We present a catalog of nearby (z ≤ 0.5) quasars with significant features of post-starburst stellar populations in their optical spectra, so-called post-starburst quasars, or PSQs. After carefully decomposing spectra from the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) Quasar Catalog into quasar and host-galaxy components, we derive a sample of 208 PSQs. Their host-galaxy components have strong H\delta\ absorption (EW≥6A˚) indicating a significant contribution of an intermediate-aged stellar population formed in a burst of star formation within the past 1 Gyr, which makes them potentially useful for studying the co-evolution of supermassive black holes and their host galaxies.
@article{arxiv.1803.00366,
title = {A Catalog of Post-starburst Quasars from Sloan Digital Sky Survey Data Release 7},
author = {P. Wei and Y. Gu and M. Brotherton and Y. Shi and Y. M. Chen},
journal= {arXiv preprint arXiv:1803.00366},
year = {2018}
}
Comments
11 pages, 7 figures, 2 tables, Accepted for publication in The Astrophysical Journal