The Cepheid distance scale - an unorthodox view

Details The Cepheid distance scale - an unorthodox view The Cepheid distance scale - an unorthodox view

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...229..143s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 229, no. 1, March 1990, p. 143-151.

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12

Cepheid Variables, Computational Astrophysics, Astronomical Photography, Distance, Infrared Spectra, Interstellar Extinction, Metallicity, Stellar Oscillations

Scientific paper

The intrinsic properties of classical Cepheids are reinvestigated, with particular attention given to the period-luminosity-color (PLC) relation. It is shown that the Bosheit function for the PLC relation is well suited for an unbiased estimate of intrinsic (color coefficient beta, strip-width) and extrinsic (photometric errors, reddening) Cepheid properties. Applied to photoelectric and photographic LMC photometry, the Bosheit function yields a value of beta of about 3, as compared with the recently reported figure of beta = 2.3. The theoretical PLC relation and its strong metallicity-dependence is discussed.

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