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J-Band Spectroscopy of the z = 5.74 BAL QSO SDSSp J104433.04-012502.2

R. W. Goodrich·R. Campbell·F. 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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Abstract

We use the NIRSPEC 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 and a rest-frame equivalent width of 13.1 +/- 1.3 relative to the continuum. This confirms its membership in the class of objects called "broad-absorption line" (BAL) QSOs. SDSSP J1044-0125 was previously suggested to be a BAL QSO based on its larger UV-to-X-ray flux ratio 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.

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R. W. Goodrich, R. Campbell, F. Chaffee, G. M. Hill, D. Sprayberry, W. N. Brandt, D. P. Schneider, S. Kaspi, X. Fan, J. E. Gunn, M. A. Strauss. 2001-09-26. J-Band Spectroscopy of the z = 5.74 BAL QSO SDSSp J104433.04-012502.2. https://arxiv.org/abs/astro-ph/0109464

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