J/ApJ/730/19 IR spectra and SEDs for starbursts and AGNs (Sargsyan+, 2011)
Infrared spectra and spectral energy distributions for dusty starbursts and
active galactic nuclei.
Sargsyan L., Weedman D., Lebouteiller V., Houck J., Barry D.,
Hovhannisyan A., Mickaelian A.
<Astrophys. J., 730, 19 (2011)>
=2011ApJ...730...19S 2011ApJ...730...19S
ADC_Keywords: Active gal. nuclei ; Spectra, infrared ; Galaxies, IR ;
Equivalent widths ; Photometry, infrared
Keywords: galaxies: active - galaxies: distances and redshifts -
galaxies: evolution - galaxies: starburst - infrared: galaxies
Abstract:
We present spectroscopic results for all galaxies observed with the
Spitzer Infrared Spectrograph (IRS) that also have total infrared
fluxes fIR measured with the Infrared Astronomical Satellite (IRAS),
also using AKARI photometry when available. Infrared luminosities and
spectral energy distributions (SEDs) from 8um to 160um are compared to
polycyclic aromatic hydrocarbon emission from starburst galaxies or
mid-infrared dust continuum from active galactic nuclei (AGNs) at
rest-frame wavelengths ∼8um. A total of 301 spectra are analyzed for
which IRS and IRAS include the same unresolved source, as measured by
the ratio fν(IRAS 25um)/fν(IRS 25um). Sources have
0.004<z<0.34 and 42.5<logLIR<46.8(erg/s) and cover the full range of
starburst galaxy and AGN classifications.
Description:
All sources were observed with the Spitzer/IRS using the low-resolution
modules short low 1 (SL1), short low 2 (SL2), long low 1 (LL1), and
long low 2 (LL2), giving spectral coverage from ∼5um to ∼35um.
We assemble and analyze a collection of 301 sources which have both
IRS spectra and IRAS photometry; when available, photometry extending
to 160um is also used from the AKARI mission (Murakami et al.
2007PASJ...59S.369M 2007PASJ...59S.369M; Onaka et al. 2007PASJ...59S.401O 2007PASJ...59S.401O; Kawada et al.
2007PASJ...59S.389K 2007PASJ...59S.389K; Kaneda et al. 2007PASJ...59S.423K 2007PASJ...59S.423K).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 112 51 Spectroscopic properties of starbursts
table2.dat 124 51 SEDs and total luminosities of starbursts
table3.dat 114 79 Spectroscopic properties of composite sources
table4.dat 124 79 SEDs and total luminosities of composite sources
table5.dat 121 171 Spectroscopic properties of AGN
table6.dat 124 171 SEDs and total luminosities of AGN
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/156 : IRAS Faint Source Catalog, |b| > 10, Version 2.0 (Moshir+ 1989)
J/MNRAS/414/500 : Spitzer/IRS ATLAS project source (Hernan-Caballero+, 2011)
J/MNRAS/409/2 : Herschel sources SED model parameters (Rowan-Robinson+, 2011)
J/ApJ/713/970 : SED templates for AGNs and galaxies (Assef+, 2010)
J/ApJS/187/64 : The simultaneous optical-to-X-ray SED of AGNs (Grupe+, 2010)
J/ApJ/709/884 : Starburst-AGN composites in LIRG mergers (Yuan+, 2010)
J/ApJ/719/1191 : Mid-IR indicators of SF and AGN in galaxies (Treyer+, 2010)
J/ApJ/697/182 : Dust emission from unobscured AGN (Thompson+, 2009)
J/ApJ/684/136 : SEDs of ELAIS-S1 mid-IR sources (Gruppioni+, 2008)
J/ApJ/683/114 : IRS spectra of faint IRAS sources (Sargsyan+, 2008)
J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007)
J/ApJ/619/755 : Modeling starburst SEDs (Dopita+, 2005)
J/ApJS/158/139 : Atlas of warm AGN and starbursts (Keel+, 2005)
http://www.sdss.org/ : SDSS home page
Byte-by-byte Description of file: table[135].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Source number
5- 28 A24 --- Name Source name (G1)
30- 41 A12 --- IRAS IRAS FSC catalog name (FHHMMm+DDMMA; B1950;
Cat. II/156)
43- 44 I2 h RAh Hour of Right Ascension (J2000)
46- 47 I2 min RAm Minute of Right Ascension (J2000)
49- 53 F5.2 s RAs Second of Right Ascension (J2000)
55 A1 --- DE- Sign of the Declination (J2000)
56- 57 I2 deg DEd Degree of Declination (J2000)
59- 60 I2 arcmin DEm Arcminute of Declination (J2000)
62- 65 F4.1 arcsec DEs Arcsecond of Declination (J2000)
67- 72 F6.4 --- z NED optical redshift
74 A1 --- f_z [a] a: from Spitzer/IRS spectrum
76- 81 A6 --- SDSS Optical classification from SDSS spectra
(agn, comp, sb or em+abs) (1)
83 A1 --- l_EW6.2 Limit flag on EW6.2
85- 89 F5.3 um EW6.2 PAH 6.2µm feature rest frame
equivalent width (2)
91 A1 --- l_F6.2 Limit flag on F6.2
92- 97 F6.2 10-16W/m2 F6.2 Total PAH 6.2µm feature flux (2)
99 A1 --- l_F11.3 Limit flag on F11.3
100-105 F6.2 10-16W/m2 F11.3 ? Total PAH 11.3µm feature flux (2)
107-112 F6.1 mJy F7.7 Flux density at 7.7µm
114 A1 --- f_F7.7 [f] F7.7 measured at 7.9µm (3)
116-119 F4.2 --- SStr ? Silicate feature strength, only for AGNs (4)
121 A1 --- f_SStr [P] PAH emission + silicate absorption (5)
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Note (1): Determined from presence of broad hydrogen emission lines or
ratios among [OIII] (5007), Hβ, [NII] (6584), and Hα.
