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Measurement of Omega(m), Omega(Lambda) from a blind analysis of type Ia supernovae with CMAGIC: Using color information to verify the acceleration of the universe

Abstract:

We present measurements of Ωm and Ω Λ from a blind analysis of 21 high-redshift supemovae using a new technique (CMAGIC) for fitting the multicolor light curves of Type la supernovae, first introduced by Wang and coworkers. CMAGIC takes advantage of the remarkably simple behavior of Type la supernovae on color-magnitude diagrams and has several advantages over current techniques based on maximum magnitudes. Among these are a reduced sensitivity to host galaxy dust extinction, a shallower lumi...

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Publication status:
Published

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Publisher copy:
10.1086/503533

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Publisher:
Institute of Physics Publishing
Journal:
ASTROPHYSICAL JOURNAL
Volume:
644
Issue:
1
Pages:
1-20
Publication date:
2006-06-10
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
Source identifiers:
167325
Language:
English
Keywords:
Pubs id:
pubs:167325
UUID:
uuid:26c41bb9-df36-4b45-964a-44b6752bf30b
Local pid:
pubs:167325
Deposit date:
2012-12-19

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