CCD observations have been used to derive precise light curves for six of the previously known RR Lyrae variables in the Oosterhoff type II globular cluster M9 and to search for...

B2FIND10

CCD RV light curve of M15 RR Lyrae

Results of CCD photometry using V and R filters are reported for 33 RR Lyrae stars in M15. Applying the approach of Fourier decomposition of the light curves, the physical...

B2FIND10

Photographic observations of variable stars in M9

New observations from the southern hemisphere have been used to check the periods for the 11 RR Lyrae variables in and around the globular cluster Messier 9. The periods were...

B2FIND60

M9 RR Lyrae CCD observations