J-Band Spectroscopy of the z = 5.74 Broad Absorption Line Quasar SDSSp J104433.04-012502.2

Details J-Band Spectroscopy of the z = 5.74 Broad Absorption Line Quasar SDSSp J104433.04-012502.2 J-Band Spectroscopy of the z = 5.74 Broad Absorption Line Quasar SDSSp J104433.04-012502.2

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...561l..23g&link_type=abstract

The Astrophysical Journal, Volume 561, Issue 1, pp. L23-L25.

Astronomy and Astrophysics

Astronomy

33

Galaxies: Active, Galaxies: Nuclei, Galaxies: Quasars: Absorption Lines, Galaxies: Quasars: General, Galaxies: Quasars: Individual: Alphanumeric: Sdss 1044-0125

Scientific paper

We use NIRSPEC, a near-IR spectrometer on Keck II, to obtain moderate-resolution (R=1540) spectroscopy that shows conclusively that the C IV emission line in the z=5.74 quasar SDSSp J104433.04-012502.2 is accompanied by broad, blueshifted C IV absorption. The line has a ``balnicity index'' of 900 km s-1 and a rest-frame equivalent width of 13.1+/-1.3 Å relative to the continuum. This confirms its membership in the class of objects called ``broad absorption line'' (BAL) quasi-stellar objects (QSOs). SDSSp J1044-0125 was previously suggested to be a BAL QSO based on its UV-to-X-ray flux ratio, which is larger than most non-BAL QSOs. The C IV emission is of normal strength, implying a metallicity similar to that found in other, lower redshift, QSOs. The data presented here were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation.

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