White dwarf - main sequence star collisions from wide triples in the field
Erez Michaely,
Michael Shara
Abstract:Multiple star systems interact strongly with Galactic field stars when the outer semimajor axis of a triple or multiple star is > 10 3 AU. Stable triples composed of two white-dwarfs (WD) and a low mass main sequence (MS) star in a wide outer orbit can thus be destabilized by gravitational interactions with random field stars. Such interactions excite the eccentricity of the distant third star sufficiently so that it begins to interact significantly with the inner binary. When this occurs the triple undergoes … Show more
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