J/ApJ/723/895 IR luminosities and aromatic features of 5MUSES (Wu+, 2010)
Infrared luminosities and aromatic features in the 24 µm flux-limited sample
of 5MUSES.
Wu Y., Helou G., Armus L., Cormier D., Shi Y., Dale D., Dasyra K.,
Smith J.D., Papovich C., Draine B., Rahman N., Stierwalt S., Fadda D.,
Lagache G., Wright E.L.
<Astrophys. J., 723, 895-914 (2010)>
=2010ApJ...723..895W 2010ApJ...723..895W
ADC_Keywords: Active gal. nuclei ; Galaxies, IR ; Spectra, infrared ; Surveys
Keywords: galaxies: active - galaxies: starburst - infrared: galaxies - surveys
Abstract:
We study a 24um selected sample of 330 galaxies observed with the
infrared spectrograph for the 5mJy Unbiased Spitzer Extragalactic
Survey (5MUSES). We estimate accurate total infrared luminosities by
combining mid-IR spectroscopy and mid-to-far infrared photometry, and
by utilizing new empirical spectral templates from Spitzer data. The
infrared luminosities of this sample range mostly from 109L☉
to 1013.5L☉, with 83% in the range
1010L☉<LIR<1012L☉. The redshifts range from 0.008 to
4.27, with a median of 0.144. The equivalent widths of the 6.2um
aromatic feature have a bimodal distribution, probably related to
selection effects. We use the 6.2um polycyclic aromatic hydrocarbon
equivalent width (PAH EW) to classify our objects as starburst
(SB)-dominated (44%), SB-AGN composite (22%), and active galactic
nucleus (AGN)-dominated (34%). The high EW objects (SB-dominated) tend
to have steeper mid-IR to far-IR spectral slopes and lower LIR and
redshifts.
Description:
5MUSES is a mid-IR spectroscopic survey of a 24um flux-limited
(f24um>5mJy) representative sample of 330 galaxies. The galaxies are
selected from the SWIRE fields including Elais-N1 (9.5deg2),
Elais-N2 (5.3deg2), Lockman Hole (11.6deg2), and XMM (9.2deg2),
in addition to the Spitzer Extragalactic First Look Survey (XFLS;
5.0deg2) field (Fadda et al., 2006, Cat. J/AJ/131/2859). The full
details of the sample, including selection criteria and observation
strategy are covered in G. Helou et al. (2010, in preparation).
IRAC 3.6-8.0um photometry is available for the entire 5MUSES sample.
In addition to the Multiband Imaging Photometer for Spitzer (MIPS)
24um photometry used to select this sample, 90% of our sources have
also been detected at 70um and 54% have been detected at 160um.
Low-resolution spectra (R=64-128) of all 330 galaxies in 5MUSES have
been obtained with the short-low (SL: 5.5-14.5um and long-low (LL:
14-35um) modules of the IRS using the staring mode observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 98 280 General properties of the sample
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See also:
II/255 : SWIRE ELAIS N1 Source Catalogs (Surace+, 2004)
II/290 : SWIRE Photometric Redshift Catalogue (Rowan-Robinson+, 2008)
J/MNRAS/414/500 : Spitzer/IRS ATLAS project source (Hernan-Caballero+, 2011)
J/ApJ/714/1256 : Far-IR star formation rate indicators (Calzetti+, 2010)
J/ApJ/709/572 : COSMOS 70um sources (Kartaltepe+, 2010)
J/ApJ/705/885 : PAH in galaxies at z∼0.1 (O'Dowd+, 2009)
J/ApJ/703/1778 : Spitzer sources in SWIRE/XMM/ELAIS-S1 field (Sacchi+, 2009)
J/ApJ/701/1123 : MIR spectroscopic catalog of 150 galaxies (Dasyra+, 2009)
J/ApJ/693/1821 : The Spitzer infrared nearby galaxies survey (Dale+, 2009)
J/ApJ/693/370 : 24um flux-limited sample of galaxies (Weedman+, 2009)
J/ApJS/184/230 : Spitzer high-resolution MIR spectral atlas (Bernard-Salas+,
2009)
J/ApJS/182/628 : Spitzer quasar and ULIRG evolution study (Veilleux+, 2009)
J/ApJ/656/770 : Mid-IR spectrum of star-forming galaxies (Smith+, 2007)
J/ApJ/658/778 : Spitzer mid-IR spectroscopy of z∼2 ULIRGs (Yan+, 2007)
J/AJ/131/2859 : Extragalactic First Look Survey: 24µm data (Fadda+, 2006)
http://irsa.ipac.caltech.edu/data/SPITZER/5MUSES/ : 5mJy Unbiased Spitzer
Extragalactic Survey (5MUSES) data access
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- --- [5MUSES-]
8- 10 I3 --- Seq Source 5MUSES identification
12- 18 A7 --- --- [5MUSES_]
19- 37 A19 --- 5MUSES Source 5MUSES name (JHHMMSS.ss+DDMMSS.s)
39- 40 I2 h RAh Hour of Right Ascension (J2000)
42- 43 I2 min RAm Minute of Right Ascension (J2000)
45- 48 F4.1 s RAs Second of Right Ascension (J2000)
50 A1 --- DE- Sign of the Declination (J2000)
51- 52 I2 deg DEd Degree of Declination (J2000)
54- 55 I2 arcmin DEm Arcminute of Declination (J2000)
57- 60 F4.1 arcsec DEs Arcsecond of Declination (J2000)
62- 66 F5.3 --- z [0.008/4.27] Redshift
68 I1 --- r_z [1/2] Origin of z (1)
70- 73 F4.1 mJy F24 Spitzer/MIPS 24 micron flux density
75 A1 --- l_EW6.2 Limit flag on EW6.2
76- 81 F6.3 um EW6.2 ? Equivalent width of 6.2µm PAH band
83- 87 F5.3 um e_EW6.2 ? Uncertainty in 6.2µm EW
89- 93 F5.2 [Lsun] logLIR Log of IR luminosity
95- 98 F4.2 [Lsun] e_logLIR Uncertainty in logLIR
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Note (1): Flag as follows:
1 = redshift obtained from NASA/IPAC Extragalactic Database;
2 = redshift derived from IRS spectra (for 136 sources).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 20-Jul-2012