10.4k citations · 41k across the 81 of their papers we have counts for
81 papers
Fitting the Continuum Component of A Composite SDSS Quasar Spectrum Using CMA-ES
Jian Wu, Daniel E. Vanden Berk
Fitting the continuum component of a quasar spectrum in UV/optical band is challenging due to contamination of numerous emission lines. Traditional fitting algorithms such as the l…
Narrow absorption line variability in repeat quasar observations from the Sloan Digital Sky Survey
Troy L. Hacker, Robert J. Brunner, Britt F. Lundgren +1
We present the results from a time domain study of absorption lines detected in quasar spectra with repeat observations from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7).…
Probing the Extended Gaseous Regions of M31 with Quasar Absorption Lines
Sandhya Rao, Gendith Sardane, David Turnshek +4
We present HST-COS spectra of ten quasars located behind M31, selected to investigate the properties of gas associated with its extended disk and high velocity clouds (HVCs). The s…
Galaxies with Background QSOs, I: A Search for Strong Galactic H-alpha Lines
Donald G. York, Lorrie A. Straka, Michael Bishof +12
A search for emission lines in foreground galaxies in quasar spectra (z(gal) < z(QSO)) of the Sloan Digital Sky Survey (SDSS) data release 5 (DR5) reveals 23 examples of quasars sh…
A Quasar Catalog with Simultaneous UV, Optical and X-ray Observations by Swift
Jian Wu, Daniel Vanden Berk, Dirk Grupe +6
We have compiled a catalog of optically-selected quasars with simultaneous observations in UV/optical and X-ray bands by the Swift Gamma Ray Burst Explorer. Objects in this catalog…
Exploring the dust content of SDSS DR7 damped Lyman alpha systems at 2.155.2
Pushpa Khare, Daniel Vanden Berk, Donald G. York +2
We have studied a sample of 1084 intervening absorption systems with 2.155.2, having log(N) 20.0 in the spectra of QSOs in Sloan Digital Sky Survey (S…