The mass of the classical cepheid SU Cygni

Details The mass of the classical cepheid SU Cygni The mass of the classical cepheid SU Cygni

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..405r&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 405-40

Astronomy and Astrophysics

Astrophysics

1

Cepheid Variables, Stellar Evolution, Stellar Mass, Blue Stars, Companion Stars, Iue, Radial Velocity, Stellar Spectra

Scientific paper

Radial velocity differences between the classical Cepheid SU Cyg and a hot companion have been measured from IUE high dispersion spectra. The blue star is itself a close binary. The triple system solution provides the mass ratio of the Cepheid to the masses of the pair of companions. The masses of the companions are inferred from the low dispersion IUE spectra. The mass derived for the Cepheid is 6.3 M_sun;, with a range from 7.0 M_sun; to 5.9 M_sun;, which is very close to the evolutionary mass.

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