What can we learn from Type Ia/II Supernovae rates at high-z ?

R. Sadat

What can we learn from Type Ia/II Supernovae rates at high-z ?

Astrophysics 2016-08-30 v1

Authors: R. Sadat

Abstract

We show how Type Ia/II supernova rates at various redshifts can be used to follow the cosmic star formation rate (CSFR) history. Using the recent e stimate of the Cosmic Star Formation (CSFR), we compute the predicted cosmic Type Ia/II supernovae rates. We show that while SNII rates provide a direct measurement of the instantaneous CSFR, the SNIa rate depends on the past history of the CSFR. This provides us with a new and independent diagnostic of the star formation rate. The comparison with the data are in good agreement with both local and high- $z$ measurement and provides an additional evid ence of the validity of the CSFR up to $z = 1$ , but suggests higer values at $z > 1$ co nsistent with the presence of extinction effects. Measurement of SNIa rate up to $z {\s im}$ 1 will be crucial for our understanding of the star formation history at early epo chs $z > 1$ . We also show that current observations on Type Ia supernovae rate already give us valubale information on the nature of their progenitors.

Keywords

cataclysmic variable accretion disk WZ Sagittae white dwarf superhumps

Cite

@article{arxiv.astro-ph/9809285,
  title  = {What can we learn from Type Ia/II Supernovae rates at high-z ?},
  author = {R. Sadat},
  journal= {arXiv preprint arXiv:astro-ph/9809285},
  year   = {2016}
}

Comments

4 pages, 3 figures, To appear in the Proceedings of the Xth Conference of Blois, "The Birth of Galaxies", held at Blois, France, June 28-July4, 1998

What can we learn from Type Ia/II Supernovae rates at high-z ?

Abstract

Keywords

Cite

Comments

Related papers