A Catalog of Post-starburst Quasars from Sloan Digital Sky Survey Data Release 7

Abstract

We present a catalog of nearby (z $\le$ 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 Hδ absorption ($\mathrm{EW}\ge 6\mathring{\mathrm{A}}$) 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.

arXiv comment11 pages, 7 figures, 2 tables, Accepted for publication in The Astrophysical Journal

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