The Standardized Candle Method for Type II Plateau Supernovae

Details The Standardized Candle Method for Type II Plateau Supernovae The Standardized Candle Method for Type II Plateau Supernovae

2010-04-15

arxiv.org/abs/1004.2534v1

Astrophysical Journal 715 (2010) 833-853

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Accepted for publication in ApJ

Scientific paper

10.1088/0004-637X/715/2/833

In this paper we study the "standardized candle method" using a sample of 37 nearby (z<0.06) Type II plateau supernovae having BVRI photometry and optical spectroscopy. An analytic procedure is implemented to fit light curves, color curves, and velocity curves. We find that the V-I color toward the end of the plateau can be used to estimate the host-galaxy reddening with a precision of 0.2 mag. The correlation between plateau luminosity and expansion velocity previously reported in the literature is recovered. Using this relation and assuming a standard reddening law (Rv = 3.1), we obtain Hubble diagrams in the BVI bands with dispersions of ~0.4 mag. Allowing Rv to vary and minimizing the spread in the Hubble diagrams, we obtain a dispersion range of 0.25-0.30 mag, which implies that these objects can deliver relative distances with precisions of 12-14%. The resulting best-fit value of Rv is 1.4 +/- 0.1.

Affiliated with

Also associated with

No associations

Rating

The Standardized Candle Method for Type II Plateau Supernovae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Standardized Candle Method for Type II Plateau Supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Standardized Candle Method for Type II Plateau Supernovae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-379378