Issue |
A&A
Volume 460, Number 3, December IV 2006
|
|
---|---|---|
Page(s) | 793 - 798 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361:20065514 | |
Published online | 26 September 2006 |
Consistent estimates of
Ni yields for type Ia supernovae
1
Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen Ø, Denmark e-mail: max@astro.ku.dk
2
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85741 Garching bei München, Germany
3
INAF - OATs, via Tiepolo, 11, 34131 Trieste, Italy e-mail: mazzali@mpa-garching.mpg.de
4
Stockholm Observatory, AlbaNova, Department of Astronomy, 106 91 Stockholm, Sweden e-mail: jesper@astro.su.se
5
INAF - Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, 35122 Padova, Italy e-mail: stefano.benetti@oapd.inaf.it
Received:
26
April
2006
Accepted:
4
September
2006
Aims.We present mass estimates for seventeen well-observed
type Ia supernovae determined by two independent methods.
Methods.Estimates of the mass for each type Ia supernova are determined from
(1) modeling of the late-time nebular spectrum and (2) through
the combination of the peak bolometric luminosity with Arnett's rule.
The attractiveness of this approach is that the comparison of estimated
masses circumvents errors associated with the uncertainty in the adopted values of reddening and distance.
Results.We demonstrate that these two methods provide consistent
estimates of the amount of synthesized.
We also find a strong correlation between the
derived
mass and the absolute B-band magnitude (MB).
Conclusions.Spectral synthesis can be used as a diagnostic to study the
explosion mechanism. By obtaining more nebular spectra the –MB correlation
can be calibrated, and be used to investigate any
potential systematic effects this relationship may have upon the
determination of cosmological parameters, and provide a new manner to
estimate extra-galactic distances of nearby type Ia supernovae.
Key words: stars: supernovae: general
© ESO, 2006
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