J-band spectroscopy of the z = 5.74 broad absorption line quasar SDSSP J104433.04-012502.2

R. W. Goodrich, R. Campbell, F. H. Chaffee, G. M. Hill, D. Sprayberry, W. N. Brandt, D. P. Schneider, S. Kaspi, X. Fan, J. E. Gunn, M. A. Strauss

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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.

Original languageEnglish (US)
Pages (from-to)L23-L25
JournalAstrophysical Journal
Issue number1 PART 2
StatePublished - Nov 1 2001

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Galaxies: active
  • Galaxies: nuclei
  • Quasars: absorption lines
  • Quasars: general
  • Quasars: individual (SDSS 1044-0125)


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