On the Cepheid-based extragalactic distance scale

Details On the Cepheid-based extragalactic distance scale On the Cepheid-based extragalactic distance scale

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997azh....74..325e&link_type=abstract

Astronomicheskij Zhurnal, vol. 74, p. 325

Astronomy and Astrophysics

Astronomy

1

Cepheid Variables, Hubble Constant, Extragalactic Radio Sources, Galactic Structure, Virgo Galactic Cluster, Luminosity, Galactic Clusters

Scientific paper

The distance moduli of several nearby galaxies determined from RR Lyrae stars and Cepheids differ by 0.2-0.3 m. It is argued that this discrepancy can be removed most effectively by adopting appropriately lower Cepheid luminosities. This would imply a reduction of the distances to galaxies in the Virgo cluster, and a corresponding increase in the Hubble constant based on the Cepheid distance to this cluster.

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