Pulsation Mode Switching in the Small-Amplitude Red Variable W Bootis

Details Pulsation Mode Switching in the Small-Amplitude Red Variable W Bootis Pulsation Mode Switching in the Small-Amplitude Red Variable W Bootis

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pasp..108..847p&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.108, p.847

Astronomy and Astrophysics

Astronomy

16

Stars: Individual: W Bootis, Stars: Oscillations

Scientific paper

W Bootis, a small-amplitude (0.2 mag in V) red variable, pulsated with a period of 25 days from 1966 (or earlier) to 1990. From 1991 to 1994, its period was about 50 days, except in 1993 when its period was about 35 days superimposed on a long-term (> 200 days) variation. There was no evidence for the 25-day period after 1990. The most likely explanation is that the pulsation mode changed, possibly from 4th to 2nd overtone. (SECTION: Stars)

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