Near-IR spectroscopy of high redshift quasars

Details Near-IR spectroscopy of high redshift quasars Near-IR spectroscopy of high redshift quasars

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..32..105j&link_type=abstract

The Nuclear Region, Host Galaxy and Environment of Active Galaxies (Eds. Erika Benítez, Irene Cruz-González, & Yair Krongold) Re

Astronomy and Astrophysics

Astronomy

2

Quasars, High Redshift, Metallicity, Emission Lines

Scientific paper

Quasars are among the most luminous objects in the Universe, and allow us to study the ISM in their host galaxies at very high redshift, up to z > 6 (Fan et al. 2001, 2003, 2004). The spectra of high redshift quasars contain important information about the enrichment history of the gas and, therefore, provide constraints on the star formation history in their host galaxies (Hamann & Ferland 1999). We have investigated the metallicity of the Broad Line Region (BLR) in a sample of quasars, at 4< z <6.4, by using a new diagnostic tool involving the line ratio of Si IV 1398+ O IV 1402 to C IV 1549 (Nagao et al. 2006).

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