A glance at the host galaxy of high-redshift quasars using strong damped lyman-α systems as coronagraphs

Hayley Finley, Patrick Petitjean, Isabelle Pâris, Pasquier Noterdaeme, Jonathan Brinkmann, Adam D. Myers, Nicholas P. Ross, Donald P. Schneider, Dmitry Bizyaev, Howard Brewington, Garrett Ebelke, Elena Malanushenko, Viktor Malanushenko, Daniel Oravetz, Kaike Pan, Audrey Simmons, Stephanie Snedden

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23 Scopus citations

Abstract

We searched quasar spectra from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS) for the rare occurrences where a strong damped Lyman-Á absorber (DLA) blocks the Broad Line Region emission from the quasar and acts as a natural coronagraph to reveal narrow LyÁ emission from the host galaxy. We define a statistical sample of 31 DLAs in Data Release 9 (DR9) with log N(H i) iÝ 21.3 cm.2 located at less than 1500 km s.1 from the quasar redshift. In 25% (8) of these DLAs, a strong narrow LyÁ emission line is observed with flux i"25 iÁ 10.17 erg s.1 cm.2 on average. For DLAs without this feature in their troughs, the average 3-Ò upper limit is.

Original languageEnglish (US)
Article numberA111
JournalAstronomy and Astrophysics
Volume558
DOIs
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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