Two-colour observations of RR Lyrae variables

Details Two-colour observations of RR Lyrae variables Two-colour observations of RR Lyrae variables

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975obs....95...44p&link_type=abstract

The Observatory, vol. 95, Apr. 1975, p. 44-50.

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Astronomical Photometry, Cepheid Variables, Giant Stars, Light Curve, Stellar Spectrophotometry, Astronomical Catalogs, Brightness Discrimination, Computer Programs, Photomultiplier Tubes, Star Clusters, Stellar Luminosity, Telescopes, Ubv Spectra

Scientific paper

Light curves, periods, ephemerides, and finding charts are presented for four RR Lyrae stars (SV Volantis, DH Virginis, GS Hydrae, and VX Sculptoris) observed in the V and B bands at Sutherland, South Africa. The periods were determined by computer and the mean radii were derived using the modified Baade-Wesselink method of Woolley and Savage. The results show that the light curve of SV Volantis appears not to repeat from cycle to cycle and that the other three stars are ordinary a-type RR Lyrae variables. The B magnitude of VX Sculptoris is found to be fainter than that given in the General Catalog of Variable Stars.

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