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THE EFFECT OF PROGENITOR AGE AND METALLICITY ON LUMINOSITY AND Ni-56 YIELD IN TYPE Ia SUPERNOVAE

Abstract:

Timmes et al. found that metallicity variations could theoretically account for a 25% variation in the mass of 56Ni synthesized in Type Ia supernovae (SNe Ia), and thus account for a large fraction of the scatter in observed SN Ia luminosities. Higher-metallicity progenitors are more neutron rich, producing more stable burning products relative to radioactive 56Ni. We develop a new method for estimating bolometric luminosity and 56Ni yield in SNe Ia and use it to test the theory with data fro...

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Publication status:
Published

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Publisher copy:
10.1088/0004-637X/691/1/661

Authors


Howell, DA More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics, REF-Physics
Le Borgne, D More by this author
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Publisher:
Institute of Physics Publishing
Journal:
ASTROPHYSICAL JOURNAL
Volume:
691
Issue:
1
Pages:
661-671
Publication date:
2009-01-20
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
URN:
uuid:bb47a4b8-175f-4229-a1b1-1f231cf66af2
Source identifiers:
12830
Local pid:
pubs:12830

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