Investigations on binaries with more massive invisible components. I - The H-deficient system KS Persei

Details Investigations on binaries with more massive invisible components. I - The H-deficient system KS Persei Investigations on binaries with more massive invisible components. I - The H-deficient system KS Persei

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26as...75..157m&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 75, no. 1, Oct. 1988, p. 157-162. CNR-supported research; Mi

Astronomy and Astrophysics

Astrophysics

5

Binary Stars, Companion Stars, Stellar Motions, Variable Stars, Hot Stars, Orbital Elements, Radial Velocity, Stellar Mass, Supergiant Stars

Scientific paper

More accurate spectroscopic elements of the hydrogen-deficient variable star KS Persei have been determined from new and old radial velocities. A lower mass function of 3.6 + or - 0.4 solar masses is obtained along with improved orbital elements, including a period = 362.8 + or - 0.1 d, periastron passage = J.D. 2435152 + or - 5, e = 0.30 + or - 0.03, omega = 277 deg + or - 6 deg, a sin i = 228 + or - 8 x 10 to the 6th km. Its more massive, invisible companion, formerly proposed as a black hole candidate, is now recognized as a hot star.

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