Abstract
view Abstract Citations (18) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The blue variables in Messier 22. Wehlau, A. ; Hogg, H. S. Abstract Magnitudes for 20 RR Lyrae variables and one short-period Cepheid were measured on plates of M22 taken from 1893 to 1975. Light curves were constructed for all but one variable, and period changes were determined for 15 variables. No RR(ab) variables considered cluster members show large period changes. The period-frequency diagram of the RR Lyrae variables in the cluster shows little change from that previously published. Attention is drawn to the few short-period Cepheids that are found in globular clusters, and their period frequency over all globular clusters is examined. Publication: The Astronomical Journal Pub Date: August 1978 DOI: 10.1086/112273 Bibcode: 1978AJ.....83..946W Keywords: Cepheid Variables; Globular Clusters; Light Curve; Stellar Spectrophotometry; Astronomical Spectroscopy; Graphs (Charts); Phase Shift; Astronomy; Blue Variables:Globular Clusters; Globular Clusters:RR Lyrae Stars; Light Curves:RR Lyrae Stars full text sources ADS | data products SIMBAD (32) Related Materials (1) Erratum: 1978AJ.....83.1468W
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