B. Sibthorpe
Extragalactic number counts at 100 μm, free from cosmic variance
Sibthorpe, B.; Ivison, R.J.; Massey, R.J.; Roseboom, I.G.; van der Werf, P.P.; Matthews, B.C.; Greaves, J.S.
Authors
R.J. Ivison
Professor Richard Massey r.j.massey@durham.ac.uk
Professor
I.G. Roseboom
P.P. van der Werf
B.C. Matthews
J.S. Greaves
Abstract
We use data from the Disc Emission via a Bias-free Reconnaissance in the Infrared/Submillimetre (DEBRIS) survey, taken at 100 μm with the Photoconductor Array Camera and Spectrometer instrument on board the Herschel Space Observatory, to make a cosmic variance independent measurement of the extragalactic number counts. These data consist of 323 small-area mapping observations performed uniformly across the sky, and thus represent a sparse sampling of the astronomical sky with an effective coverage of ∼2.5 deg2. We find our cosmic variance independent analysis to be consistent with previous count measurements made using relatively small area surveys. Furthermore, we find no statistically significant cosmic variance on any scale within the errors of our data. Finally, we interpret these results to estimate the probability of galaxy source confusion in the study of debris discs.
Citation
Sibthorpe, B., Ivison, R., Massey, R., Roseboom, I., van der Werf, P., Matthews, B., & Greaves, J. (2013). Extragalactic number counts at 100 μm, free from cosmic variance. Monthly Notices of the Royal Astronomical Society: Letters, 428(1), L6-L10. https://doi.org/10.1093/mnrasl/sls002
Journal Article Type | Article |
---|---|
Publication Date | Jan 1, 2013 |
Deposit Date | Mar 21, 2013 |
Publicly Available Date | Jun 27, 2014 |
Journal | Monthly Notices of the Royal Astronomical Society: Letters |
Electronic ISSN | 1745-3933 |
Publisher | Oxford University Press |
Peer Reviewed | Peer Reviewed |
Volume | 428 |
Issue | 1 |
Pages | L6-L10 |
DOI | https://doi.org/10.1093/mnrasl/sls002 |
Keywords | Cosmology: miscellaneous, Large-scale structure of Universe, Infrared: galaxies. |
Public URL | https://durham-repository.worktribe.com/output/1462899 |
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Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society : letters © 2013 The Authors Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.
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