A new light-time effect study of TX Herculis

Details A new light-time effect study of TX Herculis A new light-time effect study of TX Herculis

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004newa....9..265a&link_type=abstract

New Astronomy, Volume 9, Issue 4, p. 265-272.

Astronomy and Astrophysics

Astronomy

7

Binaries: Close, Stars: Individual: Tx Her

Scientific paper

A period study of the binary system TX Her based on the extensive series of minima times covering almost a century (95 years) indicates the periodic O-C variation for the system. This continuous oscillatory variation covers two maxima, about 16800 orbital periods, by the present observational data. It can be attributed to the light-time effect due to a third body with a period of 51.47+/-0.27 years in the system. The analysis yields a light-time semi-amplitude of 0.0143+/-0.0003 days and an orbital eccentricity of 0.81+/-0.02. Adopting the total mass of TX Her, the mass of the third body assumed in a co-planar orbit with the binary is M3=0.48+/-0.02Msolar and the semi-major axis of its orbit is a3=18.32+/-0.21 AU.

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