Other
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001msngr.103...24f&link_type=abstract
The Messenger, No. 103, p. 24 - 26 (March 2001)
Other
High-Redshift Galaxies, Gamma-Ray Bursts, Host Galaxies
Scientific paper
The population of bright galaxies at z = 2-4 has been studied intensively using the Lyman-Break technique (Steidel et al. 1996; Cristiani et al. 2000). Currently, redshifts can be determined from absorption features of galaxies selected in this way down to R P 25.5 (e.g. Steidel et al. 2000), which is commonly referred to as the spectroscopic limit. Currently, very little is known about the galaxy population below the spectroscopic limit. This is an unfortunate situation since all the information on the chemical enrichment of young galaxies (Damped Ly-a Absorbers) accessible through QSO absorption lines seems to be valid mainly for galaxies significantly fainter than R = 25.5 (Fynbo et al. 1999; Haehnelt et al. 2000). In order to select and study galaxies fainter than the current spectroscopic limit, one has to rely on other selection criteria than the Ly m a n - Break. Two promising possibilities are (i) to select galaxies with Ly-a emission lines, and (ii) to study the host galaxies of Gamma-Ray Bursts (GRBs).
Fynbo Johan U.
Møller Palle
Thomsen Bjarne
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