Mathematics – Logic
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.7902b&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #79.02; Bulletin of the American Astronomical Society, Vol. 34, p.1234
Mathematics
Logic
Scientific paper
Massive host galaxies of the first luminous quasars should be still undergoing a considerable cosmological infall of the neutral IGM. This process may be observable as a distinct spectroscopic signature in the blue wing of their Lyα line, as predicted by Barkana & Loeb (2002). We report on a search for such and effect and its possible redshift evolution in a sample of high-S/N, moderate-resolution spectra of ~ 80 QSOs in the redshift range z ~ 3.8 - 6.28, obtained using the ESI instrument at the WMKO Keck-II telescope. While associated Lyα absorption features are common, their physical interpretation is not yet clear. A key observational uncertainty is the determination of the systemic redshift for the QSOs. We will present a detailed analysis of this sample, and the possible interpretations in the context of Barkana-Loeb model and a general picture of early QSO and massive galaxy formation.
Bogosavljevic Milan
Castro S. M.
Djorgovski Stanislav G.
Lopes Pedro
Mahabal Ashish A.
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