The bipolar outflow from the rotating carbon star, V Hydrae

Details The bipolar outflow from the rotating carbon star, V Hydrae The bipolar outflow from the rotating carbon star, V Hydrae

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328l..25k&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 328, May 1, 1988, p. L25-L28. NSF-NASA-supported research.

Astronomy and Astrophysics

Astronomy

52

Carbon Stars, Radio Astronomy, Red Giant Stars, Stellar Envelopes, Stellar Mass Ejection, Stellar Rotation, Anisotropy, Astronomical Maps, Bipolarity, Maser Outputs

Scientific paper

A high-resolution optical spectrum of the mass-losing red giant carbon star, V Hya, has been obtained, and the (C-12)O (J = 1-0) millimeter emission in the circumstellar envelope around this star has been mapped. It is found that the CO emission is extended, clearly anisotropic and can be interpreted as the superposition of an isotropic emission with that of a bipolar flow. The optical spectrum of the photosphere suggests that this star is rotating with v sin i between 10 and 20 km/s. These data are interpreted, together, to suggest that the bipolar nature of the outflow results from the flattening of the star induced by its rapid rotation.

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