Type Ia supernova progenitors and elemental abundance ratios

Details Type Ia supernova progenitors and elemental abundance ratios Type Ia supernova progenitors and elemental abundance ratios

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..586k&link_type=abstract

In: Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 J

Astronomy and Astrophysics

Astronomy

Stellar Abundances

Scientific paper

Elemental abundance ratios are much related to the progenitor model of Type Ia supernovae (SNe Ia). We make a comparison of the lifetime distribution function derived from several models of SNe Ia and evaluate the SN Ia models from several observational constraints. With our single-degenerate model the SN Ia rate in the system with [Fe/H] <˜ -1 is supposed to be very small. Such metallicity effect may conflict with [alpha/Fe] observed in the Damped Ly alpha systems (DLAs) and dwarf spheroidal galaxies (dSphs). However both theoretically and observationally SNe Ia should increase [Mn/Fe]. From the abundance pattern from O to Zn we argue that low [alpha/Fe] observed in the DLAs and dSphs is caused not by SNe Ia but by low-mass supernovae (13-15 M&sun;) because their [Mn/Fe] is as low as the Milky Way halo stars.

Affiliated with

Also associated with

No associations

Rating

Type Ia supernova progenitors and elemental abundance ratios 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 Type Ia supernova progenitors and elemental abundance ratios, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Type Ia supernova progenitors and elemental abundance ratios will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-805665