No secular change in the value of the photometric period of AG Pegasi

Details No secular change in the value of the photometric period of AG Pegasi No secular change in the value of the photometric period of AG Pegasi

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990baicz..41..131k&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 41, no. 2, March 1990, p. 131-136.

Astronomy and Astrophysics

Astronomy

5

Astronomical Photometry, Least Squares Method, Light Curve, Secular Variations, Stellar Orbits, Symbiotic Stars, Cool Stars, Red Giant Stars, Roche Limit, Stellar Magnitude

Scientific paper

A data set consisting of 890 photographic and photoelectric observations of AG Peg obtained between 1928 and 1988 are analyzed in order to determine the photometric period of the star. The data set includes eight photoelectric observations that have not been previously reported. The least-squares solution produced the ephemeris for the time of the light curve maxima, T(max) = J.D. 2,438,608.05 (+/- 2.64) + 812.90 (d) E. (+/- 0.41). The analysis shows that the period has been constant over the last 60 years.

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