Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...230l..13o&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 230, no. 2, April 1990, p. L13-L16.
Astronomy and Astrophysics
Astrophysics
111
Carbon Stars, Helium, Stellar Envelopes, Stellar Evolution, Stellar Luminosity, Stellar Mass Ejection, Astronomical Models, Asymptotic Giant Branch Stars, Interstellar Matter, Missing Mass (Astrophysics), Shell Stars, Stars: Carbon, Stars: Circumstellar Matter, Stars: Evolution Of, Stars: Mass Loss
Scientific paper
CO radio map data are presented for the bright carbon stars R Scl, U Ant, S Sct, and TT Cyg. The stars are found to have large circumstellar envelopes which, at least in the last three cases, are geometrically thin and clearly detached from the stars, indicating that the mass loss has occurred episodically. The possibility that these episodes are triggered by helium shell flashes is discussed and found consistent with existing data.
Carlstrom U.
Eriksson Kimmo
Gustafsson Bengt
Olofsson Hans
Willson Lee Anne
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