A New Method to Derive the Distances of Spiral Galaxies

Details A New Method to Derive the Distances of Spiral Galaxies A New Method to Derive the Distances of Spiral Galaxies

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976msngr...6....9t&link_type=abstract

The Messenger, vol. 6, p. 9-10

Astronomy and Astrophysics

Astrophysics

Scientific paper

A new method to determine the distances of spiral galaxies has recently been proposed by R. B. Tully and J. R. Fisher (to be published in Astronomy and Astrophysics, 1976). Their method is remarkable for two reasons: (1) it uses a distance independent parameter which is measured at radio wavelengths (21 cm); so far radio astronomy has been slow in providing good distance determinations; and (2) the parameter correlates with the total optical luminosity of a spiral galaxy; up to now only few, if any, luminosity indicators, besides van den Bergh's luminosity classification, have been known for spiral galaxies.

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