Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12.1036c&link_type=abstract
The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August
Astronomy and Astrophysics
Astrophysics
Scientific paper
We have undertaken a program (1999 to present) with the Palomar Testbed Interferometer to measure the angular size variations, with respect to pulsational phase, of a group of about 50 mira variables, approximately 30 of which are M-types. While we have unambiguously detected the pulsation of the miras with phase (Creech-Eakman et al. 1999 and Thompson et al. 2001), our main goal with this study is to determine through direct detection methods whether mira variables pulsate in the fundamental or first-overtone mode. To this end, we use our angular diameter measurements with the best estimates of stellar distances to determine if a particular pulsation mode can be identified for the oxygen-rich stars in our sample.
Creech-Eakman Michelle J.
Thompson Rachel
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