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

Research output: Contribution to journalArticle

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

Related Edinburgh Organisations

Original languageEnglish
Article numberA111
JournalAstronomy & astrophysics
Publication statusPublished - 2013


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.

    Research areas

  • Quasars: absorption lines, Quasars: emission lines

ID: 21501293