Low Hubble Constant from the Physics of Type Ia Supernovae

Details Low Hubble Constant from the Physics of Type Ia Supernovae Low Hubble Constant from the Physics of Type Ia Supernovae

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvl..75..394n&link_type=abstract

Physical Review Letters, Volume 75, Issue 3, July 17, 1995, pp.394-397

Physics

40

Scientific paper

Two physical methods for determining luminosities and distances of type Ia supernovae, the spectral fitting expanding atmosphere method and the 56Ni radioactivity method, depend on the interval between the times of explosion and maximum brightness, but in differing ways. By requiring consistency between the two methods we derive blue and visual absolute magnitudes MB~=MV~=-19.74+/-0.45 mag which, together with the ridge line of type Ia supernovae in the magnitude-redshift diagram, constrain the Hubble constant to be 50+12-10 km s-1 Mpc-1.

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