Radio-Selected Broad Absorption Line QSOs in the Sloan Digital Sky Survey

Details Radio-Selected Broad Absorption Line QSOs in the Sloan Digital Sky Survey Radio-Selected Broad Absorption Line QSOs in the Sloan Digital Sky Survey

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.1307v&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #13.07; Bulletin of the American Astronomical Society, Vol. 32, p.1423

Astronomy and Astrophysics

Astronomy

Scientific paper

We discuss 13 Broad Absorption Line (BAL) quasars discovered in the Sloan Digital Sky Survey (SDSS) and matched within 1 arcsec to sources in the FIRST radio survey catalog. The surface density of this sample of radio BALs is 3 to 4 times higher than in the FIRST Bright Quasar Survey (FBQS, White et al. 2000) because the SDSS sample is about 1.5 magnitudes deeper (r'≈ 19.0). We extend the results of Becker et al. (2000) to this fainter level and find that the fraction of BALs in the SDSS-FIRST subsample is the same as for all SDSS QSOs, and is consistent with the fraction of BALs in the FBQS. One or possibly two of the QSOs are of the very rare ``iron Lo-BAL'' class. We also find that the BAL QSOs are redder than the median QSO at the same redshift. The SDSS is a joint project of the University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, Max-Planck-Institute for Astronomy, New Mexico State University, Princeton University, United States Naval Observatory and the University of Washington. Funding has been provided by the Alfred P. Sloan Foundation, the member institutions, NASA, NSF, the U.S. DoE, and the Ministry of Education of Japan.

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