On the use of Type I supernovae to determine the Hubble constant
- 1 March 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 186 (3) , 609-616
- https://doi.org/10.1093/mnras/186.3.609
Abstract
The derivation of the value of H0 from composite photometric and spectroscopic data on Type I supernovae is improved in two ways. The formal result and its internal rms error become H0 = 56 ± 15 km s−1 Mpc−1. Comparison of temperatures inferred both from B−V colours and from fitting blackbody curves to flux distributions indicates that the observed B−V colours should be corrected to allow for the presence of lines. The correction would reduce the value obtained for H0. Several additional possibilities of systematic error are discussed.Keywords
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