The luminosity of supernovae of type Ia from tip of the red-giant branch distances and the value of H0

Distances from the tip of the red-giant branch (TRGB) in the halo population of galaxies – calibrated through RR Lyr stars as well as tied to Hipparcos parallaxes and further supported by stellar models – are used to determine the luminosity of six nearby type Ia supernovae (SN 2011fe, 2007sr, 1998b...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2013-01, Vol.549
Main Authors: Tammann, G. A., Reindl, B.
Format: Article
Language:English
Subjects:
cosmological parameters
distance scale
galaxies: clusters: individual: M101
galaxies: distances and redshifts
supernovae: general
Online Access:Get full text
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Summary:Distances from the tip of the red-giant branch (TRGB) in the halo population of galaxies – calibrated through RR Lyr stars as well as tied to Hipparcos parallaxes and further supported by stellar models – are used to determine the luminosity of six nearby type Ia supernovae (SN 2011fe, 2007sr, 1998bu, 1989B, 1972E, and 1937C). The result is ⟨ McorrV ⟩ = -19.41 ± 0.05. If this value is applied to 62 SNe Ia with 3000 
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/201219671