CO Observations of Semiregular Variables

Details CO Observations of Semiregular Variables CO Observations of Semiregular Variables

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224..499k&link_type=abstract

Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 499-500

Astronomy and Astrophysics

Astrophysics

Stars: Asymptotic Giant Branch, Stars: Variable, Stars: Mass-Loss

Scientific paper

O-rich SRa and SRb variables have been observed in the12CO(1-0) and (2-1) lines. A total of 40 stars were observed and 19 detections can be reported. The majority of the objects are weak in CO and have envelopes with small expansion velocities between 1.9 to 15.6 km/s. No correlation is found between period and expansion velocity for the short period objects whereas a trend may be present for the long period ones.

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