Other
Scientific paper
Mar 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011an....332..283p&link_type=abstract
Astronomische Nachrichten, Vol.332, Issue 3, p.283
Other
Galaxies: Abundances, Galaxies: Formation, Galaxies: Evolution, Gamma Rays: Bursts
Scientific paper
Gamma-ray bursts (GRBs) are the most powerful explosions since the formation of the Universe, associated with the death of massive stars or mergers of compact stellar objects. Several recent striking results strongly support the idea that host galaxies of GRBs are opening a new view on our understanding of galaxy formation and evolution, back to the very primordial universe at z ˜8. They form a unique sample of galaxies which cover a wide range of redshift, they are typically weak with low mass and unlike other methods they are not selected on luminosity. In recent years, thanks to the support of new generation instruments, multi-band photometry and spectroscopy allow us to better investigate the properties of these host galaxies (e.g., stellar mass, age, SFR, metallicity), to study their possible evolution and to compare them with field galaxies and other classes of galaxies. GRB host spectroscopy is one of the main science drivers behind the X-shooter spectrograph. In this paper, we present the first results of the program devoted to Italian-French GTO multiband spectroscopy of GRB host galaxies with X-shooter.
Based on observations collected at the European Southern Observatory Very Large Telescope, Cerro Paranal, Chile �Programs 084.A-0631(A), 084.A-0631(B), and 0.85A-0795(A).
Covino Stefano
Flores Hector
Goldoni Paolo
Hammer Francçois
Onori F.
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