Issue |
A&A
Volume 566, June 2014
|
|
---|---|---|
Article Number | A70 | |
Number of page(s) | 8 | |
Section | Extragalactic astronomy | |
DOI | https://doi.org/10.1051/0004-6361/201322747 | |
Published online | 17 June 2014 |
The bivariate K-band-submillimetre luminosity functions of the local HRS galaxy sample⋆,⋆⋆
1
European Southern Observatory,
Karl-Schwarzschild-Straße 2,
85748
Garching,
Germany
e-mail:
pandrean@eso.org
2
INAF – Istituto di Astrofisica e di Planetologia Spaziale, via del
Fosso del Cavaliere, 00133
Roma,
Italy
3
Laboratoire d’Astrophysique de Marseille – LAM, Université
d’Aix-Marseille & CNRS, UMR 7326, 38 rue F. Joliot-Curie, 13388
Marseille Cedex 13,
France
4
Centre for Astrophysics & Supercomputing, Swinburne
University of Technology, Mail H30
PO Box 218 Hawthorn, 3122
Victoria,
Australia
5
Chip Computers Consulting s.r.l., Viale Don L. Sturzo 82,
S.Liberale di Marcon, 30020
Venice,
Italy
6
Sterrenkundig Observatorium, Universiteit Gent Krijgslaan 281 S9,
9000
Gent,
Belgium
7
UK ALMA Regional Centre Node, Jodrell Bank Centre for
Astrophysics, School of Physics and Astronomy, University of Manchester,
Oxford Road,
Manchester
M13 9PL,
UK
Received:
24
September
2013
Accepted:
29
January
2014
We study the relationship between the K-band and the sub-millimetre (submm) emissions of nearby galaxies by computing the bivariate K-band-submm luminosity function (BLF) of the Herschel Reference Survey (HRS), a volume-limited sample observed in submm with Herschel/SPIRE. We derive the BLF from the K-band and submm cumulative distributions using a copula method. Using the BLF allows us to derive the relationship between the luminosities on more solid statistical ground. The analysis shows that over the whole HRS sample, no statistically meaningful conclusion can be derived for any relationship between the K-band and the submm luminosity. However, a very tight relationship between these luminosities is highlighted, by restricting our analysis to late-type galaxies. The luminosity function of late-type galaxies computed in the K-band and in the submm are dependent and the dependence is caused by the link, between the stellar mass and the cold dust mass, which has been already observed.
Key words: methods: data analysis / galaxies: luminosity function, mass function / submillimeter: galaxies / galaxies: statistics / methods: statistical
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Appendix A is available in electronic form at http://www.aanda.org
© ESO, 2014
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