HerMES: SPIRE galaxy number counts at 250, 350 and 500 microns
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 ~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 at <100 mJy. We have directly resolved 15% of the infrared extra-galactic background at the wavelength near where it peaks.
Cite
@article{arxiv.1005.2184,
title = {HerMES: SPIRE galaxy number counts at 250, 350 and 500 microns},
author = {S. J. Oliver and L. Wang and A. J. Smith and B. Altieri and A. Amblard and V. Arumugam and R. Auld and H. Aussel and T. Babbedge and A. Blain and J. Bock and A. Boselli and V. Buat and D. Burgarella and N. Castro-Rodriguez and A. Cava and P. Chanial and D. L. Clements and A. Conley and L. Conversi and A. Cooray and C. D. Dowell and E. Dwek and S. Eales and D. Elbaz and M. Fox and A. Franceschini and W. Gear and J. Glenn and M. Griffin and M. Halpern and E. Hatziminaoglou and E. Ibar and K. Isaak and R. J. Ivison and G. Lagache and L. Levenson and N. Lu and S. Madden and B. Maffei and G. Mainetti and L. Marchetti and K. Mitchell-Wynne and A. M. J. Mortier and H. T. Nguyen and B. O'Halloran and A. Omont and M. J. Page and P. Panuzzo and A. Papageorgiou and C. P. Pearson and I. Perez-Fournon and M. Pohlen and J. I. Rawlings and G. Raymond and D. Rigopoulou and D. Rizzo and I. G. Roseboom and M. Rowan-Robinson and M. Sanchez Portal and R. Savage and B. Schulz and Douglas Scott and N. Seymour and D. L. Shupe and J. A. Stevens and M. Symeonidis and M. Trichas and K. E. Tugwell and M. Vaccari and E. Valiante and I. Valtchanov and J. D. Vieira and L. Vigroux and R. Ward and G. Wright and C. K. Xu and M. Zemcov},
journal= {arXiv preprint arXiv:1005.2184},
year = {2015}
}
Comments
Astronomy and Astrophysics, Herschel Special Issue, in press as a Letter; 5 pages