Variable stars in the globular cluster M53

Details Variable stars in the globular cluster M53 Variable stars in the globular cluster M53

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...358..547k&link_type=abstract

Astronomy and Astrophysics, v.358, p.547-552 (2000)

Astronomy and Astrophysics

Astrophysics

11

Stars: Population Ii, Stars: Variables: General, Galaxy: Globular Clusters: Individual: M53

Scientific paper

We present the results of the search for variable stars in the central region of rather poorly studied globular cluster M53. We have obtained good quality light curves of the 23 previously known RR Lyrae stars in this cluster. Periods of four of them have been determined for the first time. One RR Lyrae variable till now classified as a Bailey type RRc, turned out to be type RRab. We have also confirmed the variability of ten RR Lyrae candidates discovered by Kravtsov (\cite{kravtsov90}) and derived their periods. Moreover, we have found four new variables of this type in the core of the cluster. Altogether, the light curves have been obtained for 37 RR Lyrae stars. The total number of known RR Lyrae stars in M53 equals now to 59, 29 of them being of type RRab and remaining 30 of RRc. The mean period of all known RRab variables in M53 amounts to 0.65 +/- 0.07 d, and the average period for RRc variables is equal to 0.36 +/- 0.04 d. Mean V magnitudes and ranges of variations have been derived for 19 RR Lyrae stars. We also report the discovery of variations in six cluster bright giants. For these stars, however, our observations are not sufficient to state whether the variability is periodic or not.

Affiliated with

Also associated with

No associations

Rating

Variable stars in the globular cluster M53 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 M53, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable stars in the globular cluster M53 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1387149