Five supernova survey galaxies in the southern hemisphere. II. the supernova rates

Five supernova survey galaxies in the southern hemisphere. II. the supernova rates

Based on the database compiled in the first article of this series, with 56 SN events discovered in 3838 galaxies of the southern hemisphere, we compute the rate of supernovae (SNe) of different types along the Hubble sequence normalized to the optical and near-infrared luminosities as well as to th...

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Bibliographic Details
Published in:Astrophysics Vol. 54; no. 3; pp. 301 - 314
Main Authors: Hakobyan, A. A., Petrosian, A. R., Mamon, G. A., McLean, B., Kunth, D., Turatto, M., Cappellaro, E., Mannucci, F., Allen, R. J., Panagia, N., Valle, and M. Della
Format: Journal Article
Language:English
Published: Boston Springer US 01-09-2011
Springer
Springer Nature B.V
Subjects:
Astronomy
Astrophysics
Astrophysics and Astroparticles
Astrophysics and Cosmology
Galaxies
Observations and Techniques
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Star & galaxy formation
Stars & galaxies
Supernovae
Surveys
galaxies
supernovae
stellar content
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Summary:Based on the database compiled in the first article of this series, with 56 SN events discovered in 3838 galaxies of the southern hemisphere, we compute the rate of supernovae (SNe) of different types along the Hubble sequence normalized to the optical and near-infrared luminosities as well as to the stellar mass of the galaxies. We find that the rates of all SN types show a dependence on both morphology and colors of the galaxies, and therefore, on the star-formation activity. The rate of core-collapse (CC) SNe is confirmed to be closely related to the Star Formation Rate (SFR) and only indirectly to the total mass of the galaxies. The rate of SNe Ia can be explained by assuming that at least 15% of Ia events in spiral galaxies originates in relatively young stellar populations. We find that the rates show no modulation with nuclear activity or environment. The ratio of SN rates between types Ib/c and II shows no trend with spiral type.
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ISSN:0571-7256
1573-8191
DOI:10.1007/s10511-011-9180-y