The spectroscopic orbit of Gliese 171.2A

Details The spectroscopic orbit of Gliese 171.2A The spectroscopic orbit of Gliese 171.2A

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pazh...16.1026t&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 16, Nov. 1990, p. 1026-1029. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

2

Astronomical Spectroscopy, Red Dwarf Stars, Stellar Orbits, Orbital Elements, Radial Velocity

Scientific paper

Measurements of radial velocities taken with a correlation spectrometer and previously published observations are used to determine the spectroscopic orbit for the red dwarf with a very active chromosphere Gliese 171.2A = V833 Tau. The orbital period is determined to be P = 1.787979 d, the half amplitude of the radial velocity is calculated to be K1 = 10.32 km/s, and the velocity of the center of the mass is 35.19 km/s. The rotational velocity is found to be V sin i = 6.3 km/s, which gives an orbital inclination of 11-23 deg and the mass of the secondary component is estimated to be (0.14-0.33) solar mass.

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