Zero point of the supernova Hubble diagram

Details Zero point of the supernova Hubble diagram Zero point of the supernova Hubble diagram

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...368l..11f&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 368, Feb. 10, 1991, p. L11-L14. Research supported by the Alfred

Other

17

Calibrating, Hubble Diagram, Luminosity, Supernovae, Virgo Galactic Cluster, Cepheid Variables, Light Curve, Parallax, Planetary Nebulae

Scientific paper

An empirical calibration is presented for the absolute luminosity of type I supernovae using the most reliable distance estimates available to host galaxies of observed supernovae in the Virgo Cluster. Several estimates are presented for the absolute magnitude at maximum blue light; the best one, using planetary nebula distances, gives MB = -18.5 + or - 0.2, and the others give slightly different values consistent with the errors. When combined with published Hubble diagrams for distant supernovae, this calibration leads to a Hubble constant in the range H(0) = 75-100 km/s/Mpc.

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