(2010) HerMES: SPIRE galaxy number counts at 250, 350, and 500 mu m. Astronomy & Astrophysics, Vol.518 . Article no. L21. doi:10.1051/0004-6361/201014697

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Abstract

Emission at far-infrared wavelengths makes up a significant fraction of the total light detected from galaxies over the age of Universe. Herschel provides an opportunity for studying galaxies at the peak wavelength of their emission. Our aim is to provide a benchmark for models of galaxy population evolution and to test pre-existing models of galaxies. With the Herschel Multi-tiered Extra-galactic survey, HerMES, we have observed a number of fields of different areas and sensitivity using the SPIRE instrument on Herschel. We have determined the number counts of galaxies down to similar to 20 mJy. Our constraints from directly counting galaxies are consistent with, though more precise than, estimates from the BLAST fluctuation analysis. We have found a steep rise in the Euclidean normalised counts < 100 mJy. We have directly resolved similar to 15% of the infrared extra-galactic background at the wavelength near where it peaks.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Centre for Systems Biology
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Official Date:	July 2010
Dates:	Date Event July 2010 Published
Volume:	Vol.518
Number of Pages:	5
Page Range:	Article no. L21
DOI:	10.1051/0004-6361/201014697
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	CSA (Canada), NAOC (China), CEA (France), CNES (France), CNRS (France), ASI (Italy), MCINN (Spain), SNSB (Sweden), STFC (UK), NASA (USA)

Data sourced from Thomson Reuters' Web of Knowledge

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