J/ApJ/811/91 SDSS-RM project: z<1 QSO host galaxies (Matsuoka+, 2015)
The Sloan Digital Sky Survey Reverberation Mapping project:
post-starburst signatures in quasar host galaxies at z<1.
Matsuoka Y., Strauss M.A., Shen Y., Brandt W.N., Greene J.E., Ho L.C.,
Schneider D.P., Sun M., Trump J.R.
<Astrophys. J., 811, 91 (2015)>
=2015ApJ...811...91M 2015ApJ...811...91M (SIMBAD/NED BibCode)
ADC_Keywords: QSOs ; Redshifts ; Spectroscopy ; Velocity dispersion ; Surveys
Keywords: galaxies: active; galaxies: evolution; galaxies: nuclei;
galaxies: stellar content; quasars: general;
quasars: supermassive black holes
Abstract:
Quasar host galaxies are key for understanding the relation between
galaxies and the supermassive black holes (SMBHs) at their centers. We
present a study of 191 broad-line quasars and their host galaxies at
z<1 using high signal-to-noise ratio (S/N) spectra produced by the
Sloan Digital Sky Survey Reverberation Mapping project. Clear
detection of stellar absorption lines allows a reliable decomposition
of the observed spectra into nuclear and host components, using
spectral models of quasar and stellar radiations as well as emission
lines from the interstellar medium. We estimate age, mass M*, and
velocity dispersion σ* of the host stars, the star formation
rate (SFR), quasar luminosity, and SMBH mass M{dot} for each object.
The quasars are preferentially hosted by massive galaxies with
M*∼1011M☉ characterized by stellar ages around 1 billion yr,
which coincides with the transition phase of normal galaxies from the
blue cloud to the red sequence. The host galaxies have relatively low
SFRs and fall below the main sequence of star-forming galaxies at
similar redshifts. These facts suggest that the hosts have experienced
an episode of major star formation sometime in the past 1 billion yr,
which was subsequently quenched or suppressed. The derived
M{dot}-σ* and M{dot}-M* relations agree with our past
measurements and are consistent with no evolution from the local
universe. The present analysis demonstrates that reliable measurements
of stellar properties of quasar host galaxies are possible with
high-S/N fiber spectra, which will be acquired in large numbers with
future powerful instruments such as the Subaru Prime Focus Spectrograph.
Description:
We use the data acquired in the Sloan Digital Sky Survey Reverberation
Mapping (SDSS-RM) project, in which a single spectroscopic field was
repeatedly observed to explore the variability of quasars. The full
technical details of the project are found in Shen et al. (2015,
J/ApJS/216/4).
SDSS-RM was conducted during the dark/gray time in the final season
(2013-2014) of the SDSS-III Baryon Oscillation Spectroscopic Survey
(BOSS; Dawson et al. 2013AJ....145...10D 2013AJ....145...10D). The target field (centered
at RAJ2000=14:14:49.00, DEJ2000=+53:05:00.0) coincides with the
Panoramic Survey Telescope & Rapid Response System 1 (Pan-STARRS 1;
Kaiser et al. 2010SPIE.7733E..0EK) Medium Deep Field MD07, which lies
within the Canada-France-Hawaii Telescope Legacy Survey W3 field.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 105 191 Derived properties of the quasar host galaxies
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See also:
J/ApJ/805/96 : SDSS-RM project: velocity dispersions of QSOs (Shen+, 2015)
J/AJ/149/203 : Reddening of ∼35000 quasars from SDSS (Krawczyk+, 2015)
J/ApJS/216/4 : SDSS-RM project: technical overview (Shen+, 2015)
J/ApJS/208/24 : Spitzer MIR AGN survey. I. (Lacy+, 2013)
J/MNRAS/430/60 : Suzaku view of highly ionized outflows in AGN (Gofford+, 2013)
J/ApJ/763/133 : Broad-line AGN with host galaxy colors (Trump+, 2013)
J/ApJ/757/51 : FIRST-2MASS dust-reddened QSO spectra (Glikman+, 2012)
J/ApJ/753/125 : NIR spectroscopy follow-up of 60 SDSS-DR7 QSOs (Shen+, 2012)
J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/ApJ/720/368 : Color-magnitude relations of galaxies in CDFs (Xue+, 2010)
J/ApJ/711/284 : Galaxy Zoo: AGN host galaxies (Schawinski+, 2010)
J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)
J/ApJ/665/990 : SDSS DR2 BAL QSOs (Ganguly+, 2007)
J/ApJS/165/1 : BAL QSOs from SDSS DR3 (Trump+, 2006)
J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)
J/AJ/131/84 : AGNs and host galaxies information (Vanden Berk+, 2006)
J/AJ/126/2125 : SDSS candidate type II quasars (Zakamska+, 2003)
J/AJ/125/1817 : SDSS Early-Type Galaxies Catalog (Bernardi+, 2003)
J/ApJ/269/352 : Quasar evolution (Schmidt+, 1983)
http://www.sdss3.org/ : SDSS-III home page
http://www.sdssrm.org/ : SDSS-RM home page
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- RMID [9/848] Identification number
5- 22 A18 --- SDSS SDSS identifier (HHMMSS.ss+DDMMSS.s; J2000)
24- 28 F5.3 --- z [0.1/1] Redshift
30- 34 F5.3 --- f* [0/1] Stellar fraction of flux at 400nm
36- 40 F5.3 --- e_f* [0/0.07] Uncertainty in f*
42- 46 F5.2 Gyr t* [0.03/10]? Stellar age
48- 51 F4.2 Gyr e_t* [0.01/2.2]? Uncertainty in t*
53- 57 F5.2 [Msun] logM* [9.7/12.7]? Log stellar mass
relative to solar
59- 62 F4.2 [Msun] e_logM* [0/0.3]? Uncertainty in logM*
64- 68 F5.2 Msun/yr SFR [0/14.2]? Star Formation Rate
70- 73 F4.2 Msun/yr e_SFR [0/4.1]? Uncertainty in SFR
75- 79 F5.1 km/s sigma* [86.9/356.2]? Stellar velocity dispersion
81- 84 F4.1 km/s e_sigma* [0.3/80]? Uncertainty in sigma*
86- 90 F5.2 [10-7W] logLOIII [39.4/43.5] Log [O III] luminosity; erg/s
92- 95 F4.2 [10-7W] e_logLOIII [0/0.4] Uncertainty in logLOIII
97-100 F4.2 [Msun] logMBH [6.8/9.2]? Log black hole mass
relative to solar
102-105 F4.2 [Msun] e_logMBH [0.02/1.3]? Uncertainty in logMBH
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Jan-2016