Contribution a l'etude des binaires de types F, G, K, M. VI. HD 79968, binaire spectroscopique a raies doubles. Contribution to the study of F, G, K, M binaries. VI. HD 79968, double-lined spectroscopic binary.

Details Contribution a l'etude des binaires de types F, G, K, M. VI. HD 79968, binaire spectroscopique a raies doubles. Contribution to the study of F, G, K, M binaries. VI. HD 79968, double-lined spectroscopic binary. Contribution a l'etude des binaires de types F, G, K, M. VI. HD 79968, binaire spectroscopique a raies doubles. Contribution to the study of F, G, K, M binaries. VI. HD 79968, double-lined spectroscopic binary.

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26as..111..255g&link_type=abstract

Astronomy and Astrophysics Supplement, v.111, p.255

Astronomy and Astrophysics

Astrophysics

1

Stars: Individual: Hd 79968, Stars: Spectroscopic Binaries, Stars: Fundamental Parameters

Scientific paper

HD 79968 has been known for some time as a spectroscopic binary, but the orbit of this system remained unknown until now. Our observations, carried out at Observatoire de Haute-Provence with the CORAVEL spectrometer, lead to the following orbital elements: P=30.50253days; T=2448008.696JD; ω= 65^o^.8; e=0.187; K_1_=40.3km/s; K_2_=45.3km/s; V_0_=+25.3km/s; a_1_sin i=16.6Gm; a_2_sin i=18.7Gm; M_1_sin^3^i=1.00Msun_; M_2_sin^3^i=0.89Msun_. The ratio of the correlation dip areas indicates a magnitude difference {DELTA} m_B_~0.9 between the components. The observational data (M_1,2_sin^3^i, {DELTA}m, M_V_, B-V and the spectrum) are consistent with spectral types G3-4V and G9V for the primary and secondary components respectively. The M_1_sin^3^i value, one solar mass, suggests strongly that i should be near 90^o^. This detached system (a=50Rsun_) thus might be an eclipsing one.

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