J/ApJ/819/L27 Stellar masses of optical & IR QSO hosts (Zhang+, 2016)
Distributions of quasar hosts on the galaxy main sequence plane.
Zhang Z., Shi Y., Rieke G.H., Xia X., Wang Y., Sun B., Wan L.
<Astrophys. J., 819, L27 (2016)>
=2016ApJ...819L..27Z 2016ApJ...819L..27Z (SIMBAD/NED BibCode)
ADC_Keywords: QSOs ; Redshifts ; Galaxies, IR ; Morphology
Keywords: galaxies: active; galaxies: starburst; infrared: galaxies
Abstract:
The relation between star formation rates (SFRs) and stellar masses,
i.e., the galaxy main sequence, is a useful diagnostic of galaxy
evolution. We present the distributions relative to the main sequence
of 55 optically selected PG and 12 near-IR-selected Two Micron All Sky
Survey (2MASS) quasars at z≤0.5. We estimate the quasar host stellar
masses from Hubble Space Telescope or ground-based AO photometry, and
the SFRs through the mid-infrared aromatic features and far-IR
photometry. We find that PG quasar hosts more or less follow the main
sequence defined by normal star-forming galaxies while 2MASS quasar
hosts lie systematically above the main sequence. PG and 2MASS quasars
with higher nuclear luminosities seem to have higher specific SFRs
(sSFRs), although there is a large scatter. No trends are seen between
sSFRs and SMBH masses, Eddington ratios, or even morphology types
(ellipticals, spirals, and mergers). Our results could be placed in an
evolutionary scenario with quasars emerging during the transition from
ULIRGs/mergers to ellipticals. However, combined with results at
higher redshift, they suggest that quasars can be widely triggered in
normal galaxies as long as they contain abundant gas and have ongoing
star formation.
Description:
This study builds on that of Shi et al. (2014, J/ApJS/214/23), who
presented infrared spectroscopic and photometric observations of
Palomar-Green (PG; Schmidt & Green 1983ApJ...269..352S 1983ApJ...269..352S) and 2MASS
quasars (Cutri et al. 2001ASPC..232...78C 2001ASPC..232...78C; Smith et al. 2002,
J/ApJ/569/23) and used them to derive SFRs. We complement these
results by estimating the stellar masses using the optical/near-IR
photometric measurements of quasar hosts from the literature based on
Hubble Space Telescope (HST) and ground-based adaptive optics (AO)
observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 103 94 Photometry of Palomar-Green (PG) & 2MASS sample
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See also:
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/ApJS/219/18 : LIRAS: LoCuSS IR AGN survey (Xu+, 2015)
J/ApJS/214/23 : IR spectra and photometry of z<0.5 quasars (Shi+, 2014)
J/ApJ/720/368 : Color-magnitude relations of galaxies in CDFs (Xue+, 2010)
J/ApJ/701/587 : A deep HST H-band imaging survey. II. QSOs (Veilleux+, 2009)
J/ApJ/692/556 : Star forming galaxy templates (Rieke+, 2009)
J/ApJS/182/628 : Spitzer quasar and ULIRG evolution study (Veilleux+, 2009)
J/MNRAS/383/1513 : 2MASS, SDSS and FIRST fluxes of QSOs (Labita+, 2008)
J/ApJ/667/673 : FIRST-2MASS red quasar survey (Glikman+, 2007)
J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007)
J/ApJ/625/78 : QSOs properties (Hao+, 2005)
J/ApJS/143/277 : IRAS 1Jy sample of ultraluminous galaxies. I. (Kim+, 2002)
J/ApJ/569/23 : Optical polarisation of 2MASS QSOs (Smith+, 2002)
J/ApJS/95/1 : Atlas of Quasar Energy Distributions (Elvis+ 1994)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 22 A22 --- Name Quasar identifier
24- 28 F5.3 --- z [0.05/0.5] Spectroscopic redshift
30- 33 A4 --- Morph Morphology (1)
35- 40 A6 --- Inst Instrument used (2)
42- 43 A2 --- Band Photometric magnitude band (VIJHK or K')
45- 50 F6.2 mag Mhost [-26/-21.6]? Absolute host galaxy magnitude
in Band (3)
52- 57 F6.2 mag Mnuc [-28/-17.9]? Absolute galaxy nucleous magnitude
in Band (3)
59- 63 F5.2 mag mtot [12.3/15.5]? Total apparent galaxy magnitude
in Band
65- 69 F5.3 --- frac [0.05/0.3]? Host fraction
71- 74 F4.2 mag e_mtot [0.01/1] Uncertainty in mtot
76- 79 F4.2 kpc Reff [0.2/5.6]? Effective radius
81- 84 A4 --- Ref Reference(s) (4)
86- 90 F5.2 [Msun] logM2 [10.6/11.5]? Second value of mass (5)
92- 96 F5.2 [Msun] logM* [10.4/11.8]? Log stellar mass from this paper
98 A1 --- l_SFR Limit flag on SFR
99-103 F5.2 Msun/yr SFR [-0.09/2.5]? Star Formation Rate (6)
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Note (1): Morphology type as follows:
E = Elliptical;
S = Spiral;
B+D = Bulge+Disk;
Dp = Disk present;
? = Ambiguous.
Note (2): Instrument used for HST observations ("NICMOS" or "WFPC2") or
a "*" for ground-based AO observations.
Note (3): Rescaled into the same cosmology,
i.e. H0=70km/s/Mpc, ΩM=0.3 and ΩΛ=0.7.
Note (4): Reference as follows:
1 = McLeod and McLeod (2001ApJ...546..782M 2001ApJ...546..782M);
2 = Hamilton et al. (2002ApJ...576...61H 2002ApJ...576...61H);
3 = Marble et al. (2003ApJ...590..707M 2003ApJ...590..707M);
4 = Hamilton et al. (2008ApJ...678...22H 2008ApJ...678...22H);
5 = Veilleux et al. (2009, J/ApJ/701/587);
6 = Shang et al. (2011ApJS..196....2S 2011ApJS..196....2S);
7 = Guyon et al. (2006ApJS..166...89G 2006ApJS..166...89G);
Note (5): This second mass is derived from optical photometry with
two mass-to-light ratios (see text).
Note (6): From Shi et al. (2014, J/ApJS/214/23).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 30-May-2016