The local luminosity function of star-forming galaxies derived from the Planck Early Release Compact Source Catalogue

The Planck Early Release Compact Source Catalogue (ERCSC) has offered the first opportunity to accurately determine the luminosity function of dusty galaxies in the very local Universe (i.e. distances 100 Mpc), at several (sub-)millimetre wavelengths, using blindly selected samples of low-redshift sources, unaffected by cosmological evolution. This project, however, requires careful consideration of a variety of issues including the choice of the appropriate flux density measurement, the separation of dusty galaxies from radio sources and from Galactic sources, the correction for the CO emission, the effect of density inhomogeneities and more. We present estimates of the local luminosity functions at 857 GHz (350 m), 545 GHz (550 m) and 353 GHz (850 m) extending across the characteristic luminosity L , and a preliminary estimate over a limited luminosity range at 217 GHz (1382 m). At 850 m and for luminosities L L our results agree with previous estimates, derived from the Submillimeter Common-User Bolometer Array (SCUBA) Local Universe Galaxy Survey, but are higher than the latter at L L . We also find good agreement with estimates at 350 and 500 m based on preliminary Herschel survey data.