Photographic observations of suspected unusual variables in M4

Details Photographic observations of suspected unusual variables in M4 Photographic observations of suspected unusual variables in M4

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981acaps...1..311y&link_type=abstract

(Acta Astrophysica Sinica, vol. 1, 1981, p. 311-316.) Chinese Astronomy and Astrophysics, vol. 5, Dec. 1981, p. 476-479. Transl

Astronomy and Astrophysics

Astrophysics

4

Astronomical Photography, Electrophotometry, Globular Clusters, Light Curve, Stellar Luminosity, Variable Stars, Fourier Analysis, Periodic Variations, Photoelectric Emission, Red Giant Stars, Stellar Evolution

Scientific paper

ZB44 = G512, located at the top of the giant branch of M4, is observed photoelectrically with a 60-cm telescope to confirm the existence of fast light variations, especially at wavelengths around 6250 A. The abnormal variables ZB38 = G30 and ZB39 = 3327 are also observed photoelectrically. Results confirm that a group of abnormal variable stars, which may all be field stars, exists in the direction of M4.

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