AAS 201st Meeting, January, 2003
Session 6. The GOODS and Those HEROs
Poster, Monday, January 6, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[6.16] EROs in GOODS: The nature, morphologies, and X-ray properties of Extremely Red Object galaxies in the CDF-S field

L. A. Moustakas (STScI), N. Grogin (JHU), D. M. Alexander (PSU), S. Casertano (STScI), C. Conselice (Caltech), M. Dickinson, H. Ferguson (STScI), J. P. Gardner (NASA-GSFC), A. M. Koekemoer (STScI), C. Kretchmer (JHU), R. A. Lucas, B. Mobasher (STScI), C Papovich (U. Arizona), M. Richardson (STScI), D. Stern (JPL, Caltech), M. Stiavelli (STScI), E. Daddi, A. Renzini, L. da Costa (ESO), S. Arnouts (LAS, Marseille), B. Vandame (ESO), GOODS Team

Using collated U'- through Ks-band imaging data in the GOODS-South ACS mosaic (which overlaps with the Chandra Deep Field-South), we select `extremely red object' (ERO) galaxies through optical-minus-infrared colors that are comparable to, or in excess of, those possible by aged stellar populations at redshifts z=1-2. Using simple models consistent with current data on EROs, we employ color-selection criteria to split the sample of ~140 galaxies into `old,' `dusty,' and `other' subsets. We independently quantify their concentration and asymmetry indices using the high-resolution HST/ACS Z-band data. The objects are cross-correlated with the point- and extended X-ray sources list and comparisons made between the `AGN' and `non-AGN' ERO samples, particularly in view of the morphologies. Photometric redshifts for all objects have been determined using data from up to 13 bands combining ground- and ACS-photometry. Using these measurements, we attempt to determine the (astro-)physical parameters that characterize the main types of EROs, and place them in the context of galaxy formation at redshifts z=1-2.

Ground-based imaging data were taken at ESO 2.2m, NTT, VLT, and NOAO 4m telescopes and made publicly available.

If you would like more information about this abstract, please follow the link to http://www.stsci.edu/ftp/science/goods/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

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