The search, discovery, and use of Cepheid variables as distance indicators - Past procedures and future strategies

Details The search, discovery, and use of Cepheid variables as distance indicators - Past procedures and future strategies The search, discovery, and use of Cepheid variables as distance indicators - Past procedures and future strategies

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.1104m&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, June 1985, p. 1104-1112. Research supported by the California Institute of Techn

Astronomy and Astrophysics

Astronomy

16

Astrometry, Cepheid Variables, Distance, Galaxies, Light Curve, Reference Stars, Color-Magnitude Diagram, Stellar Luminosity, Stellar Magnitude

Scientific paper

Studies of the periods and magnitudes of Cepheids in external galaxies are critically reviewed in the context of distance determinations. An important property of Cepheid light curves is identified, namely, that despite differing amplitudes and periods, the decline rate of each Cepheid as a function of phase is approximately constant. Making use of this property, and the tight correlation of color and luminosity with phase, a strategy for future distance-scale determinations is suggested. The method outlined has the potential for producing distances with better accuracy than the existing classical Cepheid studies, while also considerably decreasing the required amount of telescope time.

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