Dynamical consequences of star collisions for core-envelope structure in red giants

Details Dynamical consequences of star collisions for core-envelope structure in red giants Dynamical consequences of star collisions for core-envelope structure in red giants

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...288..248t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 1, 1985, p. 248-251. Research supported by the Pontificia Univers

Other

11

Collisions, Red Giant Stars, Stellar Cores, Stellar Envelopes, Stellar Motions, Stellar Structure, Galactic Nuclei, Late Stars, Main Sequence Stars

Scientific paper

The possibility of a spatial core-envelope separation in a red giant caused by its collision with a main-sequence star is discussed. This separation, which is shown to occur, at least, in collisions with an impact parameter less than ≡50 R_sun; and with an impact velocity less than 360 km s-1, leads to the dispersion of the entire envelope with typical velocities of several hundreds of kilometers per second. It is suggested that this mechanism for the dispersion of stellar material might play an important role in the central part of galaxies and in other high star density environments.

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