UBV photometry of a new RR Lyrae star in Leo

Details UBV photometry of a new RR Lyrae star in Leo UBV photometry of a new RR Lyrae star in Leo

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985acasn..26..301t&link_type=abstract

(Acta Astronomica Sinica, vol. 26, no. 4, 1985, p. 301-303) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 10, June 1

Astronomy and Astrophysics

Astrophysics

Giant Stars, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Color-Magnitude Diagram, Light Curve, Star Clusters

Scientific paper

A new RR Lyrae star in Leo, discovered by Huruhuta (1983), was observed in February, March, and May 1984 using a UBV photometer attached to the 91-cm Reflector of McDonald Observatory. Results of about 420 observations show that the period is 0.67385 + or - 0.00001 d, instead of the 0402132 d, given by Huruhuta. The derived epoch formula magnitude and colors at maximum are, Max = JDH 2445 741.159 (+ or - 0.002) + 0.67385 E (+ or - 0.00001), V = 12.44, B - V = +0.10, U - B = -0.03. The amplitudes are Delta V = 1.10, Delta (B - V) = 0.34, Delta (U - B) = 0.21. Skewness of light curve, epsilon = 0.14. These values confirm that the star is an RR Lyrae variable.

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