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View Full Version : a new look at type 1a supernovae in spiral galaxies



trinitree88
2009-Sep-27, 04:32 PM
The authors take a slightly new look into type 1a "supes" in spirals. They find their ages a little differently. See:http://arxiv.org/PS_cache/arxiv/pdf/0909/0909.4293v1.pdf

Jerry
2009-Sep-27, 06:58 PM
What percentage of the local white dwarf population are binary wd pairs?

trinitree88
2009-Sep-27, 09:34 PM
What percentage of the local white dwarf population are binary wd pairs?

Jerry. I knew this would get your attention. 32+ or - 8% according to:http://www.iop.org/EJ/article/1742-6596/172/1/012022/jpconf9_172_012022.pdf?request-id=527755c1-cf0b-4f9e-8236-6e69b7d2802d


and 20-25 % here:http://www.iop.org/EJ/abstract/1538-3881/135/4/1225/


pete
edit. Jerry I think I answered the wrong question with the prior two....THIS answers your Q:http://adsabs.harvard.edu/abs/1990ApJ...353..215I
they're thinking ~ 10 % WD binaries