Title of article
SDSS J0806+2006 AND SDSS J1353+1138: TWO NEW GRAVITATIONALLY LENSED QUASARS FROM THE SLOAN DIGITAL SKY SURVEY
Author/Authors
Becker، Robert H. نويسنده , , Schechter، Paul L. نويسنده , , Oguri، Masamune نويسنده , , Brinkmann، J. نويسنده , , Schneider، Donald P. نويسنده , , Kleinman، S. J. نويسنده , , Inada، Naohisa نويسنده , , Richards، Gordon T. نويسنده , , Gregg، Michael D. نويسنده , , Barentine، J. C. نويسنده , , Nitta، Atsuko نويسنده , , Snedden، Stephanie A. نويسنده , , York، Donald G. نويسنده , , Kochanek، Christopher S. نويسنده , , Brewington، Howard J. نويسنده , , Harvanek، Michael نويسنده , , LONG، DAN نويسنده , , KRZESINSKI، JUREK نويسنده , , WHITE، RICHARD L. نويسنده , , JR.، ERIC H. NEILSEN, نويسنده , , KAWANO، YOZO نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
-1933
From page
1934
To page
0
Abstract
We report the discoveries of two two-image gravitationally lensed quasars selected from the Sloan Digital Sky Survey: SDSS J0806+2006 at zs = 1.540 and SDSS J1353+1138 at zs = 1.629 with image separations of (delta)(theta)=1".40 and (delta)(theta)=1".41 , respectively. Spectroscopic and optical/near-infrared imaging follow-up observations show that the quasar images have identical redshifts and possess extended objects between the images that are likely to be lens galaxies at zl ~0.6 in SDSS J0806+2006 and zl ~0.3 in SDSS J1353+1138. The field of SDSS J0806+2006 contains several nearby galaxies that may significantly perturb the system, and SDSS J1353+1138 has an extra component near its Einstein ring that is probably a foreground star. Simple mass models with reasonable parameters reproduce the quasar positions and fluxes of both systems.
Keywords
quasars: individual (SDSS J080623.70+200631.9, SDSS J135306.35+113804.8) , gravitational lensing
Journal title
Astronomical Journal
Serial Year
2006
Journal title
Astronomical Journal
Record number
116768
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