Concerning the incidence of duplicity among cepheid variables

Details Concerning the incidence of duplicity among cepheid variables Concerning the incidence of duplicity among cepheid variables

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..315m&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, June 1980, p. 315-318. Research supported by the Natural Sciences an

Astronomy and Astrophysics

Astronomy

34

Cepheid Variables, Companion Stars, Stellar Spectrophotometry, Color, Luminous Intensity, Stellar Luminosity

Scientific paper

A 'phase-shift' technique for detecting photometric companions to cepheids is applied to 202 variables. The inferred incidence of duplicity is 35 plus or minus 5%. An earlier 'color-color loop' method suggested 20%-27% duplicity. However, when positive results are required of both methods for a given star, the incidence falls to 15%. This lack of detailed agreement, as well as an apparent correlation of duplicity with period, suggests neither method is infallible.

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