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Optical and X-ray Identification of Faint Radio Sources in the GOODS-S ACS Field | J. Afonso
; B. Mobasher
; A. Koekemoer
; R. P. Norris
; L. Cram
; | Date: |
27 Oct 2005 | Affiliation: | 1,2), B. Mobasher , A. Koekemoer , R. P. Norris , L. Cram ( Astronomical Observatory of Lisbon, Centre for Astronomy and Astrophysics of the University of Lisbon, STScI, Australia Telescope National Facility, The Australian National University | Abstract: | We present optical and X-ray identifications for the sixty-four radio sources in the GOODS-S ACS field revealed in the ATCA 1.4 GHz survey of the Chandra Deep Field South. Optical identifications are made using the ACS images and catalogs, while the X-ray view is provided by the Chandra X-ray Observatory 1 Ms observations. Redshifts for the identified sources are drawn from publicly available catalogs of spectroscopic observations and multi-band photometric-based estimates. Using this multiwavelength information we provide a first characterization of the faint radio source population in this region. The sample contains a mixture of star-forming galaxies and active galactic nuclei, as identified by their X-ray properties and optical spectroscopy. A large number of morphologically disturbed galaxies is found, possibly related to the star-formation phenomena. In spite of the very deep optical data available in this field, seven of the sixty-four radio sources have no optical identification to z(850)~28 mag. Only one of these is identified in the X-rays. | Source: | arXiv, astro-ph/0510774 | Services: | Forum | Review | PDF | Favorites |
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