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arXiv:astro-ph/9410054 (astro-ph)
[Submitted on 18 Oct 1994]

Title:Using SN Ia Light Curve Shapes to Measure The Hubble Constant

Authors:Adam G. Riess, William H. Press, Robert P. Kirshner
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Abstract: We present an empirical method which uses visual band light curve shapes (LCS) to estimate the luminosity of type Ia supernovae (SN Ia). This method is first applied to a ``training set'' of 8 SN Ia light curves with independent distance estimates to derive the correlation between the LCS and the luminosity. We employ a linear estimation algorithm of the type developed by Rybicki and Press (1992). The result is similar to that obtained by Hamuy et al. (1995a) with the advantage that LCS produces quantitative error estimates for the distance. We then examine the light curves for 13 SN Ia to determine the LCS distances of these supernovae. The Hubble diagram constructed using these LCS distances has a remarkably small dispersion of $\sigma_V$ = 0.21 mag. We use the light curve of SN 1972E and the Cepheid distance to NGC 5253 to derive $67 \pm 7 $ km s$^{-1}$ Mpc$^{-1}$ for the Hubble constant.
Comments: 10 pages + 2 figures, Postscript file includes text and figures, Submitted to Ap.J. (Letters), Harvard-Smithsonian Center for Astrophysics Preprint 4999
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/9410054
  (or arXiv:astro-ph/9410054v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/9410054
Journal reference: Astrophys.J. 438 (1995) L17-20
Related DOI: https://doi.org/10.1086/187704

Submission history

From: Bill Press [view email]
[v1] Tue, 18 Oct 1994 20:52:15 UTC (58 KB)
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