Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238..458m&link_type=abstract
Astrophysical Journal, Part 1, vol. 238, June 1, 1980, p. 458-470.
Astronomy and Astrophysics
Astronomy
148
Galactic Clusters, Infrared Astronomy, Virgo Galactic Cluster, Centimeter Waves, Globular Clusters, Hubble Diagram, Red Shift, Supernovae, Velocity Measurement
Scientific paper
Recently published 21 cm profiles and new infrared measurements are used to examine the luminosity/velocity-width relation for the Virgo cluster, especially with regard to possible morphological-type dependence. No support is found for the conclusions of Roberts (1978) that at a given luminosity earlier-type galaxies have larger velocity widths. A distance modulus of 30.98 plus or minus 0.09 is deduced for the Virgo cluster; the Hubble ratio for the cluster is found to be 65 plus or minus 4 km per s Mpc. It is concluded that there are no significant discrepancies between the Virgo distance given by the infrared Tully-Fisher (1977) technique and that given by any other method.
Aaronson Marc
Huchra John
Mould Jeremy
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