Bibcode
Asboth, V.; Conley, A.; Sayers, J.; Béthermin, 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.; Pérez-Fournon, I.; Riechers, D. A.; Rowan-Robinson, M.; Scott, Douglas; Siegel, S. R.; Vieira, J. D.; Viero, M.; Wang, L.; Wardlow, J.; Wheeler, J.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 462, Issue 2, p.1989-2000
Fecha de publicación:
10
2016
Número de citas
75
Número de citas referidas
69
Descripción
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 274
deg2 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 > 52 mJy. 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.