J/ApJ/719/763 Millimeter-wave sources in the SPT survey (Vieira+, 2010)
Extragalactic millimeter-wave sources in South Pole Telescope survey data:
source counts, catalog, and statistics for an 87 square-degree field.
Vieira J.D., Crawford T.M., Switzer E.R., Ade P.A.R., Aird K.A.,
Ashby M.L.N., Benson B.A., Bleem L.E., Brodwin M., Carlstrom J.E.,
Chang C.L., Cho H.-M., Crites A.T., de Haan T., Dobbs M.A., Everett W.,
George E.M., Gladders M., Hall N.R., Halverson N.W., High F.W.,
Holder G.P., Holzapfel W.L., Hrubes J.D., Joy M., Keisler R., Knox L.,
Lee A.T., Leitch E.M., Lueker M., Marrone D.P., McIntyre V., McMahon J.J.,
Mehl J., Meyer S.S., Mohr J.J., Montroy T.E., Padin S., Plagge T.,
Pryke C., Reichardt C.L., Ruhl J.E., Schaffer K.K., Shaw L., Shirokoff E.,
Spieler H.G., Stalder B., Staniszewski Z., Stark A.A., Vanderlinde K.,
Walsh W., Williamson R., Yang Y., Zahn O., Zenteno A.
<Astrophys. J., 719, 763-783 (2010)>
=2010ApJ...719..763V 2010ApJ...719..763V
ADC_Keywords: Millimetric/submm sources ; Active gal. nuclei ; Surveys
Keywords: galaxies: high-redshift - submillimeter: galaxies - surveys
Abstract:
We report the results of an 87deg2 point-source survey centered at
R.A. 5h30m, decl. -55° taken with the South Pole Telescope at 1.4
and 2.0mm wavelengths with arcminute resolution and milli-Jansky
depth. Based on the ratio of flux in the two bands, we separate the
detected sources into two populations, one consistent with synchrotron
emission from active galactic nuclei and the other consistent with
thermal emission from dust. We present source counts for each
population from 11 to 640mJy at 1.4mm and from 4.4 to 800mJy at 2.0mm.
The 2.0mm counts are dominated by synchrotron-dominated sources across
our reported flux range; the 1.4mm counts are dominated by
synchrotron-dominated sources above ∼15mJy and by dust-dominated
sources below that flux level. We detect 141 synchrotron-dominated
sources and 47 dust-dominated sources at signal-to-noise ratio S/N>4.5
in at least one band. All of the most significantly detected members
of the synchrotron-dominated population are associated with sources in
previously published radio catalogs. Some of the dust-dominated
sources are associated with nearby (z≪1) galaxies whose dust emission
is also detected by the Infrared Astronomy Satellite. However, most of
the bright, dust-dominated sources have no counterparts in any
existing catalogs. We argue that these sources represent the rarest
and brightest members of the population commonly referred to as
submillimeter galaxies (SMGs).
Description:
During the 2008 observing season, the 960-element South Pole Telescope
(SPT) camera included detectors sensitive to radiation within bands
centered at approximately 1.4mm, 2.0mm, and 3.2mm (220GHz, 150GHz, and
95GHz). Results in this paper are based on 607hr of observing time,
using only the 1.4mm and 2.0mm data from the 87deg2 portion of the
field that was mapped with near-uniform coverage.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 145 3496 Point sources above 3σ at 1.4mm or 2.0mm
in an 87 square degree South Pole Telescope (SPT)
field centered at 05:30-55° (J2000)
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See also:
VIII/81 : Sydney University Molonglo Sky Survey (SUMSS V2.1) (Mauch+ 2008)
IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
II/156 : IRAS Faint Source Catalog, |b| > 10, Version 2.0 (Moshir+ 1989)
J/MNRAS/413/2314 : Radio and mid-IR counterpart of submm galaxies (Biggs+,
2011)
J/ApJ/712/942 : z>4 submillimeter galaxies (Michalowski+, 2010)
J/MNRAS/401/160 : AzTEC survey of the SHADES fields. I. (Austermann+, 2010)
J/ApJ/699/1610 : Spitzer survey of submillimeter galaxies (Hainline+, 2009)
J/MNRAS/385/1656 : Extragalactic radio-sources at 95GHz (Sadler+, 2008)
J/MNRAS/385/2225 : AzTEC millimetre survey of COSMOS field (Scott+, 2008)
J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [SPT-S]
7- 20 A14 --- SPT-S Source identification (JHHMMSS+DDMM.m)
22- 27 F6.3 deg RAdeg Right Ascension in decimal degrees (J2000)
29- 35 F7.3 deg DEdeg Declination in decimal degrees (J2000)
37- 42 F6.2 --- S/N2 Signal-to-noise of 2.0mm data
44- 49 F6.2 mJy S2.0r Raw 2.0mm flux density
51- 56 F6.2 mJy S2.0b De-boosted 2.0mm flux density
58- 62 F5.2 mJy E_S2.0b Upper limit uncertainty in S2.0b
64- 68 F5.2 mJy e_S2.0b Lower limit uncertainty in S2.0b
70- 75 F6.2 --- S/N1 Signal-to-noise of 1.4mm data
77- 82 F6.2 mJy S1.4r Raw 1.4mm flux density
84- 89 F6.2 mJy S1.4b De-boosted 1.4mm flux density
91- 95 F5.2 mJy E_S1.4b Upper limit uncertainty in S1.4b
97-101 F5.2 mJy e_S1.4b Lower limit uncertainty in S1.4b
103-107 F5.1 --- SpI.r Raw spectral index (1)
109-112 F4.1 --- SpI.b De-boosted spectral index
114-116 F3.1 --- E_SpI.b Upper limit uncertainty in SpI.b
118-120 F3.1 --- e_SpI.b Lower limit uncertainty in SpI.b
122-125 F4.2 --- P(1.66) [0/1] Fraction of spectral index posterior
probability above 1.66 (2)
127-130 A4 --- Type [sync/dust] Source classification (3)
132-135 I4 arcsec SUMSS [0/1157] Nearest source in SUMSS (Cat. VIII/81)
137-140 I4 arcsec RASS [3/2167] Nearest source in RASS (Cat. IX/10 and
Cat. IX/29)
142-145 I4 arcsec IRAS [1/2180] Nearest source in IRAS (Cat. II/156)
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Note (1): Non-finite values have been filled in with ±99.0.
Note (2): A higher value means the source is more likely to be dust-dominated.
Note (3): Type are:
sync = sources with flat or decreasing brightness with decreasing wavelength,
consistent with synchrotron emission from active galactic nuclei
(AGNs, typically S∝λ∼1)
dust = sources with increasing brightness with decreasing wavelength,
consistent with thermal emission (typically S∝λ~-3)
from dust-enshrouded star-forming galaxies
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 18-Jun-2012