VLA 6 CM continuum observations of OH/IR stars

Details VLA 6 CM continuum observations of OH/IR stars VLA 6 CM continuum observations of OH/IR stars

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...144..514h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 144, no. 2, March 1985, p. 514, 515. Research supported by the Stichting Astro

Astronomy and Astrophysics

Astrophysics

12

Giant Stars, Hydroxyl Emission, Infrared Stars, Radio Emission, Stellar Envelopes, Very Long Base Interferometry, Asymptotic Giant Branch Stars, Masers, Planetary Nebulae, Stellar Mass, Variable Stars

Scientific paper

A number of OH/IR stars with accurately known positions were searched for radio continuum emission at a wavelength of 6 cm (5 GHz). None were detected at a level of ≡0.1 mJy. The lack of detections in this and previous searches implies either that the transition time between the tip of the asymptotic giant branch, the locus of the OH/IR stars, and the planetary nebula stage is much shorter than the duration of the "superwind" phase, or that there is a noticeable difference between the OH/IR stars on the one hand and Vy2-2, the only known example of an object in the transition stage, on the other.

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