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- W4233652003 abstract "A search for variable stars in the globular cluster NGC 6544 has revealed only one possible short period variable within the tidal radius of the cluster. A search in NGC 6642 yielded 16 new RR Lyrae stars within the tidal radius and 5 new field RRs. The previously discovered (Hoffleit 1972) V1 is a slow variable, and V2 is an RR Lyrae star. Photometry of the variables within the tidal radius gives a mean B for the horizontal branch of < B > = 17.0 mag. With E(B – V) = 0.37 mag and (B – V) = 0.35 mag for RR Lyraes, a value for V (HB) = 16.3 mag is derived. This is about one mag fainter than previous estimates (Webbink 1985), and places NGC 6642 at a distance of approximately 7.9 kpc." @default.
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- W4233652003 date "1993-01-01" @default.
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- W4233652003 title "Search for Variables in the Galactic Globular Clusters NGC 6544 and NGC 6642" @default.
- W4233652003 doi "https://doi.org/10.1017/s0252921100117774" @default.
- W4233652003 hasPublicationYear "1993" @default.
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