J/MNRAS/385/2225 AzTEC millimetre survey of COSMOS field (Scott+, 2008)
AzTEC millimetre survey of the COSMOS field.
I. Data reduction and source catalogue.
Scott K.S., Austermann J.E., Perera T.A., Wilson G.W., Aretxaga I.,
Bock J.J., Hughes D.H., Kang Y., Kim S., Mauskopf P.D., Sanders D.B.,
Scoville N., Yun M.S.
<Mon. Not. R. Astron. Soc., 385, 2225-2238 (2008)>
=2008MNRAS.385.2225S 2008MNRAS.385.2225S
ADC_Keywords: Surveys ; Millimetric/submm sources
Keywords: galaxies: high-redshift - galaxies: starburst - submillimetre
Abstract:
We present a 1.1mm wavelength imaging survey covering 0.3deg2 in the
COSMOS field. These data, obtained with the AzTEC continuum camera on
the James Clerk Maxwell Telescope, were centred on a prominent
large-scale structure overdensity which includes a rich X-ray cluster
at z≫0.73. A total of 50mm-galaxy candidates, with a significance
ranging from 3.5 to 8.5sigma, are extracted from the central
0.15deg2 area which has a uniform sensitivity of 1.3mJy/beam. 16
sources are detected with S/N≥4.5, where the expected false-detection
rate is zero, of which a surprisingly large number (9) have intrinsic
(deboosted) fluxes ≥5mJy at 1.1mm.
Description:
We selected a 0.3deg2 region in the northwest quadrant of the COSMOS
field for millimetre imaging with AzTEC. Only the central area of
0.15deg2, with uniform noise, is discussed in this paper. The
observations were carried out at the JCMT in 2005 November and
December. A total of 34h of telescope time (excluding pointing and
calibration overheads) was devoted to this survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 75 52 AzTEC/COSMOS source candidates
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See also:
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [AzTEC_]
7- 25 A19 --- AzTEC AzTEC source designation, JHHMMSS.ss+DDMMSS.s
26- 28 A3 --- n_AzTEC [abcde, ] Note on AzTEC (1)
30- 35 A6 --- SMA SMA identification (AzTECN)
37- 39 F3.1 --- S/N Signal-to-noise ratio of the detection in
the AzTEC map
41- 44 F4.1 mJy S1.1 Measured flux density at 1.1mm
46- 48 F3.1 mJy e_S1.1 rms uncertainty on S1.1mm
50- 52 F3.1 mJy S1.1d Deboosted flux density at 1.1mm
54- 56 F3.1 mJy E_S1.1d 68% confidence interval (upper limit)
58- 60 F3.1 mJy e_S1.1d 68% confidence interval (lower limit)
62- 65 F4.1 mJy S0.89 ? 890um flux density (Younger et al.,
2007ApJ...671.1531Y 2007ApJ...671.1531Y)
67- 69 F3.1 mJy e_S0.89 ? rms uncertainty on S890um
71- 75 F5.3 --- P(S1.1<0) Probability that the source will deboost to
a negative flux (i.e. false detection)
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Note (1): Notes as follows:
a = Sources have also been detected with Bolocam
(J. Aguirre, private communication)
b = AzTEC sources with one or more candidate MIPS 24um counterpart
(Section 6.3)
c = AzTEC sources with one or more candidate radio counterpart
(Section 6.2)
d = These sources have very non-Gaussian PFDs and ill-defined local
maxima due to low S/N. In these cases, the deboosted flux
densities have been determined by the expectation value of
the flux given the PFD
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Sep-2008