Asymmetric outflow in the molecular envelope of Mira

Details Asymmetric outflow in the molecular envelope of Mira Asymmetric outflow in the molecular envelope of Mira

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...364l...9p&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 364, Nov. 20, 1990, p. L9-L12. Research supported by CICYT.

Astronomy and Astrophysics

Astrophysics

36

Mira Variables, Red Shift, Stellar Envelopes, Stellar Mass Ejection, Stellar Winds, Energy Sources, Kinetic Energy, Main Sequence Stars

Scientific paper

The Owens Valley millimeter interferometer has been used to map CO emission at 6 arcsec resolution in the molecular envelope of Mira. These observations have revealed one and possibly two lobes of an axial gas outflow in Mira's envelope that is clearly resolved in space and in velocity. The blueshifted emission is centered 3 arcsec (3.5 x 10 to the 15th cm) north of the star position, and it extends mainly in the E-W direction, with a size 2 x 10 to the 16th cm. Redshifted emission south of the star position is detected at a 4 sigma level. If the asymmetric outflow is interpreted as a bipolar outflow, it is the slowest found to date, and its kinetic energy is much smaller than that which is found in bipolar outflows of more evolved objects.

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