Other
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.247..684l&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 247, Dec. 15, 1990, p. 684-695.
Other
80
Blue Stars, Giant Stars, Globular Clusters, Infrared Radiation, Stellar Magnitude, Astronomical Photometry, Cepheid Variables, Horizontal Branch Stars, Infrared Photometry, Metallicity, Parallax
Scientific paper
The present determinations of log(period)-2.2 micron IR relationship for RR Lyr stars in eight clusters indicate no sign of scatter in the relation apart from observational error. It is suggested that very accurate relative distances, insensitive to both reddening errors and the effects of metallicity, are obtainable, although mass differences between variables in different clusters may still introduce relative distance uncertainties. A comparison of the absolute calibration of K magnitudes of two field stars obtained with an IR-flux method form of the Baade-Wesselink analysis to three other sets of distance measurements shows good agreement with those of Richer and Fahlman (1987).
Dixon Roberta
Fernley J. A.
Jameson Richard F.
Longmore Andrew J.
Skillen Ian
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