Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.256..425b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 256, no. 3, June 1, 1992, p. 425-436.
Astronomy and Astrophysics
Astronomy
41
Cepheid Variables, Magellanic Clouds, Star Clusters, Stellar Composition, B Stars, Color-Magnitude Diagram, Eclipsing Binary Stars, Light Curve
Scientific paper
This paper presents the results of intensive CCD monitoring of the blue globular cluster NGC 330 in the SMC. From 137 V frames on six nights, many short-period variables are found. Most of these occur among the B-type stars. Since the cluster is very rich in Be stars, it is surmised that they are periodic Be stars (Lambda Eri variables). A few eclipsing binaries, including an early-type contact binary, were found. A Cepheid was found with a 1.19-d period, one of the shortest known in the Magellanic Clouds. Also found were some short-period late-type variables which cannot be classified. An interesting result is the absence of any Beta Cep variables with an amplitude in excess of 0.02 mag. This could be due to the low metal abundance or presumed rapid rotation of the early B-type stars.
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