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The Time-Domain Spectroscopic Survey: Target Selection for Repeat Spectroscopy
Chelsea L. MacLeod, Paul J. Green, Scott F. Anderson +35
As astronomers increasingly exploit the information available in the time domain, spectroscopic variability in particular opens broad new channels of investigation. Here we describ…
Broad absorption line disappearance and emergence using multiple-epoch spectroscopy from the Sloan Digital Sky Survey
S. M. McGraw, W. N. Brandt, C. J. Grier +8
We investigate broad absorption line (BAL) disappearance and emergence using a 470 BAL-quasar sample over < 0.10-5.25 rest-frame years with at least three spectroscopic epochs for…
X-ray Insights into the Nature of Quasars with Redshifted Broad Absorption Lines
Ning-Xiao Zhang, W. N. Brandt, N. S. Ahmed +8
We present observations of seven broad absorption line (BAL) quasars at -2.516 with redshifted BAL troughs (RSBALs). Five of our seven targets were detected by $…