The Herschel Virgo Cluster Survey: I. Luminosity functions
J. I. Davies, M. Baes, G. J. Bendo, S. Bianchi, D. J. Bomans, A., Boselli, M. Clemens, E. Corbelli, L. Cortese, A. Dariush, I. De Looze, S. di, Serego Alighieri, D. Fadda, J. Fritz, D. A. Garcia-Appadoo, G. Gavazzi, C., Giovanardi, M. Grossi, T. M. Hughes, L. K. Hunt
TL;DR
This paper presents the Herschel Virgo Cluster Survey's initial data, focusing on luminosity functions of optically bright galaxies in the cluster, revealing differences from less dense environments in galaxy populations.
Contribution
It provides the first luminosity functions for Virgo Cluster galaxies using Herschel data, highlighting environmental effects on galaxy luminosity distributions.
Findings
Virgo LFs lack numerous faint galaxies compared to less dense environments.
The LFs show fewer very luminous galaxies than previous surveys.
Data covers 100 to 500 microns for optically bright galaxies.
Abstract
We describe the Herschel Virgo Cluster Survey (HeViCS) and the first data obtained as part of the Science Demonstration Phase (SDP). The data cover a central 4x4 sq deg region of the cluster. We use SPIRE and PACS photometry data to produce 100, 160, 250, 350 and 500 micron luminosity functions (LFs) for optically bright galaxies that are selected at 500 micron and detected in all bands. We compare these LFs with those previously derived using IRAS, BLAST and Herschel-ATLAS data. The Virgo Cluster LFs do not have the large numbers of faint galaxies or examples of very luminous galaxies seen previously in surveys covering less dense environments.
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