A surprising consistency between the far-infrared galaxy luminosity functions of the field and Coma

Hickinbottom, S.; Simpson, C.J.; James, P.A.; Ibar, E.; Carter, D.; Boselli, A.; Collins, C.A.; Davies, J.I.; Dunne, L.; Eales, S.; Fuller, C.; Mobasher, B.; Peletier, R.F.; Phillipps, S.; Smith, D.J.B.; Smith, R.J.; Valentijn, E.A.

doi:10.1093/mnras/stu924

A surprising consistency between the far-infrared galaxy luminosity functions of the field and Coma

Hickinbottom, S.; Simpson, C.J.; James, P.A.; Ibar, E.; Carter, D.; Boselli, A.; Collins, C.A.; Davies, J.I.; Dunne, L.; Eales, S.; Fuller, C.; Mobasher, B.; Peletier, R.F.; Phillipps, S.; Smith, D.J.B.; Smith, R.J.; Valentijn, E.A.

Authors

S. Hickinbottom

C.J. Simpson

P.A. James

E. Ibar

D. Carter

A. Boselli

C.A. Collins

J.I. Davies

L. Dunne

S. Eales

C. Fuller

B. Mobasher

R.F. Peletier

S. Phillipps

Dr Russell Smith russell.smith@durham.ac.uk
Assistant Professor

E.A. Valentijn

Abstract

We present new deep images of the Coma Cluster from the ESA Herschel Space Observatory at wavelengths of 70, 100 and 160 μm, covering an area of 1.75 × 1.0 square degrees encompassing the core and south-west infall region. Our data display an excess of sources at flux densities above 100 mJy compared to blank-field surveys, as expected. We use extensive optical spectroscopy of this region to identify cluster members and hence produce cluster luminosity functions in all three photometric bands. We compare our results to the local field galaxy luminosity function, and the luminosity functions from the Herschel Virgo Cluster Survey. We find consistency between the shapes of the Coma and field galaxy luminosity functions at all three wavelengths; however, we do not find the same level of agreement with that of the Virgo Cluster.

Citation

Hickinbottom, S., Simpson, C., James, P., Ibar, E., Carter, D., Boselli, A., …Valentijn, E. (2014). A surprising consistency between the far-infrared galaxy luminosity functions of the field and Coma. Monthly Notices of the Royal Astronomical Society, 442(2), 1286-1293. https://doi.org/10.1093/mnras/stu924

Journal Article Type	Article
Publication Date	Aug 1, 2014
Deposit Date	Jun 17, 2014
Publicly Available Date	Jul 28, 2014
Journal	Monthly Notices of the Royal Astronomical Society
Print ISSN	0035-8711
Electronic ISSN	1365-2966
Publisher	Royal Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	442
Issue	2
Pages	1286-1293
DOI	https://doi.org/10.1093/mnras/stu924

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This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.