Type Ia supernova rate at a redshift of ~0.1
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Date
Authors
Blanc, G.
Afonso, C.
Alard, C.
Albert, J. N.
Aldering, G.
Amadon, A.
Andersen, J.
Ansari, R.
Aubourg, E.
Balland, C.
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Springer
Abstract
We present the type la rate measurement based on two EROS supernova search campaigns (in 1999 and 2000). Sixteen supernovae identified as type la were discovered. The measurement of the detection efficiency, using a Monte Carlo simulation, provides the type la supernova explosion rate at a redshift ∼0.13. The result is 0.125 -0.034-0.028+0.044+0.028 h 702 SNu where 1 SNu= 1 SN / 10 10 L ⊙B / century. This value is compatible with the previous EROS measurement (Hardin et al. 2000), done with a much smaller sample, at a similar redshift. Comparison with other values at different redshifts suggests an evolution of the type la supernova rate.
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Keywords
Cosmology:miscellaneous, Galaxies: evolution, Methods:observational, Stars:supernovae:general, Charge coupled devices, Computer simulation, Cosmic rays, Galaxies, Monte Carlo methods, Nuclear explosions, Thermonuclear reactions, Astrophysics Cosmology: miscellaneous, Galaxies: evolution, Methods: observational, Stars: supernovae: general
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Astronomy and Astrophysics
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Restricted until
2037-12-31
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