Study of star V9 in 47 Tuc (Storm+ 1994)

Details Study of star V9 in 47 Tuc (Storm+ 1994) Study of star V9 in 47 Tuc (Storm+ 1994)

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..32910121s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/291/121. Originally published in: 1994A&A...291..121S

Physics

Stars: Variable, Photometry: Infrared, Radial Velocities

Scientific paper

We present an infrared K-band light curve and a radial velocity curve for the RR Lyrae star V9 in the metal rich globular cluster 47 Tucanae ([Fe/H]=-0.71). Combining these new data with the optical photometry presented in Carney et al. (1993PASP..105..294C), we perform a Baade-Wesselink analysis and derive a distance modulus of 47 Tuc of 13.23mag+/-0.17 and absolute mean magnitudes of =0.32mag and =-0.57mag for V9. We also present a well populated visual-infrared color-magnitude diagram of the cluster, reaching from the upper red giant branch to the subgiant branch. (3 data files).

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