J/MNRAS/462/1989 HerMES Large Mode Survey catalogue (Asboth+, 2016)
HerMES: a search for high-redshift dusty galaxies in the
HerMES Large Mode Survey. Catalogue, number counts and early results.
Asboth V., Conley A., Sayers J., Bethermin M., Chapman S.C., Clements D.L.,
Cooray A., Dannerbauer H., Farrah D., Glenn J., Golwala S.R., Halpern M.,
Ibar E., Ivison R.J., Maloney P.R., Marques-chaves R.,
Martinez-Navajas P.I., Oliver S.J., Perez-Fournon I., Riechers D.A.,
Rowan-Robinson M., Scott D., Siegel S.R., Vieira J.D., Viero M., Wang L.,
Wardlow J., Wheeler J.
<Mon. Not. R. Astron. Soc., 462, 1989-2000 (2016)>
=2016MNRAS.462.1989A 2016MNRAS.462.1989A (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Galaxies, IR ; Photometry, millimetric/submm
Keywords: galaxies: evolution - galaxies: high-redshift - galaxies: starburst -
infrared: galaxies - submillimetre: galaxies
Abstract:
Selecting sources with rising flux densities towards longer
wavelengths from Herschel/Spectral and Photometric Imaging Receiver
(SPIRE) maps is an efficient way to produce a catalogue rich in
high-redshift (z>4) dusty star-forming galaxies. The effectiveness
of this approach has already been confirmed by spectroscopic follow-up
observations, but the previously available catalogues made this way
are limited by small survey areas. Here we apply a map-based search
method to 274deg2 of the Herschel Multi-tiered Extragalactic Survey
(HerMES) Large Mode Survey and create a catalogue of 477 objects with
SPIRE flux densities S500>S350>S250 and a 5σ cut-off
S500>52mJy. From this catalogue we determine that the total
number of these 'red' sources is at least an order of magnitude higher
than predicted by galaxy evolution models. These results are in
agreement with previous findings in smaller HerMES fields; however,
due to our significantly larger sample size we are also able to
investigate the shape of the red source counts for the first time. We
have obtained spectroscopic redshift measurements for two of our
sources using the Atacama Large Millimeter/submillimeter Array. The
redshifts z=5.1 and 3.8 confirm that with our selection method we
can indeed find high-redshift dusty star-forming galaxies.
Description:
The HerMES Large Mode Survey (HeLMS) consists of a large area shallow
observation of an equatorial field at wavelengths of 250, 350 and
500um, obtained using the SPIRE aboard the Herschel Space Observatory.
HeLMS is an extension of HerMES (Oliver et al., 2012MNRAS.424.1614O 2012MNRAS.424.1614O,
Cat. VIII/95 and VIII/103), a 'wedding cake' type survey
containing small and deep maps and larger shallower observations of
different fields. HeLMS covers about 302deg2 of the sky, making it
the largest area observed in the HerMES.
The HeLMS field spans 23h14m<RA<1h16m and -9°<DE<+9°, an
equatorial region with low cirrus contamination. It was designed to
have a large overlap with the Sloan Digital Sky Survey;s Stripe 82
field (Abazajian et al., 2009ApJS..182..543A 2009ApJS..182..543A), one of the most highly
observed areas of the sky, with extensive multiwavelength ancillary
data coverage. The equatorial area has the advantage that it can be
observed from almost any ground-based telescope site in the world.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 104 477 HeLMS red source catalogue
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See also:
VIII/103 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)
http://hedam.lam.fr/HerMES/ : HerMES Home Page
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- ID Name (HELMSREDNNNN)
15- 23 F9.5 deg RAdeg Right ascension (J2000)
25- 32 F8.5 deg DEdeg Declination (J2000)
34- 40 F7.5 Jy S250 HERMES flux density at 250um
42- 48 F7.5 Jy e_S250 rms uncertainty on S250
50- 56 F7.5 --- corr250 Pearson correlation coefficient r on S250 (1)
58- 64 F7.5 Jy S350 HERMES flux density at 350um
66- 72 F7.5 Jy e_S350 rms uncertainty on S350
74- 80 F7.5 --- corr350 Pearson correlation coefficient r on S350 (1)
82- 88 F7.5 Jy S500 HERMES flux density at 500um
90- 96 F7.5 Jy e_S500 rms uncertainty on S500
98-104 F7.5 --- corr500 Pearson correlation coefficient r on S500 (1)
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Note (1): Pearson correlation coefficient r between our data d and the beam
shape P at each position.
We pick the position where the correlation is the largest, and we extract the
flux density at this position using inverse variance weighting.
See Section 3.4 for more details.
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History:
Copied at http://hedam.lam.fr/HerMES/index/contributed_data
(End) Patricia Vannier [CDS] 31-Jan-2018