V79 in the globular cluster Messier 3 returns to fundamental mode

Details V79 in the globular cluster Messier 3 returns to fundamental mode V79 in the globular cluster Messier 3 returns to fundamental mode

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1120....1g&link_type=abstract

The Astronomer's Telegram, #1120

Astronomy and Astrophysics

Astronomy

2

Optical, Request For Observations, Globular Clusters, Variables

Scientific paper

V79 was known as an RRab type star or fundamental mode pulsator with the period of about 0.483 day during the century after its discovery by S.I.Bailey in 1895. In 1996 it was unexpectedly found to pulsate in double mode (J. Kaluzhny et al., 1998, MNRAS V.296, p.347). The first overtone with the period of 0.359 day became the dominant mode. The switch of mode occured in April 1992. This phenomenon was unprecedented for the class of RR Lyrae stars.

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