Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-16
Astron.Astrophys.433:807-814,2005
Astronomy and Astrophysics
Astrophysics
10 pages, A&A, in press
Scientific paper
10.1051/0004-6361:20041411
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.
Cappellaro Enrico
Cresci Giovanni
Della Valle Massimo
Maiolino Roberto
Mannucci Filippo
No associations
LandOfFree
The supernova rate per unit mass does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The supernova rate per unit mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The supernova rate per unit mass will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-211970