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J/ApJ/841/76         Intrinsic far-IR SED of luminous AGNs         (Lyu+, 2017)

The intrinsic far-infrared continua of type-1 quasars. Lyu J., Rieke G.H. <Astrophys. J., 841, 76 (2017)> =2017ApJ...841...76L
ADC_Keywords: Active gal. nuclei ; QSOs ; Infrared sources ; Redshifts ; Energy distributions ; Models Keywords: galaxies: active ; infrared: galaxies ; quasars: general Abstract: The range of currently proposed active galactic nucleus (AGN) far-infrared templates results in uncertainties in retrieving host galaxy information from infrared observations and also undermines constraints on the outer part of the AGN torus. We discuss how to test and reconcile these templates. Physically, the fraction of the intrinsic AGN IR-processed luminosity compared with that from the central engine should be consistent with the dust-covering factor. In addition, besides reproducing the composite spectral energy distributions (SEDs) of quasars, a correct AGN IR template combined with an accurate library of star-forming galaxy templates should be able to reproduce the IR properties of the host galaxies, such as the luminosity-dependent SED shapes and aromatic feature strengths. We develop tests based on these expected behaviors and find that the shape of the AGN intrinsic far-IR emission drops off rapidly starting at ∼20µm and can be matched by an Elvis+ (1994, J/ApJS/95/1)-like template with a minor modification. Despite the variations in the near- to mid-IR bands, AGNs in quasars and Seyfert galaxies have remarkably similar intrinsic far-IR SEDs at λ∼20-100µm, suggesting a similar emission character of the outermost region of the circumnuclear torus. The variations of the intrinsic AGN IR SEDs among the type-1 quasar population can be explained by the changing relative strengths of four major dust components with similar characteristic temperatures, and there is evidence for compact AGN-heated dusty structures at sub-kiloparsec scales in the far-IR. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 64 24 Host galaxy IR properties of the 24 Palomar-Green quasars table4.dat 32 399 AGN intrinsic templates table5.dat 41 101 Properties of 101 SFGs in the GOALS sample
See also: J/ApJS/95/1 : Atlas of Quasar Energy Distributions (Elvis+ 1994) J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006) J/ApJ/653/127 : 9.7um silicate features in AGNs (Shi+, 2006) J/ApJ/666/806 : SED of Spitzer quasars (QUEST) (Netzer+, 2007) J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007) J/ApJ/656/770 : Mid-IR spectrum of star-forming galaxies (Smith+, 2007) J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008) J/ApJ/705/14 : Seyfert galaxies in the mid-IR (Deo+, 2009) J/ApJ/692/556 : Star forming galaxy templates (Rieke+, 2009) J/ApJ/714/1256 : Far-IR star formation rate indicators (Calzetti+, 2010) J/MNRAS/414/500 : Spitzer/IRS ATLAS project source (Hernan-Caballero+, 2011) J/ApJ/759/139 : Herschel+MIPS photom. of GOODS sources (Kirkpatrick+, 2012) J/ApJ/768/13 : FIR properties of SDSS type 1 quasars (Hanish+, 2013) J/ApJS/206/1 : Mid-IR properties of GOALS nearby LIRGs (Stierwalt+, 2013) J/MNRAS/439/1648 : Subarcsecond mid-infrared atlas of local AGN (Asmus+, 2014) J/A+A/565/A128 : Dust SED in HRS nearby galaxies (Ciesla+, 2014) J/ApJ/788/159 : 17 Seyfert 1 galaxies light curves (Koshida+, 2014) J/ApJS/214/23 : IR spectra and photometry of z<0.5 quasars (Shi+, 2014) J/ApJS/219/18 : LIRAS: LoCuSS IR AGN survey (Xu+, 2015) J/ApJ/824/70 : UV-FIR SED results of SDSS QSOs & their hosts (Dong+, 2016) J/MNRAS/458/4512 : Nearby Seyferts FIR emissions (Garcia-Gonzalez+, 2016) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- ID [4/81] Object ID (1) 5- 15 A11 --- Name Object name 17- 20 F4.2 --- z [0.03/0.4] Redshift 22 A1 --- l_FPAH-spec Upper limit flag on FPAH 23- 26 F4.2 10-13mW/m2 FPAH-spec [0.02/4.6] Flux, 11.3um aromatic feature, Shi+ (2014 J/ApJS/214/23); 28- 31 F4.2 10-13mW/m2 e_FPAH-spec ? Uncertainty in FPAH-spec 33- 37 F5.2 [Lsun] LR09-PAH [9.7/13] IR luminosity, best-matched Rieke+ (2009, J/ApJ/692/556) template (2) 39- 42 F4.2 --- cR09-PAH [0.2/1.4] Scaling factor, best-matched Rieke+ (2009, J/ApJ/692/556) template (2) 44- 47 F4.2 --- fIR-AGN AGN fractional contribution to the IR emission of each quasar 49- 52 F4.2 10-13mW/m2 FPAH-SED [0.1/9] Flux, 11.3um aromatic feature (3) 54- 58 F5.2 [Lsun] LR09-SED [9.7/12] Log IR luminosity, best-fitted Rieke+ (2009, J/ApJ/692/556) template (3) 60- 64 F5.2 [Lsun] Lhost-SED [10.1/12.3] Log host galaxy observed IR luminosity (3)
Note (1): See Table 2 in Lyu+ (2017ApJ...835..257L) for the list of the whole Palomar-Green sample. Note (2): Luminosities and ratio calculated from the best-matched Rieke+ (2009, J/ApJ/692/556) template based on the 11.3um aromatic feature luminosity. Note (3): Flux and luminosity values calculated from SED modeling.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 5 F5.2 [um] lambda [-1/3] Wavelength, logarithm 7- 11 F5.2 [Hz] nu [11.5/15.5] Frequency, logarithm 13- 18 F6.3 --- LogLNorm [-5.1/0.7] Log intrinsic AGN luminosity, normal quasars (1) 20- 25 F6.3 --- LogLHDD [-5/0.7] Log intrinsic AGN luminosity, hot-dust-deficient quasars (1) 27- 32 F6.3 --- LogLWDD [-4.9/0.7] Log intrinsic AGN luminosity, warm-dust-deficient quasars (1)
Note (1): The luminosities are normalized at 1.25 microns. For all the templates at lambda >100um, a modified black-body with temperature at 118K and dust emissivity 1.5 is scaled to match the observed SED. The 0.1-1.25um SEDs of the HDD and WDD templates are assumed to be the same as Elvis et al. (1994, J/ApJS/95/1).
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Name Object Name 18- 23 F6.4 --- zNED Redshift from NED 25- 28 F4.2 [Lsun] LogLPAH 11.3 aromatic emission luminosity, from the mid-IR spectrum 30- 34 F5.2 [Lsun] LogLIR Total IR luminosity, from Armus+ (2009PASP..121..559A) 36- 41 F6.4 --- fconv Luminosity conversion factor between LogL-PAH and LogL-IR
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 17-Jan-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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