Period change in GP And

Details Period change in GP And Period change in GP And

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993dssn....6...10r&link_type=abstract

Delta Scuti Star Newsletter, Issue 6, p. 10-10.

Astronomy and Astrophysics

Astronomy

Scientific paper

GP And is a high amplitude d Scuti type star with V~10.m75, DV~0.m55, P=0.d0787 and spectral type A3 (Lopez de Coca et al. 1990, A & A 83, 51). To study the stability of its fundamental pulsation we have carried out simultaneous uvby photometry of this star in the years 1987 and 1992 at Sierra Nevada and Caltar Alto observatories, both in Spain. Ten new times of light maxima were obtained. In total, forty-one time s of light maxima (from 1973 to 1992, collected from Splittgerber 1976, Mitt. Veraend. Sterne 7, 137; Eggen 1978, IBVS 1517; Gieseking et al. 1979, A & AS 36, 457; Burchi et al. 1992, Mem. Soc. Astron. Ital. 63, 87 and us) were used to determinate the ephemeris of the light curve of GP And by means of the classical O-C method.

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