The redshift of a lensing galaxy in PMN J0134 - 0931

Patrick B. Hall, Gordon T. Richards, Donald G. York, Charles R. Keeton, David V. Bowen, Donald P. Schneider, David J. Schlegel, J. Brinkmann

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27 Scopus citations


The Sloan Digital Sky Survey (SDSS) automatically targeted as a quasar candidate the recently discovered, gravitationally lensed, extremely reddened z = 2.2 quasar PMN 0134-0931. The SDSS spectrum exhibits Ca II absorption at z = 0.76451, which we identify as the redshift of a lensing galaxy. Hubble Space Telescope imaging shows that components C, D, and E of the system are significantly redder than components A or B and detects faint galaxy emission between D and A+B. The redshift of the dust responsible for the reddening remains unconstrained with current data. However, we outline a model wherein lensing and differential reddening by a z = 0.76451 galaxy pair can entirely explain this system.

Original languageEnglish (US)
Pages (from-to)L51-L54
JournalAstrophysical Journal
Issue number2 II
StatePublished - Aug 20 2002

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Dust, extinction
  • Gravitational lensing
  • Quasars: individual (PMN J0134-0931)


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