A&A 418, 885-906 (2004)
DOI: 10.1051/0004-6361:20034434
The FORS Deep Field spectroscopic survey
S. Noll1, D. Mehlert1, I. Appenzeller1, R. Bender2, A. Böhm3, A. Gabasch2, J. Heidt1, U. Hopp2, K. Jäger3, S. Seitz2, O. Stahl1, C. Tapken1 and B. L. Ziegler31 Landessternwarte Heidelberg, Königstuhl, 69117 Heidelberg, Germany
2 Universitätssternwarte München, Scheinerstraße 1, 81679 München, Germany
3 Universitäts-Sternwarte Göttingen, Geismarlandstraße 11, 37083 Göttingen, Germany
(Received 2 October 2003 / Accepted 30 January 2004 )
Abstract
We present a catalogue and atlas of low-resolution spectra of a
well defined sample of 341 objects in the FORS Deep Field. All spectra were
obtained with the FORS instruments at the ESO VLT with essentially the same
spectroscopic set-up. The observed extragalactic objects cover the redshift
range
0.1 to
5.0. 98 objects are starburst galaxies and QSOs at
z > 2.
Using this data set we investigated the evolution of the characteristic
spectral properties of bright starburst galaxies and their mutual relations
as a function of redshift. Significant evolutionary effects were found for
redshifts
2 < z < 4. Most conspicuous are the increase of the average
C IV absorption strength, of the dust reddening, and of the intrinsic UV
luminosity, and the decrease of the average Ly
emission strength with
decreasing redshift. In part the observed evolutionary effects can be
attributed to an increase of the metallicity of the galaxies with cosmic age.
Moreover, the increase of the total star-formation rates and the stronger
obscuration of the starburst cores by dusty gas clouds suggest the occurrence
of more massive starbursts at later cosmic epochs.
Key words: galaxies: high-redshift -- galaxies: starburst -- galaxies: fundamental parameters -- galaxies: evolution
Offprint request: S. Noll, snoll@lsw.uni-heidelberg.de
SIMBAD Objects
Tables at the CDS
© ESO 2004

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