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The Sloan Digital Sky Survey Reverberation Mapping project: : no evidence for evolution in the M•-σ* Relation to z~1

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Date
01/06/2015
Author
Shen, Yue
Greene, Jenny E.
Ho, Luis C.
Brandt, W. N.
Denney, Kelly D.
Horne, Keith Douglas
Jiang, Linhua
Kochanek, Christopher S.
McGreer, Ian D.
Merloni, Andrea
Peterson, Bradley M.
Petitjean, Patrick
Schneider, Donald P.
Schulze, Andreas
Strauss, Michael A.
Tao, Charling
Trump, Jonathan R.
Pan, Kaike
Bizyaev, Dmitry
Funder
Science & Technology Facilities Council
Science & Technology Facilities Council
Grant ID
ST/M001296/1
ST/J001651/1
Keywords
Black hole physics
Galaxies: active
Quasars: general
QB Astronomy
QC Physics
Nuclear and High Energy Physics
3rd-DAS
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Abstract
We present host stellar velocity dispersion measurements for a sample of 88 broad-line quasars at 0.1 <z <1 (46 at z > 0.6) from the Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) project. High signal-to-noise ratio coadded spectra (average S/N ≈ 30 per 69 km s-1 pixel) from SDSS-RM allowed for the decomposition of the host and quasar spectra and for measurements of the host stellar velocity dispersions and black hole (BH) masses using the single-epoch (SE) virial method. The large sample size and dynamic range in luminosity (L5100 = 1043.2-44.7 ergs-1) lead to the first clear detection of a correlation between SE virial BH mass and host stellar velocity dispersion far beyond the local universe. However, the observed correlation is significantly flatter than the local relation, suggesting that there are selection biases in high-z luminosity-threshold quasar samples for such studies. Our uniform sample and analysis enable an investigation of the redshift evolution of the M-σ∗ relation relatively free of caveats by comparing different samples/analyses at disjoint redshifts. We do not observe evolution of the M-σ∗ relation in our sample up to z ∼ 1, but there is an indication that the relation flattens toward higher redshifts. Coupled with the increasing threshold luminosity with redshift in our sample, this again suggests that certain selection biases are at work, and simple simulations demonstrate that a constant M-σ∗ relation is favored to z ∼ 1. Our results highlight the scientific potential of deep coadded spectroscopy from quasar monitoring programs, and offer a new path to probe the co-evolution of BHs and galaxies at earlier times.
Citation
Shen , Y , Greene , J E , Ho , L C , Brandt , W N , Denney , K D , Horne , K D , Jiang , L , Kochanek , C S , McGreer , I D , Merloni , A , Peterson , B M , Petitjean , P , Schneider , D P , Schulze , A , Strauss , M A , Tao , C , Trump , J R , Pan , K & Bizyaev , D 2015 , ' The Sloan Digital Sky Survey Reverberation Mapping project: no evidence for evolution in the M•-σ* Relation to z~1 ' , Astrophysical Journal , vol. 805 , no. 2 . https://doi.org/10.1088/0004-637X/805/2/96
Publication
Astrophysical Journal
Status
Peer reviewed
DOI
https://doi.org/10.1088/0004-637X/805/2/96
ISSN
0004-637X
Type
Journal article
Rights
© 2015. The American Astronomical Society. All rights reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1088/0004-637X/805/2/96
Description
Support for the work of Y.S. was provided by NASA through Hubble Fellowship grant number HST-HF-51314, awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. L.C.H. acknowledges support from the Chinese Academy of Sciences through grant No. XDB09030102 (Emergence of Cosmological Structures) from the Strategic Priority Research Program and from the National Natural Science Foundation of China through grant No. 11473002. W.N.B. acknowledges support from NSF grant AST-1108604. B.M.P. acknowledges support from the NSF through grant AST-1008882.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/8205

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