In:
Symposium - International Astronomical Union, Cambridge University Press (CUP), Vol. 87 ( 1980), p. 487-493
Abstract:
Observations have been made of J=2-1 CO in eleven circumstellar clouds including seven carbon stars and four oxygen-rich stars. Observations in four sources, including IRC+10216 have already been published (Wannier et al . 1979, henceforth Paper I) and the remaining observations are being prepared for publication (Knapp et al . 1980, henceforth Paper II). Several results are discussed below with special emphasis on the implications for two sources, namely IRC+10216 and Mira (o Ceti). The observations of IRC+10216 show CO emission over a diameter of 6 arcmin (∼ 0.5pc), a result suggesting a very large mass-loss rate. Mira is unique among the objects studied in displaying a small CO opacity and a high CO excitation temperature. It is suggested that this heating results from the orbital velocity of Mira due to its close binary companion.
Type of Medium:
Online Resource
ISSN:
0074-1809
DOI:
10.1017/S0074180900073101
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
1980
SSG:
16,12
Permalink