J/ApJS/219/18 LIRAS: LoCuSS IR AGN survey (Xu+, 2015)
A Herschel study of 24µm-selected AGNs and their host galaxies.
Xu L., Rieke G.H., Egami E., Pereira M.J., Haines C.P., Smith G.P.
<Astrophys. J. Suppl. Ser., 219, 18 (2015)>
=2015ApJS..219...18X 2015ApJS..219...18X (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Photometry, infrared ; Redshifts ;
Spectroscopy ; X-ray sources
Keywords: galaxies: active; infrared: galaxies; quasars: general
Abstract:
We present a sample of 290 24µm-selected active galactic nuclei
(AGNs) mostly at z∼0.3-2.5, within 5.2°2 distributed as 25'x25'
fields around each of 30 galaxy clusters in the Local Cluster
Substructure Survey. The sample is nearly complete to 1mJy at 24µm,
and has a rich multiwavelength set of ancillary data; 162 are detected
by Herschel. We use spectral templates for AGNs, stellar populations,
and infrared (IR) emission by star-forming galaxies to decompose the
spectral energy distributions (SEDs) of these AGNs and their host
galaxies, and estimate their star formation rates, AGN luminosities,
and host galaxy stellar masses. The set of templates is relatively
simple: a standard Type-1 quasar template; another for the
photospheric output of the stellar population; and a far-infrared
star-forming template. For the Type-2 AGN SEDs, we substitute
templates including internal obscuration, and some Type-1 objects
require a warm component (T≳50K). The individually Herschel-detected
Type-1 AGNs and a subset of 17 Type-2 AGNs typically have luminosities
>1045erg/s, and supermassive black holes of ∼3x108M☉
emitting at ∼10% of the Eddington rate. We find them in about twice
the numbers of AGNs identified in SDSS data in the same fields, i.e.,
they represent typical high-luminosity AGNs, not an IR-selected
minority. These AGNs and their host galaxies are studied further in an
accompanying paper.
Description:
Local Cluster Substructure Survey (LoCuSS) is a large survey of
X-ray-luminous galaxy clusters at z=0.15-0.3 (e.g., Smith et al.
2010A&A...518L..18S 2010A&A...518L..18S). This paper exploits the extensive LoCuSS
multiwavelength data set for 30 clusters, which includes data from
Chandra, GALEX, SUBARU, United Kingdom IR Telescope (UKIRT),
Spitzer/MIPS, and Herschel.
Each cluster field was observed at 24um between 2007 November and 2008
November with MIPS on Spitzer (PID: 40872; PI: G.P. Smith).
Our Herschel data were taken between 2009 December 22 and 2011 October
10 (LoCuSS Herschel Key Programme, Smith et al. 2010A&A...518L..18S 2010A&A...518L..18S).
Each cluster field was observed with both the Photodetector Array
Camera and Spectrometer (PACS) at 100 and 160um, and the Spectral and
Photometric Imaging Receiver (SPIRE) at 250, 350, and 500um.
Near-infrared (NIR) images of 26 of the 30 cluster fields were
obtained with WFCAM at J- and K-bands on the 3.8m UKIRT in service
mode over multiple semesters starting in 2008 March.
We use spectra from the Arizona Cluster Redshift Survey (ACReS;
M. J. Pereira et al. 2015, in preparation), a long-term spectroscopic
program to observe the fields of the 30 galaxy clusters with
MMT/Hectospec (wide wavelength range (3650-9200Å) at 6.2Å
resolution (R=1000)).
