J/MNRAS/401/160 AzTEC survey of the SHADES fields. I. (Austermann+, 2010)
AzTEC half square degree survey of the SHADES fields.
I. Maps, catalogues and source counts.
Austermann J.E., Dunlop J.S., Perera T.A., Scott K.S., Wilson G.W.,
Aretxaga I., Hughes D.H., Almaini O., Chapin E.L., Chapman S.C.,
Cirasuolo M., Clements D.L., Coppin K.E.K., Dunne L., Dye S., Eales S.A.,
Egami E., Farrah D., Ferrusca D., Flynn S., Haig D., Halpern M., Ibar E.,
Ivison R.J., Van Kampen E., Kang Y., Kim S., Lacey C., Lowenthal J.D.,
Mauskopf P.D., McLure R.J., Mortier A.M.J., Negrello M., Oliver S.,
Peacock J.A., Pope A., Rawlings S., Rieke G., Roseboom I.,
Rowan-Robinson M., Scott D., Serjeant S., Smail I., Swinbank A.M.,
Stevens J.A., Velazquez M., Wagg J., Yun M.S.
<Mon. Not. R. Astron. Soc., 401, 160-176 (2010)>
=2010MNRAS.401..160A 2010MNRAS.401..160A
ADC_Keywords: Surveys ; Millimetric/submm sources
Keywords: surveys - galaxies: evolution - cosmology: miscellaneous -
submillimetre
Abstract:
We present the first results from the largest deep extragalactic
mm-wavelength survey undertaken to date. These results are derived
from maps covering over 0.7deg2, made at λ=1.1mm, using the
AzTEC continuum camera mounted on the James Clerk Maxwell Telescope.
The maps were made in the two fields originally targeted at
λ=850um with the Submillimetre Common-User Bolometer Array
(SCUBA) in the SCUBA Half-Degree Extragalactic Survey (SHADES)
project, namely the Lockman Hole East (mapped to a depth of 0.9-1.3mJy
rms) and the Subaru/XMM-Newton Deep Field (mapped to a depth of
1.0-1.7mJy rms). The wealth of existing and forthcoming deep
multifrequency data in these two fields will allow the bright mm
source population revealed by these new wide-area 1.1mm images to be
explored in detail in subsequent papers. Here, we present the maps
themselves, a catalogue of 114 high-significance submillimetre galaxy
detections, and a thorough statistical analysis leading to the most
robust determination to date of the 1.1mm source number counts. These
new maps, covering an area nearly three times greater than the SCUBA
SHADES maps, currently provide the largest sample of cosmological
volumes of the high-redshift Universe in the mm or sub-mm. Through
careful comparison, we find that both the Cosmic Evolution Survey
(COSMOS) and the Great Observatories Origins Deep Survey (GOODS) North
fields, also imaged with AzTEC, contain an excess of mm sources over
the new 1.1mm source-count baseline established here.
Description:
We have completed the SHADES (Mortier et al., 2005, Cat.
J/MNRAS/363/563) by mapping over one-half square degree of sky using
the AzTEC 1.1-mm camera mounted on the 15-m James Clerk Maxwell
Telescope (JCMT).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 67 43 AzTEC Lockman Hole (LH) candidates with S/N≥4
table2.dat 67 43 AzTEC Lockman Hole (LH) candidates with S/N<4
table3.dat 68 28 AzTEC/SXDF source candidates
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See also:
J/MNRAS/363/563 : SCUBA Half-Degree Extragalactic Survey. I. (Mortier+, 2005)
Byte-by-byte Description of file: table[123].dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [AzTEC_]
7- 25 A19 --- AzTEC Source name (JHHMMSS.ss+DDMMSS.s)
27- 36 A10 --- Name Nickname (AzLOCK.NNN or AzSXDF.NN)
39- 41 F3.1 --- S/N Signal-to-noise ratio of the detection in the
AzTEC map
43- 45 F3.1 mJy S1100 Measured 1100um flux density
47- 49 F3.1 mJy e_S1100 rms uncertainty on S1100
51- 53 F3.1 mJy S1100c Corrected 1100um flux density
55- 57 F3.1 mJy E_S1100c Error on S1100c (upper value) (1)
59- 61 F3.1 mJy e_S1100c Error on S1100c (lower value) (1)
63- 67 F5.3 --- Prob Probability that the source will deboost to
Si<0 when assuming the AzTEC/SHADES Bayesian
prior, P(S1100<0)
68 A1 --- n_Prob [a] for table3, source with S/N≥4 (2)
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Note (1): 68% confidence interval, as defined in Section 3.6, after
corrections for flux boosting and the bias to peak locations in the map.
Note (2): Source is included in order to have a complete list of candidates
with S/N≥4, despite its relatively high null probability.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Jan-2012