EDP Sciences
Free Access
Volume 433, Number 3, April III 2005
Page(s) 807 - 814
Section Extragalactic astronomy
DOI https://doi.org/10.1051/0004-6361:20041411
Published online 29 March 2005

A&A 433, 807-814 (2005)
DOI: 10.1051/0004-6361:20041411

The supernova rate per unit mass

F. Mannucci1, M. Della Valle2, 3, N. Panagia3, E. Cappellaro4, G. Cresci5, R. Maiolino2, A. Petrosian6 and M. Turatto7

1  CNR - IRA, Largo E. Fermi 5, 50125 Firenze, Italy
    e-mail: filippo@arcetri.astro.it
2  INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy
3  Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
4  INAF, Osservatorio Astronomico di Capodimonte, salita Moiariello a Capodimonte 16, 80131 Napoli, Italy
5  Dipartimento di Astronomia, Universitá di Firenze, Largo E. Fermi 5, 50125, Firenze, Italy
6  Byurakan Astrophysical Observatory and Isaac Newton Institute of Chile, Armenian Branch, Byurakan 378433, Armenia
7  INAF, Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, 35122 Padova, Italy

(Received 4 June 2004 / Accepted 17 November 2004 )

We compute the rate of supernovae (SNe) of different types along the Hubble sequence normalized to the near-infrared luminosity and to the stellar mass of the parent galaxies. This is made possible by the new complete catalog of near-infrared galaxy magnitudes obtained by 2MASS. We find that the rates of all SN types, including Ia, Ib/c and II, show a sharp dependence on both the morphology and the (B-K) colors of the parent galaxies and, therefore, on the star formation activity. In particular we find, with a high statistical significance, that the type Ia rate in late type galaxies is a factor ~20 higher than in E/S0. Similarly, the type Ia rate in the galaxies bluer than B-K=2.6 is about a factor of 30 larger than in galaxies with B-K>4.1. These findings can be explained by assuming that a significant fraction of Ia events in late spirals/irregulars originates in a relatively young stellar component.

Key words: stars: supernovae: general -- infrared: galaxies

© ESO 2005

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.