Twenty-one of the thirty clusters were observed with Chandra in the I
mode of the ACIS-I. Seven more were observed with the ACIS-S. See
section 2.5 for further details.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 125 107 Fluxes of the 24um-selected Herschel-detected
type-1 AGN sample
table4.dat 85 98 Fluxes of 24um-selected Herschel-non-detected
type-1 AGN Sample
table5.dat 109 107 Redshifts, luminosities, broad emission line widths,
black hole masses, and stellar masses for the
Herschel-detected type-1 sources
table6.dat 125 55 Fluxes of the 24um-selected Herschel-detected
type-2 AGN sample
table7.dat 85 30 Fluxes of 24um-selected Herschel-non-detected
type-2 AGN Sample
table8.dat 68 55 Redshifts and derived parameters for the
Herschel-detected type-2 sources
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See also:
VI/139 : Herschel Observation Log (Herschel Science Centre, 2013)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
J/ApJ/801/97 : GOODS-S + UDS stellar mass cat. from CANDELS (Santini+, 2015)
J/ApJS/214/23 : IR spectra and photometry of z<0.5 quasars (Shi+, 2014)
J/ApJS/206/4 : SED & bolometric corrections for QSOs (Krawczyk+, 2013)
J/ApJ/757/13 : IR SEDs of 24um z∼0.3-3 galaxies (Sajina+, 2012)
J/A+A/541/A118 : AGN-Host Galaxy Connection (Povic+, 2012)
J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011)
J/ApJS/190/233 : Spectroscopy & abundances of SINGS galaxies (Moustakas+, 2010)
J/ApJ/708/137 : Broad-line AGNs in zCOSMOS survey (Merloni+, 2010)
J/ApJ/699/800 : Mass functions of active black holes (Vestergaard+, 2009)
J/ApJ/692/556 : Star forming galaxy templates (Rieke+, 2009)
J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)
J/ApJ/680/939 : Optical spectra of 24um galaxies in COSMOS. I. (Caputi+, 2008)
J/ApJ/680/130 : Mid-IR colors of AGNs in the MUSYC ECDF-S (Cardamone+, 2008)
J/AJ/135/928 : The black hole-bulge relationship (Shen+, 2008)
J/ApJ/653/127 : 9.7um silicate features in AGNs (Shi+, 2006)
J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)
J/ApJS/164/81 : Spectrophotometry of nearby galaxies (Moustakas+, 2006)
J/ApJS/161/9 : X-ray survey of the NDWFS Bootes field (Kenter+, 2005)
J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004)
J/AJ/126/2125 : SDSS candidate type II quasars (Zakamska+, 2003)
J/ApJS/95/1 : Atlas of Quasar Energy Distributions (Elvis+ 1994)
http://www.sr.bham.ac.uk/locuss/ : LoCuSS home page
http://www.sdss.org/ : SDSS home page
Byte-by-byte Description of file: table[36].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Running sequence number
5- 23 A19 --- LIRAS LIRAS source designation (JHHMMSS.ss+DDMMSS.s)
25- 35 F11.7 deg RAdeg Right ascension in decimal degrees (J2000)
37- 47 F11.7 deg DEdeg Declination in decimal degrees (J2000)
49- 53 F5.3 mJy FJ [0.01/3.3] UKIRT/WFCAM J-band flux density
55- 59 F5.3 mJy FK [0.01/3.7] UKIRT/WFCAM K-band flux density
61- 64 F4.2 mJy F3.4 [0/3.2] WISE 3.4um flux density
66- 69 F4.2 mJy F4.6 [0/4.5] WISE 4.6um flux density
71- 75 F5.2 mJy F12 [0/11.5] WISE 12um flux density
77- 81 F5.2 mJy F24 [1/20] Spitzer/MIPS 24um flux density
83 A1 --- l_F100 3σ upper limit flag on F100
85- 90 F6.2 mJy F100 [10.8/568]? Herschel/PACS 100um flux density
92 A1 --- l_F160 3σ upper limit flag on F160
94- 99 F6.2 mJy F160 [11.9/549]? Herschel/PACS 160um flux density
101 A1 --- l_F250 3σ upper limit flag on F250
103-108 F6.2 mJy F250 [8.5/298] Herschel/SPIRE 250um flux density
110 A1 --- l_F350 3σ upper limit flag on F350
112-117 F6.2 mJy F350 [8.6/150] Herschel/SPIRE 350um flux density
119 A1 --- l_F500 3σ upper limit flag on F500
121-125 F5.2 mJy F500 [11.5/62.1] Herschel/SPIRE 500um flux density
