The extragalactic distance scale

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astrometry, Cepheid Variables, Cosmology, Distance, Hubble Constant, Calibrating, Globular Clusters, Interstellar Extinction, Local Group (Astronomy), Magellanic Clouds, Milky Way Galaxy, Novae, Supernovae

Scientific paper

Recent advances in the determination of the extragalactic distance scale are discussed, reviewing the results of observational and theoretical investigations from the period 1983-1987. Consideration is given to the galactic calibration of the Cepheids, the extension of the nova method to the Virgo cluster, improvements in the supernova distance method, the reasons why the Tully-Fisher method gives distances shorter than those of other techniques, and a modified Faber-Jackson distance method for elliptical galaxies. Numerical results are compiled in extensive tables and graphs, and it is concluded that only minor corrections to the cosmological distance ladder of Rowan-Robinson (1985) are required.

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