C.D.S. - SIMBAD4 rel 1.7 - 2021.01.18CET12:40:58

2000A&AS..144..317C - Astron. Astrophys., Suppl. Ser., 144, 317-321 (2000/June-1)

Contribution a l'etude des binaires des types F, G, K, M. VIII. HD 195850 et HD 201193, binaires spectroscopiques a raies doubles Contribution to the study of F, G, K, M binaries. VIII. HD 195850 and HD 201193, double-lined spectroscopic binaries.


Abstract (from CDS):

Radial-velocity observations of the double-lined spectroscopic binaries HD 195850 and HD 201193 have been carried out at the Observatoire de Haute-Provence with the CORAVEL instrument in order to determine their orbital elements. They are as follows o HD 195850: P=37.94106days; T=2444872.24HJD; ω=111.5°; e=0.185; K1=34.15km/s; K2=44.72km/s; V0=0.75km/s; a1sini=17.51Gm; a2sini=22.93Gm; M1sin3i=1.04M; M2sin3i=0.79M. o HD 201193: P=22.299540days; T=2448137.004HJD; ω=144.7°; e=0.388; K1=54.15km/s; K2=54.77km/s; V0=-13.01km/s; a1sini=15.31Gm; a2sini=15.48Gm; M1sin3i=1.179M; M2sin3i=1.165M. For HD 195850, we propose a F5V + G2V model on the basis of both the Hipparcos-measured parallax and the Δmv value, 1.1mag, deduced from the intensities of the correlation dips. HD 201193, for its part, is formed by two quasi-identical F6V stars. Stromgren photometric indices suggest the following physical parameters: Mv=3.6 ; Teff=6200K; logg=4.2. Using Schaller et al. (1992A&AS...96..269S) evolutionary tracks for stars of solar metallicity, we estimate M=1.25M for the mass of each component. This system should be somewhat evolved above the ZAMS, and the possibility of eclipses is, a priori, not excluded; it is likely that the components rotate in synchronism with the orbital motion.

Abstract Copyright:

Journal keyword(s): stars: individual: HD 195850, HD 201193 - binaries: spectroscopic - stars: fundamental parameters

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 HD 195850 SB* 20 20 43.7109867640 +82 22 04.974104192   7.49 7.02     F5IV 28 0
2 HD 201193 SB* 21 06 55.9872923513 +36 15 16.911369667   8.41 7.90     F8 14 0

    Equat.    Gal    SGal    Ecl

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