Dust Reddening in Sloan Digital Sky Survey Quasars | Zendy

Philip F. Hopkins | Zendy; Michael A. Strauss | Zendy; Patrick B. Hall | Zendy; Gordon T. Richards | Zendy; Ariana S. Cooper | Zendy; Donald P. Schneider | Zendy; D. E. vanden Berk | Zendy; Sebastian Jester | Zendy; J. Brinkmann | Zendy; G. Szokoly | Zendy

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Dust Reddening in Sloan Digital Sky Survey Quasars

Author(s) -

Philip F. Hopkins,

Michael A. Strauss,

Patrick B. Hall,

Gordon T. Richards,

Ariana S. Cooper,

Donald P. Schneider,

D. E. vanden Berk,

Sebastian Jester,

J. Brinkmann,

G. Szokoly

Publication year - 2004

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/423291

Subject(s) - quasar , astrophysics , physics , redshift , sky , photometry (optics) , astronomy , ovv quasar , galaxy , stars

We explore the form of extragalactic reddening toward quasars using a sampleof 9566 quasars with redshifts 0 0.1; less than 1% have E_{B-V} > 0.2, where the extinction isrelative to quasars with modal colors. Reddening is uncorrelated with thepresence of intervening narrow-line absorption systems, but reddened quasarsare much more likely to show narrow absorption at the redshift of the quasarthan are unreddened quasars. Thus the reddening towards quasars is dominated bySMC-like dust at the quasar redshift.Comment: 29 pages including 8 figures. AJ, September 2004 issu

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