22 citations · 22 across the 1 of their papers we have counts for
2 papers
astro-ph.GA2019★ 22 cited
Variability of Low-ionization Broad Absorption Line Quasars Based on Multi-epoch Spectra from The Sloan Digital Sky Survey
Weimin. Yi, W. N. Brandt, P. B. Hall +5
We present absorption variability results for 134 bona fide \mgii\ broad absorption line (BAL) quasars at 0.46~~2.3 covering days to 10 yr in the rest f…
astro-ph.GA2018
Broad absorption line disappearance/emergence in multiple ions in a weak emission-line quasar
Weimin Yi, M. Vivek, W. N. Brandt +9
We report the discovery of disappearance of Mg ii, Al iii, C iv, and Si iv broad absorption lines (BALs) at the same velocity, accompanied by a new Civ BAL emerging at a higher vel…