J/ApJ/666/806 SED of Spitzer quasars (QUEST) (Netzer+, 2007)
Spitzer Quasar and ULIRG Evolution Study (QUEST).
II. The spectral energy distributions of Palomar-Green quasars.
Netzer H., Lutz D., Schweitzer M., Contursi A., Sturm E., Tacconi L.J.,
Veilleux S., Kim D.-C., Rupke D., Baker A.J., Dasyra K., Mazzarella J.,
Lord S.
<Astrophys. J., 666, 806-816 (2007)>
=2007ApJ...666..806N 2007ApJ...666..806N
ADC_Keywords: QSOs ; Galaxies, IR ; Spectroscopy
Keywords: galaxies: active - galaxies: starburst - infrared: galaxies -
quasars: emission lines
Abstract:
This is the second paper studying the QSOs in the Spitzer QUEST
sample. Previously we presented new PAH measurements and argued that
most of the observed far-infrared (FIR) radiation is due to
star-forming activity. Here we present spectral energy distributions
(SEDs) by supplementing our data with optical, NIR, and FIR
observations. We define two subgroups, of "weak FIR" and "strong FIR"
QSOs, and a third group of FIR nondetections. Assuming a starburst
origin for the FIR, we obtain "intrinsic" active galactic nucleus
(AGN) SEDs by subtracting a starburst template from the mean SEDs. The
resulting SEDs are remarkably similar for all groups.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 77 29 QSO sample and supplementary data
table2.dat 18 354 Average QSO SEDs
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See also:
J/AJ/131/1923 : Known quasars in the QUEST Variability Survey (Rengstorf+ 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name QSO name
13- 20 A8 --- OName Other name
22- 27 F6.4 --- z Redshift
29- 33 F5.2 [10-7W] log(L5100) Continuum luminosity λLλ at
5100Å rest wavelength (1)
35- 39 F5.2 mJy SJ Near-infrared flux in J band
41- 45 F5.2 mJy SH Near-infrared flux in H band
47- 51 F5.2 mJy SK Near-infrared flux in K band
53- 58 F6.2 mJy SL ?=- Near-infrared flux in L band
60- 66 A7 --- Ref Near-infrared fluxes references (2)
68- 77 A10 --- Class Classification as far-infrared strong/weak
(relative to the mid-infrared), or undetected
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Note (1): from spectra by T. Boroson 2006, private communication.
Note (2): References as follows:
2M = 2MASS magnitudes, extended source catalog (Jarrett et al.
2000AJ....119.2498J 2000AJ....119.2498J, cat. VII/233); K20 isophotal magnitudes
for slightly extended sources, point source catalog (II/246)
magnitudes otherwise
H82 = Hyland & Allen (1982MNRAS.199..943H 1982MNRAS.199..943H)
M83 = McAlary et al. (1983ApJS...52..341M 1983ApJS...52..341M)
N87 = Neugebauer et al. (1987ApJS...63..615N 1987ApJS...63..615N)
S89 = Sanders et al. (1989ApJ...347...29S 1989ApJ...347...29S).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 F6.3 um lambda Rest wavelength
8- 12 F5.3 --- ObsF ? Observed QSO SED, λFλ (1)
14- 18 F5.3 --- IntF Intrinsic AGN SED for FIR-weak QSOs,
λFλ (2)
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Note (1): Average observed SED of 28 PG QSOs (see Fig. 3, top, smoothed),
in arbitrary units
Note (2): Average intrinsic AGN SED of 8 'FIR-weak' PG QSOs, after
subtraction of a starburst component (see Fig. 6, right, smoothed),
in arbitrary units
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History:
From electronic version of the journal
References:
Schweitzer et al., Paper I 2006ApJ...649...79S 2006ApJ...649...79S
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 14-Oct-2009