Composite spectra Paper 7: HD 190361

Details Composite spectra Paper 7: HD 190361 Composite spectra Paper 7: HD 190361

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.285..472g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 285, Issue 3, pp. 472-478.

Astronomy and Astrophysics

Astronomy

2

Binaries, Spectroscopic: Stars, Individual, Hd190361

Scientific paper

HD 190361 is a composite-spectrum binary system in an orbit with a low eccentricity and a period of about 4 yr. We separate the spectra of the component stars and show them to be of types very similar to those in 31 Cyg, i.e. near K4Ib and B4IV-V. The relatively small velocity amplitude, together with the rapid rotation and early spectral type of the hotter star, conspire to make the measurement of the radial velocity of the latter somewhat imprecise, but we derive a mass ratio of about 1.8 and deduce that the system is viewed at an inclination of about 36 deg.

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