Hubble's constant determined using very-long baseline interferometry of a supernova

Details Hubble's constant determined using very-long baseline interferometry of a supernova Hubble's constant determined using very-long baseline interferometry of a supernova

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.318...25b&link_type=abstract

Nature (ISSN 0028-0836), vol. 318, Nov. 7, 1985, p. 25-30.

Astronomy and Astrophysics

Astronomy

47

Hubble Constant, Radio Astronomy, Stellar Mass Ejection, Stellar Spectrophotometry, Supernovae, Very Long Base Interferometry, Angular Velocity, Astrometry, Error Analysis, Stellar Atmospheres, Time Dependence, Virgo Galactic Cluster

Scientific paper

Determination of the angular expansion velocity of the radiosphere of the supernova SN1979c in the galaxy M100 of the Virgo cluster, combined with determination of the value of the radial expansion velocity of the photosphere, has been found to yield an estimate of the distance to the Virgo cluster of 19 + 8 or -6 Mpc and of the Hubble constant of 65 + 35 or -25 km/s/Mpc. The VLBI observations on which the determinations are based are described and the time and frequency dependence o the angular diameter determinations are discussed. The reported uncertainties are based on conservative but reasonable estimates of all significant errors and are intended to represent 90 percent confidence intervals.

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