星系形態(tài)星表數(shù)據(jù)描述(已修改)
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【正文】 Zurich Structure amp。 Morphology Catalog DefinitionsCOSMOS OverviewThe COSMOS Archive serves data taken for the Cosmic Evolution Survey (COSMOS) is an astronomical survey designed to probe the formation and evolution of galaxies as a function of cosmic time (redshift) and large scale structural environment. The survey covers a 2 square degree equatorial field with imaging by most of the major spacebased telescopes (Hubble, Spitzer, GALEX, XMM, Chandra) and a number of large ground based telescopes (Subaru, VLA, ESOVLT, UKIRT, NOAO, CFHT, and others).IRSA serves the COSMOS archive using the following search methods: Spatial search on all images and small catalogs, using Atlas Advanced search on only the larger catalogs, using GatorZurich Structure amp。 Morphology Catalog OverviewThis catalog contains the measurements presented in:1 1. Scarlata, Carollo, Lilly et al 2007, ApJS, 172, 406 (., the Zurich Estimator of Structural Type [ZEST] catalog。 measurements down to a limiting magnitude of I_AB=24. ZEST measurements for galaxies with halflight radii 0 .17 are unreliable, especially for galaxies with a steep light profile)2 2. Sargent, Carollo, Lilly et al 2007, ApJS, 172, 434 (., SingleSersic GIM2D fits。 measurements down to a limiting magnitude of I_AB=。formal GIM2D fits are also listed for approx. 2650 pulsory zCOSMOSBright xray, radio, etc. sources with I_AB however, the quality of the fits deteriorates for sources substantially fainter than ~I_AB~23)This catalog is based on the May 2006 release % of Alexie Leauthaud39。s ACS catalog (cut at the limits mentioned above)Notes:(a) All
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