50 citations · 251 across the 17 of their papers we have counts for
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astro-ph.GA2015★ 5 cited
Spectral principal component analysis of mid-infrared spectra of a sample of PG QSOs
Wei-Hao Bian, Zhi-Cheng He, Richard Green +3
A spectral principal component analysis (SPCA) of a sample of 87 PG QSOs at is presented for their mid-infrared spectra from Spitzer Space Telescope. We have derived the…
astro-ph.GA2015★ 21 cited
Variability of QSOs with variable regions in broad absorption troughs from the Sloan Digital Sky Survey
Zhi-Cheng He, Wei-Hao Bian, Xiao-Lei Jiang +1
The variability of broad absorption lines is investigated for a sample of 188 broad-absorption-line (BAL) quasars (QSOs) () with at least two-epoch observations from the S…