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Byte-by-byte Description of file: table[47].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Running sequence number
4- 22 A19 --- LIRAS LIRAS source designation (JHHMMSS.ss+DDMMSS.s)
24- 34 F11.7 deg RAdeg Right ascension in decimal degrees (J2000)
36- 46 F11.7 deg DEdeg Declination in decimal degrees (J2000)
48- 52 F5.3 --- z [0.1/5.1] Redshift
54- 58 F5.3 mJy FJ [0.009/0.9] UKIRT/WFCAM J-band flux density
60- 64 F5.3 mJy FK [0.01/1.3] UKIRT/WFCAM K-band flux density
66- 69 F4.2 mJy F3.4 [0/2.1] WISE 3.4um flux density
71- 74 F4.2 mJy F4.6 [0/3.4] WISE 4.6um flux density
76- 79 F4.2 mJy F12 [0/7.9] WISE 12um flux density
81- 85 F5.2 mJy F24 [1/19.9] Spitzer/MIPS 24um flux density
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Seq Running sequence number
5- 23 A19 --- LIRAS LIRAS designation (JHHMMSS.ss+DDMMSS.s)
25- 29 F5.3 --- z [0.1/4.5] Redshift
31- 35 F5.2 10+10Lsun LX [0.05/48.2]? Chandra 0.5-8keV X-ray luminosity
37- 41 F5.2 10+11Lsun LB [0/16.8] Subaru/SuprimeCam B-band luminosity
43- 48 F6.2 10+11Lsun LIR [0.4/322.1] Total IR luminosity
50- 54 F5.2 10+11Lsun LSF [0/89.8] SF IR luminosity
56- 60 F5.2 --- dLSF [-1/0]? Decrease in the fraction of the
SF IR luminosity (1)
62- 67 F6.2 10+11Lsun Lagn [0.1/322.1] AGN IR luminosity
69- 73 F5.2 10+11Lsun Lwarm [7.5/70.8]? Warm component luminosity if warm
component required in the SED fit
75- 80 F6.2 --- dLw [0/211.5]? Warm component luminosity if warm
component is a d.o.f. in the SED fit (2)
82- 87 A6 --- Line Line identification
89 A1 --- l_FWHM Limit flag on FWHM
91- 95 I5 km/s FWHM [1037/17310] Broad emission line FWHM
97-102 F6.2 10+8Msun BHM [0.1/123.8]? Black hole mass (3)
104-108 F5.2 10+11Msun M* ? Host galaxy stellar mass estimated from
the local BHM/M* ratio unless flagged
109 A1 --- f_M* [d] d: derived from K-band luminosity
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Note (1): The decrease in the fraction of the SF IR luminosities if we add the
warm component as a degree of freedom in the SED decomposition
procedure. For the case that the warm component is required in order
to obtain good SED fits, we do not provide this decrease fraction.
Note (2): The warm component luminosities if we add the warm component as a
degree of freedom in the SED decomposition procedure. For some
sources, the warm component is required in order to obtain good SED
fits. The warm component luminosities for such sources are provided
in Lwarm column.
Note (3): Some AGNs are broad absorption line quasars, and their broad emission
line FWHM is above 1200km/s, but is not well constrained. Some AGNs
have low S/N optical spectra, and the emission line fitting is not
good enough to estimate the black hole mass.
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Seq [1/55] Running sequence number
5- 23 A19 --- LIRAS LIRAS source designation (JHHMMSS.ss+DDMMSS.s)
25- 29 A5 --- f_LIRAS Flag on LIRAS (1)
31- 35 F5.3 --- z [0.05/0.8] Redshift
37- 41 F5.2 10+11Lsun LIR [0.1/15.2] Total IR luminosity (LSF+LIRa)
43- 47 F5.2 10+11Lsun LSF [0.09/13] Star formation (SF) IR luminosity
(LSFIR_)
49- 52 F4.2 10+11Lsun LIRa [0/2.5] AGN IR luminosity (LAGN,IR)
54- 58 F5.2 10+11Lsun Lagn [0.01/18.8] AGN total luminosity
60- 63 F4.2 10+11Msun M* [0.3/3.2]? Stellar mass
65- 68 A4 --- Type Morphological type (2)
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Note (1): Flag as follows:
a = High-luminosity subsample (HLS).
b = AGN-dominated at 24um.
c = Comparison Sample (see text).
Note (2): Type as follows:
S = spiral,
E = elliptical,
C = too compact to classify,
I = interacting
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 24-Sep-2015