J/MNRAS/399/1206 SWIRE/SDSS quasars. II. Type 2 AGN (Hatziminaoglou+, 2009)
Properties of dusty tori in active galactic nuclei.
II. Type 2 AGN.
Hatziminaoglou E., Fritz J., Jarrett T.H.
<Mon. Not. R. Astron. Soc., 399, 1206-1222 (2009)>
=2009MNRAS.399.1206H 2009MNRAS.399.1206H
ADC_Keywords: QSOs; Active gal. nuclei ; Photometry, infrared
Keywords: galaxies: active - quasars: general - galaxies: starburst -
infrared: general
Abstract:
This paper is the second part of a work investigating the properties
of dusty tori in active galactic nuclei (AGN) by means of
multicomponent spectral energy distribution (SED) fitting. It focuses
on low-luminosity, low-redshift (z≤0.25) AGN selected among emission
line galaxies in the overlapping regions between Spitzer Wide-area
Infrared Extragalactic Survey (SWIRE) and Sloan Digital Sky Survey
Data Release 4 as well as X-ray, radio and mid-infrared selected type
2 AGN samples from the literature. The available multiband photometry
covers the spectral range from the u band up to 160um. Using a
standard chi2 minimization, the observed SED of each object is fit
to a set of multicomponent models comprising a stellar component, a
high optical depth (tau9.7≥1.0) torus and cold emission from a
starburst (SB). The torus components assigned to the majority of the
objects were those of the highest optical depth of our grid of models
(tau9.7=10.0). The contribution of the various components (stars,
torus, SB) is reflected in the position of the objects on the Infrared
Array Camera (IRAC) colour diagram, with star-, torus- and
SB-dominated objects occupying specific areas of the diagrams and
composite objects lying in between.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 420 *SDSS names, coordinates, redshifts, emission-line
properties and stellar masses for the 420 objects
table2.dat 105 420 Spitzer fluxes of the sample presented in Table 1
table3.dat 66 92 *COSMOS names, coordinates, redshifts and
classification type for COSMOS type 2 AGN sample,
table4.dat 101 92 Spitzer fluxes of the sample presented in Table 3
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Note on table1.dat: SDSS sample for objects overlapping the SWIRE fields
and the narrow-emission-line object catalogue from Kauffmann et al.
(2003MNRAS.346.1055K 2003MNRAS.346.1055K).
Note on table3.dat: COSMOS sample from Trump et al. 2007
(Cat. J/ApJS/172/383).
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See also:
J/ApJS/172/383 : AGN candidates in the COSMOS field (Trump+, 2007)
J/MNRAS/386/1252 : SWIRE/SDSS quasars (Hatziminaoglou+, 2008)
J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number (within the table)
5 A1 --- n_Seq [X] Object used in analysis (1)
7- 10 A4 --- --- [SDSS]
12- 30 A19 --- SDSS SDSS name (JHHMMSS.ss+DDMMSS.s)
32- 41 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
43- 51 F9.6 deg DEdeg Declination in decimal degrees (J2000)
53- 57 F5.3 --- zsp Spectroscopic redshift
59- 65 F7.4 [Lsun] log[OIII]c ?=99.0 Extinction-corrected [OIII] luminosity
67- 73 F7.4 [---] log[OIII/Hb] ?=99.0 Relative intensity of [OIII]/Hβ
emission lines
75- 81 E7.4 [---] log[NII/Ha] Relative intensity of [NII]/Hα
emission lines
83- 89 F7.4 [Msun] logM* Stellar mass
91- 93 A3 --- AGN1 [AGN ] objects that were assigned with an AGN
component as a result of the fitting procedure
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Note (1): X = objects that have an adequate sampling of their SEDs and will
be used in the analysis
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number (within the table)
5- 10 A6 --- --- [COSMOS]
11 A1 --- --- [_]
12- 30 A19 --- COSMOS COSMOS name (JHHMMSS.ss+DDMMSS.s),
<[TIM2007] JHHMMSS.ss+DDMMSS.s> in Simbad
32- 33 I2 h RAh Right ascension (J2000)
35- 36 I2 min RAm Right ascension (J2000)
38- 42 F5.2 s RAs Right ascension (J2000)
44 A1 --- DE- Declination sign (J2000)
45- 46 I2 deg DEd Declination (J2000)
48- 49 I2 arcmin DEm Declination (J2000)
51- 54 F4.1 arcsec DEs Declination (J2000)
56- 62 F7.5 --- z Redshift
64- 66 A3 --- Type QSO type (1)
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Note (1): Type as follows:
q2 = type 2 AGN
q2e = hybrid, type 2s with a galaxy component
q2? = questionable classification
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Byte-by-byte Description of file: table[24].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number (within the table)
5- 11 F7.2 uJy F3.6 ?=-99.0 Flux in Spitzer/IRAC 3.6um
13- 18 F6.2 uJy e_F3.6 ?=-99.0 rms uncertainty on F3.6
20- 26 F7.2 uJy F4.5 ?=-99.0 Flux in Spitzer/IRAC 4.5um
28- 33 F6.2 uJy e_F4.5 ?=-99.0 rms uncertainty on F4.5
35- 41 F7.2 uJy F5.8 ?=-99.0 Flux in Spitzer/IRAC 5.8
43- 48 F6.2 uJy e_F5.8 ?=-99.0 rms uncertainty on F5.8
50- 57 F8.2 uJy F8.0 ?=-99.0 Flux in Spitzer/IRAC 8.0um
59- 64 F6.2 uJy e_F8.0 ?=-99.0 rms uncertainty on F8.0
66- 73 F8.2 uJy F24 ?=-99.0 Flux in Spitzer/MIPS 24um flux
75- 80 F6.2 uJy e_F24 ?=-99.0 rms uncertainty on F24
82- 90 F9.1 uJy F70 ?=-99.0 Flux in Spitzer/MIPS 70um (1)
93-101 F9.1 uJy F160 ?=-99.0 Flux in Spitzer/MIPS (160um) (1)
103-105 A3 --- AGN2 [AGN ] AGN, only in table2 (2)
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Note (1): The typical errors on the 70 and 160um fluxes are 10% of the fluxes.
Negative values indicate upper limits.
Note (2): AGN denotes the objects that, after the fitting, were found to
have an AGN component and on which all AGN-related analysis is based.
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History:
From electronic version of the journal
References:
Hatziminaoglou et al., Paper I 2008MNRAS.386.1252H 2008MNRAS.386.1252H, Cat. J/MNRAS/386/1252
(End) Patricia Vannier [CDS] 11-Aug-2011