Low amplitude new type variable stars in globular clusters

Details Low amplitude new type variable stars in globular clusters Low amplitude new type variable stars in globular clusters

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.210..163y&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 210, no. 1-2, p. 163-165 (IAU Colloquium 134)

Astronomy and Astrophysics

Astrophysics

1

Globular Clusters, Horizontal Branch Stars, Red Giant Stars, Stellar Oscillations, Variable Stars, Amplitudes, Stellar Spectrophotometry, Ubv Spectra

Scientific paper

Rapid progress in stellar pulsation research has presented many new challenges to traditional pulsation theory. The following progress made by us should belong to one of the new challenges: (1) there are many variable stars located at the Horizontal Branch (HB) but outside the instability strip with amplitude larger than 0.02 mag. (2) There are variable stars at the tip of the red giant branch (RGB) but leftward of the region occupied by long period variables. (3) There are variables located at the lower middle part of the RGB. (4) Are the constant stars located within the gap of HB really constant? and (5) the UV bright star K1082 in M15 is a short period variable indeed. This progress is briefly discussed.

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