2007/04/19 by P. Capak, H. Aussel, M. Ajiki +85 · 5 citations
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Image resolution #Large Synoptic Survey Telescope #Optics #Panchromatic film #Photometry (optics) #Physics #Quasar #Spectral line #Star formation #Stars #Stellar population #Stellar, planetary, and galactic studies #Subaru Telescope #Telescope #astro-ph
paper · pdf · doi:10.1086/519081
published as Astrophys.J.Suppl.172:99-116,2007 · 19 pages, 13 figures, 14 tables, Accepted to ApJS for COSMOS speciall issue
arxiv created 2007/04/19 · openalex publication_date 2007/08/31 · arxiv updated 2010/11/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present imaging data and photometry for the COSMOS survey in 15 photometric bands between 0.3 and 2.4 μm. These include data taken on the Subaru 8.3 m telescope, the KPNO and CTIO 4 m telescopes, and the CFHT 3.6 m telescope. Special techniques are used to ensure that the relative photometric calibration is better than 1% across the field of view. The absolute photometric accuracy from standard-star measurements is found to be 6%. The absolute calibration is corrected using galaxy spectra, providing colors accurate to 2% or better. Stellar and galaxy colors and counts agree well with the expected values. Finally, as the first step in the scientific analysis of these data we construct panchromatic number counts which confirm that both the geometry of the universe and the galaxy population are evolving.