Comparison of C-Rich Mira, Semiregular, and Irregular Variables
F. Kerschbaum, Peter Habison, R. Loidl, Hans Olofsson, Josef Hron · Symposium - International Astronomical Union · 2000
Carbon-rich Mira variables and semiregular variables of type SRa and SRb as well as irregular variables of type Lb are compared with each other in various aspects.These groups of AGB stars having different pulsational properties are selected from the GCVS and the IRAS Catalogue.Additional near infrared and mm-CO data are used, partly from our own observations.Special emphasis is put on the stars studied by Olofsson et al. (1993, ApJS, 87, 267).