Spectroscopic Confirmation of the Fifth Image of SDSS J1004+4112 and Implications for the M_BH-sigma_* Relation at z=0.68

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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 on the mass M{sub BH} of the putative black hole (BH) at the center ... continued below

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4 pages

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Inada, Naohisa; Oguri, Masamune; Falco, Emilio E.; Broadhurst, Tom J.; Ofek, Eran O.; Kochanek, Christopher S. et al. August 15, 2008.

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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 on the mass M{sub BH} of the putative black hole (BH) at the center of the inactive galaxy G1, and hence on the M{sub BH}-{sigma}{sub *} relation at the lens redshift z{sub l} = 0.68. From detailed mass modeling, we place an upper limit on the black hole mass, M{sub BH} < 2.1 x 10{sup 10} M{sub {circle_dot}} at 1{sigma} level (< 3.1 x 10{sup 10}M{sub {circle_dot}} at 3{sigma}), which is consistent with black hole masses expected from the local and redshift-evolved M{sub BH}-{sigma}{sub *} relations, M{sub BH} {approx} 10{sup 9}-10{sup 10} M{sub {circle_dot}}.

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4 pages

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  • Journal Name: Publications of the Astronomical Society of Japan

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  • Report No.: SLAC-PUB-13368
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 937182
  • Archival Resource Key: ark:/67531/metadc897306

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  • August 15, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 2, 2016, 12:29 p.m.

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Inada, Naohisa; Oguri, Masamune; Falco, Emilio E.; Broadhurst, Tom J.; Ofek, Eran O.; Kochanek, Christopher S. et al. Spectroscopic Confirmation of the Fifth Image of SDSS J1004+4112 and Implications for the M_BH-sigma_* Relation at z=0.68, article, August 15, 2008; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc897306/: accessed April 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.