Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89.1005w&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 89, July 1984, p. 1005-1014. Research supported by the Natural Sciences and Engineer
Astronomy and Astrophysics
Astronomy
15
Globular Clusters, Stellar Magnitude, Variable Stars, Astronomical Photography, Irregular Variable Stars, Light Curve, Stellar Spectrophotometry
Scientific paper
Magnitudes for 24 variables have been measured on plates of M28 taken from 1974 through 1983. The variables include 16 RR Lyrae stars, two W Virginis stars, one RV Tauri star, four red irregular variables and one U Geminorum star whose cluster membership has yet to be determined. Light curves have been constructed for the 19 periodic variables. The average length of period for the nine RRab's which are believed to be cluster members is 0.586 days which appears to be intermediate between the average values for Oosterhoff type I and type II clusters. Since only three RRc's have been found, the cluster is tentatively classified as type I. The uncertainty in Oosterhoff type as well as the stronger than expected TiO bands found in some variables by Lloyd Evans indicates that this is a cluster worth further study.
Sawyer Hogg Helen
Wehlau Ainelia
No associations
LandOfFree
Variable stars in the globular cluster Messier 28 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Variable stars in the globular cluster Messier 28, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable stars in the globular cluster Messier 28 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1704216