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Quantitative comparison between type Ia supernova spectra at low and high redshifts: a case study

Abstract:

We develop a method to measure the strength of the absorption features in type la supernova (SN la) spectra and use it to make a quantitative comparisons between the spectra of type la supernovae at low and high redshifts. In this case study, we apply the method to 12 high-redshift (0.212 ≤ z ≤ 0.912) SNe la observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca II HandK, we show that the spectr...

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Publication status:
Published

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Publisher copy:
10.1051/0004-6361:20065400

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Journal:
ASTRONOMY and ASTROPHYSICS More from this journal
Volume:
470
Issue:
2
Pages:
411-424
Publication date:
2007-08-01
DOI:
EISSN:
1432-0746
ISSN:
0004-6361
Language:
English
Keywords:
Pubs id:
pubs:167323
UUID:
uuid:08fefc1a-6ebb-441c-a70a-9a1ef60d231a
Local pid:
pubs:167323
Source identifiers:
167323
Deposit date:
2012-12-19

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