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in creator/contributor: "Falco, Emilio E."  
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The SDSS Discovery of a Strongly Lensed Post-Starburst Galaxy at z=0.766

Description: We present the first result of a survey for strong galaxy-galaxy lenses in Sloan Digital Sky Survey (SDSS) images. SDSS J082728.70+223256.4 was selected as a lensing candidate using selection criteria based on the color and positions of objects in the SDSS photometric catalog. Follow-up imaging and spectroscopy showed this object to be a lensing system. The lensing galaxy is an elliptical at z = 0.349 in a galaxy cluster. The lensed galaxy has the spectrum of a post-starburst galaxy at z = 0.76… more
Date: September 30, 2008
Creator: Shin, Min-Su; Strauss, Michael A.; Oguri, Masamune; Inada, Naohisa; Falco, Emilio E.; Broadhurst, Tom et al.
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Partner: UNT Libraries Government Documents Department
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Spectroscopic Confirmation of the Fifth Image of SDSS J1004+4112 and Implications for the M_BH-sigma_* Relation at z=0.68

Description: We present the results of deep spectroscopy for the central region of the cluster lens SDSS J1004+4112 with the Subaru telescope. A secure detection of an emission line of the faint blue stellar object (component E) near the center of the brightest cluster galaxy (G1) confirms that it is the central fifth image of the lensed quasar system. In addition, we measure the stellar velocity dispersion of G1 to be {sigma}{sub *} = 352 {+-} 13 km s{sup -1}. We combine these results to obtain constraints… more
Date: August 15, 2008
Creator: Inada, Naohisa; Oguri, Masamune; Falco, Emilio E.; Broadhurst, Tom J.; Ofek, Eran O.; Kochanek, Christopher S. et al.
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Partner: UNT Libraries Government Documents Department
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The Third Image of the Large-Separation Lensed Quasar SDSS J1029+2623

Description: We identify a third image in the unique quasar lens SDSS J1029+2623, the second known quasar lens produced by a massive cluster of galaxies. The spectrum of the third image shows similar emission and absorption features, but has a redder continuum than the other two images which can be explained by differential extinction or microlensing. We also identify several lensed arcs. Our observations suggest a complicated structure of the lens cluster at z {approx} 0.6. We argue that the three lensed i… more
Date: February 22, 2008
Creator: Oguri, Masamune; Ofek, Eran O.; Inada, Naohisa; Morokuma, Tomoki; Falco, Emilio E.; Kochanek, Christopher S. et al.
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Partner: UNT Libraries Government Documents Department
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