Note (2): Fit with single gaussian on a linear continuum within rest
wavelength range 5.5µm to 6.9µm and 10.5µm to 12.0µm for
the 6.2µm and 11.3µm features, respectively.
Note (3):
f = fν(7.9µm) measured because continuum stronger than
PAH peak fν(7.7µm).
Note (4): Strength of silicate feature defined as
fν(10µm,observed)/fν(10µm,continuum), for
fν(10µm,continuum) extrapolated linearly between
fν(7.9µm) and fν(13µm). Values >1 correspond to
silicate emission and values <1 to silicate absorption.
Note (5):
P = Both PAH emission and silicate absorption are present; Absorption
strength is not measured because continuum level at 7.9µm cannot
be reliably determined.
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Byte-by-byte Description of file: table[246].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Source number
5- 16 A12 --- IRAS IRAS FSC name (FHHMMm+DDMMA; B1950) (G1)
19- 24 F6.3 Jy F25-S Spitzer/IRS 25µm flux density
26- 30 F5.3 Jy F8 ? AKARI 8µm flux density
32- 36 F5.3 Jy F12 IRAS 12µm flux density
38- 42 F5.3 Jy F18 ? AKARI 18µm flux density
44- 49 F6.3 Jy F25-I IRAS 25µm flux density
51- 57 F7.3 Jy F60 IRAS 60µm flux density
59- 65 F7.3 Jy F65 ? AKARI 65µm flux density
67- 73 F7.3 Jy F90 ? AKARI 90µm flux density
75- 81 F7.3 Jy F100 IRAS 100µm flux density
83- 88 F6.3 Jy F140 ? AKARI 140µm flux density
90- 96 F7.3 Jy F160 ? AKARI 160µm flux density
98-103 F6.2 mJy F1.25 ? 2MASS 1.25µm (J) flux density
105-110 F6.2 mJy F1.66 ? 2MASS 1.66µm (H) flux density
112-116 F5.2 --- Ratio Ratio of far-IR to 7.7µm (6)
118 A1 --- f_Ratio [fg] 7.9µm used (7)
120-124 F5.2 [10-7W] logL Log of total IR luminosity; erg/s (8)
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Note (6): Where R=fIR/νfν(7.7microns), for
f(IR)=1.8e-11*[13.48fν(12)+5.16fν(25)+2.58fν(60)
+ fν(100)] in erg/cm2/s.
Note (7):
f = fν(7.9microns) measured because continuum stronger than
PAH peak fν(7.7microns).
g = Unique object, having highest value of R accompanied by unusually
low LIR; no SDSS spectrum but optical image resembles a
Blue Compact Dwarf (BCD). See also Bite (G1) below.
Note (8): Where LIR=4πD2fIR for D the luminosity distance
determined for H0=71km/s/Mpc, ΩM=0.27 and
ΩΛ=0.73, from Wright (2006PASP..118.1711W 2006PASP..118.1711W):
http://www.astro.ucla.edu/~wright/CosmoCalc.html.
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Global notes:
Note (G1): In table 5 and 6, source #139 (IRASF17341+5704) is a unique
object having optical classification like Blue Compact Dwarf (BCD)
with narrow optical emission lines, strong [OIII]/Hβ and very
strong Hα/[NII]. Also it has a weak PAH and optical spectrum
like low luminosity BCD (e.g. Hunt et al. 2010ApJ...712..164H 2010ApJ...712..164H), but
LIR compares to normal starburst and AGN.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 14-Sep-2012