Cepheid distances from blue main-sequence companions

Details Cepheid distances from blue main-sequence companions Cepheid distances from blue main-sequence companions

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...296..169b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 1, 1985, p. 169-174.

Astronomy and Astrophysics

Astrophysics

19

Binary Stars, Cepheid Variables, Main Sequence Stars, Stellar Atmospheres, Stellar Spectrophotometry, Blue Stars, Companion Stars, Stellar Models, Stellar Oscillations

Scientific paper

The author determines the absolute visual magnitudes of main-sequence Cepheid companions from their effective temperatures. These are obtained by comparing the measured relative energy distributions with model atmosphere energy distributions. Assuming an average galactic extinction law, it is found that the distance moduli for the Cepheids should be smaller by Δ(mv-Mv) = -0.5 as compared to the Sandage-Tammann relation.

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