Orbital Dynamics Analysis of Binary Systems in Mass-Loss Scenarios

Details Orbital Dynamics Analysis of Binary Systems in Mass-Loss Scenarios Orbital Dynamics Analysis of Binary Systems in Mass-Loss Scenarios

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003rmxac..15..223a&link_type=abstract

Winds, Bubbles, and Explosions: a conference to honor John Dyson, Pátzcuaro, Michoacán, México, September 9-13, 2002 (Eds. S. J.

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Binaries: General, Stars: Mass Loss

Scientific paper

We analyze the dynamics of binary systems with time-dependent mass loss and periastron effect-i.e., a supposed enhanced mass loss during periastron passages-by means of analytical and numerical techniques. In this way, we study the variation of orbital elements in terms of three small parameters, which describe the time-dependent mass loss ( alpha1() , alpha2() ) and the mass loss by periastron effect ( beta ). It is demonstrated that the latter gives rise to secular variations in some orbital elements: eccentricity, semi-major axis and period. Lastly, we suggest that some of the anomalous behavior observed in some close binaries can be explained by taking into account the periastron effect. As a demonstration some practical applications are also included.

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