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Date and Time of the Query: 2018-12-16 T07:30:11 PST
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For refcode 2004A&A...421..913W:
There are 63501 NED objects in this reference.
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2004A&A...421..913W A catalogue of the Chandra Deep Field South with multi-colour classification and photometric redshifts from COMBO-17 C. Wolf, K. Meisenheimer, M. Kleinheinrich, A. Borch, S. Dye, M. Gray, L. Wisotzki, E. F. Bell, H.-W. Rix, A. Cimatti, G. Hasinger and G. Szokoly Received 25 March 2004 / Accepted 9 April 2004 We present the COMBO-17 object catalogue of the Chandra Deep Field South for public use, covering a field which is 31.5' x 30' in size. This catalogue lists astrometry, photometry in 17 passbands from 350 to 930 nm, and ground-based morphological data for 63 501 objects. The catalogue also contains multi-colour classification into the categories Star, Galaxy and Quasar as well as photometric redshifts. We include restframe luminosities in Johnson, SDSS and Bessell passbands and estimated errors. The redshifts are most reliable at R<24, where the sample contains approximately 100 quasars, 1000 stars and 10 000 galaxies. We use nearly 1000 spectroscopically identified objects in conjunction with detailed simulations to characterize the performance of COMBO-17. We show that the selection of quasars, more generally type-1 AGN, is nearly complete and minimally contaminated at z=[0.5,5] for luminosities above M_B_ = -21.7. Their photometric redshifts are accurate to roughly 5000 km s^-1^. Galaxy redshifts are accurate to 1% in {delta}_z_/(1+z) at R<21. They degrade in quality for progressively fainter galaxies, reaching accuracies of 2% for galaxies with R ~ 22 and of 10% for galaxies with R>24. The selection of stars is complete to R ~ 23, and deeper for M stars. We also present an updated discussion of our classification technique with maps of survey completeness, and discuss possible failures of the statistical classification in the faint regime at R >~ 24. Keywords: catalogs, surveys, techniques: photometric, methods: observational, galaxies: general
There are 63501 NED objects in this reference.
Please click here for ADS abstract

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