New times of the minima and light elements of SW Lacertae

Details New times of the minima and light elements of SW Lacertae New times of the minima and light elements of SW Lacertae

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.188..117e&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 188, no. 1, Feb. 1992, p. 117-126.

Astronomy and Astrophysics

Astrophysics

1

Eclipsing Binary Stars, Ephemeris Time, Light Curve, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Least Squares Method, Orbital Elements

Scientific paper

SW Lacertae is a short-period variable star of the W UMa-type. A total of 261 photoelectric observations for each U, B, and V filter were obtained in 1986 while 522 photoelectric observations for each B and V filter were obtained in 1987. All these observations were transformed to the U, B, and V colors of the UBV standard system. Nine light curves for primary and secondary eclipses were obtained, their times of minima were determined and a new linear ephemeris was obtained. The period changes of the system were also discussed.

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