NGC 6649 UBV photometry (Walker+ 1987)

Details NGC 6649 UBV photometry (Walker+ 1987) NGC 6649 UBV photometry (Walker+ 1987)

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..72240061w&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/224/61. Originally published in: 1987MNRAS.224...61W

Physics

Clusters: Open, Stars: Variable, Photometry: Ccd

Scientific paper

A colour magnitude diagram to V=20 is given for 395 stars in the heavily reddened open cluster NGC 6649. The absorption-corrected distance modulus is 11.00+/-0.15mag (1585+/-110pc) assuming R(OB)=3.27+/-0.10 for NGC 6649 and based on a ZAMS with zero point referenced to a Pleiades distance modulus of 5.56mag. The range of reddening over the 5arcmin diameter of the cluster is {DELTA}E(B-V)=0.3mag. NGC 6649 contains the double mode Cepheid V367 Sct, which has =-3.80+/-0.06 and -=0.58+/-0.02. (1 data file).

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