Photometric study of RS Gru and RY Lep

Details Photometric study of RS Gru and RY Lep Photometric study of RS Gru and RY Lep

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.277..965r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 277, Issue 3, pp. 965-970.

Astronomy and Astrophysics

Astronomy

10

Techniques: Photometric, Stars: Individual: Rs Gru, Stars: Individual: Ry Lep, Stars: Oscillations, Delta Scuti

Scientific paper

Simultaneous uv bybeta photometric observations of the high-amplitude delta Sct-type stars RS Gru and RY Lep have been collected and new times of light maxima have been obtained. Using the classical O-C method, it is found that the pulsation of RS Gru can be well described by means of a quadratic ephemeris with the period decreasing at a rate of dP/Pdt=-10.6(+/-0.8)10^-8 yr^-1 over more than 30 yr. Intrinsic b-y, m_1 and c_1 values are derived and the physical parameters of these two stars are determined.

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