A Catalog of Post-starburst Quasars from Sloan Digital Sky Survey Data Release 7
| Autor: | Wei, P., Gu, Y., Brotherton, M., Shi, Y., Chen, Y. M. |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | The Astrophysical Journal, Volume 857, Issue 1, article id. 27, 8 pp. (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/1538-4357/aab499 |
| Popis: | We present a catalog of nearby (z $\leq$ 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 ($\rm EW \geq 6 \AA$) 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. Comment: 11 pages, 7 figures, 2 tables, Accepted for publication in The Astrophysical Journal |
| Databáze: | arXiv |
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