvis and S. P. Ewald and M. Fall and A. Franceschini and M. Giavalisco and W. Green and R. E. Griffiths and L. Guzzo and G. Hasinger and C. Impey and J-P. Kneib and J. Koda and A. Koekemoer and O. Lefevre and S. Lilly and C. T. Liu and H. J. McCracken and R. Massey and Y. Mellier and S. Miyazaki and B. Mobasher and J. Mould and C. Norman and A. Refregier and A. Renzini and J. Rhodes and M. Rich and D. B. Sanders and D. Schiminovich and E. Schinnerer and M. Scodeggio and K. Sheth and P. L. Shopbell and Y. Taniguchi and N. Tyson and C. M. Urry and L. Van Waerbeke and P. Vettolani and S. D. M. White and L. Yan and G Zamorani},
journal= {arXiv preprint arXiv:astro-ph/0612306},
year = {2011}
}
Comments
21 pages, 6 figures -- to appear in COSMOS ApJ Suppl. special issue