Simultaneous Ubvy-Beta Photometry of Gp-Andromedae

Details Simultaneous Ubvy-Beta Photometry of Gp-Andromedae Simultaneous Ubvy-Beta Photometry of Gp-Andromedae

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as..101..421r&link_type=abstract

Astronomy and Astrophysics Supplement, Vol.101, NO.2/OCTII, P. 421, 1993

Astronomy and Astrophysics

Astrophysics

13

Stars: Variable, Stars: Δ Scu, Photometry

Scientific paper

Simultaneous uvbyβ photometric observations of the high amplitude δ Sct type star GP And are presented. Ten new times of light maxima have been obtained. Using the classical 0-C method, it is found that the pulsation of this star can be well described by means of a quadratic ephemeris with the period increasing at a rate of d P/Pdt = 13.0(±2.8)10-8 y-1 over the last nineteen years. Intrinsic b - y, m1 and c1 values are derived and the physical parameters of this star are determined.

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