Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasp..104..159s&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 104, March 1992, p. 159-167. Research supported by Dani
Astronomy and Astrophysics
Astronomy
12
Globular Clusters, Infrared Imagery, Light Curve, Superhigh Frequencies, Astronomical Photometry, Infrared Telescopes
Scientific paper
K-band photometry for the RR Lyrae stars V1 and V3 in the extremely metal-poor globular cluster M92 (NGC 6341) and V8 and V28 in the intermediate-metallicity cluster M5 (NGC 5904) have been acquired during the 1987-1990 observing seasons, for use in a Baade-Wesselink analysis. A single-channel photometer as well as IR imagers have been used for the data acquisition, and the results from the different systems show good agreement. The reduction procedure for these data and the resulting light curves, good to better than 0.02 mag, based on 340, 541, 284, and 212 measurements for M92-V1, M92-V3, M5-V8, and M5-V28, respectively, are presented. Preliminary distance estimates for the clusters lead to values of (m-M)0 = 14.36 for M92 and (m-M)0 = 14.24 for M5.
Carney Bruce W.
Latham David W.
Storm Jesper
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