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Title:
The Great Observatories Origins Deep Survey. VLT/FORS2 spectroscopy in the GOODS-South Field
Authors:
Vanzella, E.; Cristiani, S.; Dickinson, M.; Kuntschner, H.; Moustakas, L. A.; Nonino, M.; Rosati, P.; Stern, D.; Cesarsky, C.; Ettori, S.; Ferguson, H. C.; Fosbury, R. A. E.; Giavalisco, M.; Haase, J.; Renzini, A.; Rettura, A.; Serra, P.; The Goods Team
Affiliation:
AA(Dipartimento di Astronomia dell'Università di Padova, Vicolo dell'Osservatorio 2, 35122 Padova, Italy ; INAF - Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, 40131 Trieste, Italy), AB(INAF - Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, 40131 Trieste, Italy), AC(National Optical Astronomy Obs., PO Box 26732, Tucson, AZ 85726, USA), AD(ST-ECF, Karl-Schwarzschild Str. 2, 85748 Garching, Germany), AE(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AF(INAF - Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, 40131 Trieste, Italy), AG(European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching 85748, Germany), AH(Jet Propulsion Laboratory, California Institute of Technology, MS 169-506, 4800 Oak Grove Drive, Pasadena, CA 91109, USA), AI(European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching 85748, Germany), AJ(European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching 85748, Germany), AK(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AL(ST-ECF, Karl-Schwarzschild Str. 2, 85748 Garching, Germany), AM(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AN(ST-ECF, Karl-Schwarzschild Str. 2, 85748 Garching, Germany), AO(European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching 85748, Germany), AP(European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching 85748, Germany ; Université Paris-Sud XI, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France), AQ(ST-ECF, Karl-Schwarzschild Str. 2, 85748 Garching, Germany ; Kapteyn Instituut, Landleven 12, 9747 AD Groningen, The Netherlands)
Publication:
Astronomy and Astrophysics, Volume 434, Issue 1, April IV 2005, pp.53-65 (A&A Homepage)
Publication Date:
04/2005
Origin:
EDP Sciences
Keywords:
cosmology: observations, cosmology: large-scale structure of Universe, galaxies: evolution
DOI:
10.1051/0004-6361:20041532
Bibliographic Code:
2005A&A...434...53V

Abstract

We present the first results of the ESO/GOODS program of spectroscopy of faint galaxies in the Chandra Deep Field South (CDF-S). 399 spectra of 303 unique targets have been obtained in service mode with the FORS2 spectrograph at the ESO/VLT, providing 234 redshift determinations (the median of the redshift distribution is at 1.04). The typical redshift uncertainty is estimated to be σz ≃ 0.001. Galaxies have been color selected in a way that the resulting redshift distribution typically spans from z=0.5 to 2. The reduced spectra and the derived redshifts are released to the community through the ESO web page http://www.eso.org/science/goods/. Large scale structure is clearly detected at z ≃ 0.67, 0.73, 1.10 and 1.61. Three Lyman-break galaxies have also been included as targets and are confirmed to have redshifts z=4.800, 4.882 and 5.828. In a few cases, we observe clear [OII]3727 rotation curves, even at the relatively low resolution (Re = 860) of the present observations. Assuming that the observed velocity structure is due to dynamically-relaxed rotation, this is an indication of large galactic masses (few times 10 11 M_ȯ) at z ˜ 1.

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