J/other/Nat/458.737 BLAST sources at 250, 350 and 500um (Devlin+, 2009)
Over half of the far-infrared background light comes from galaxies at z∼1.2.
Devlin M.J., Ade P.A.R., Aretxaga I., Bock J.J., Chapin E.L., Griffin M.,
Gundersen J.O., Halpern M., Hargrave P.C., Martin P.G., Mauskopf P.,
Moncelsi L., Netterfield C.B., Ngo H., Olmi L., Pascale E., Patanchon G.,
Rex M., Scott D., Semisch C., Thomas N., Truch M.D.P., Tucker C.,
Tucker G.S., Viero M.P., Wiebe D.
<Nature, 458, 737-739 (2009)>
=2009Natur.458..737D 2009Natur.458..737D
ADC_Keywords: Millimetric/submm sources
Abstract:
Submillimetre surveys during the past decade have discovered a
population of luminous, high-redshift, dusty starburst galaxies.
In the redshift range 1 less than or equal to z less than or equal to
4, these massive submillimetre galaxies go through a phase
characterized by optically obscured star formation at rates several
hundred times that in the local Universe. Half of the starlight from
this highly energetic process is absorbed and thermally re-radiated by
clouds of dust at temperatures near 30K with spectral energy
distributions peaking at 100um in the rest frame. At 1 less than or
equal to z less than or equal to 4, the peak is redshifted to
wavelengths between 200 and 500um. The cumulative effect of these
galaxies is to yield extragalactic optical and far-infrared
backgrounds with approximately equal energy densities. Since the
initial detection of the far-infrared background (FIRB),
higher-resolution experiments have sought to decompose this integrated
radiation into the contributions from individual galaxies. Here we
report the results of an extragalactic survey at 250, 350 and 500um.
Combining our results at 500 mum with those at 24um, we determine
that all of the FIRB comes from individual galaxies, with galaxies at
z greater than or equal to 1.2 accounting for 70% of it. As expected,
at the longest wavelengths the signal is dominated by ultraluminous
galaxies at z>1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables2.dat 97 1756 *Source list 1. Sources at 250um
tables3.dat 97 1440 *Source List 2. Sources at 350um
tables4.dat 97 1111 *Source List 3. Sources at 500um
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Note on tables2.dat: BLASTgoods-s2006-12-21cat2502008-11-243sigbid.dat
Note on tables3.dat: BLASTgoods-s2006-12-21cat3502008-11-243sigbid.dat
Note on tables4.dat: BLASTgoods-s2006-12-21cat5002008-11-243sigbid.dat
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See also:
J/ApJ/681/428 : BLAST sources in Galactic plane survey (Chapin+, 2008)
J/ApJ/703/285 : Radio and 24um BLAST counterparts in CDFS (Dye+, 2009)
J/ApJ/707/1779 : BLAST: the redshift survey (Eales+, 2009)
J/ApJS/191/222 : BLAST observations of the SEP field (Valiante+, 2010)
J/MNRAS/411/505 : BLAST/LABOCA obs. in Extended Chandra DFS (Chapin+, 2011)
Byte-by-byte Description of file: tables2.dat tables3.dat tables4.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [BLAST]
7- 20 A14 --- BLAST BLAST name (JHHMMSS+DDMMSS)
22 A1 --- --- [(]
23- 25 I3 um Band Observed band (250, 350 or 500)
26- 28 A3 --- --- [um)]
30- 38 F9.4 pix Xpos X position
40- 48 F9.4 pix Ypos Y position
50- 58 F9.6 deg RAdeg Right ascension in decimal degrees (J2000)
60- 69 F10.6 deg DEdeg Declination in decimal degrees (J2000)
71- 78 F8.6 Jy Flux Flux in the observed band
80- 87 F8.6 Jy Noise Noise
89- 97 F9.6 --- S/N Signal-to-noise ratio
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 02-Nov-2011