Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990acasn..31..237l&link_type=abstract
(Acta Astronomica Sinica, vol. 31, no. 3, 1990, p. 237-244) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 15, March
Astronomy and Astrophysics
Astrophysics
2
Eclipsing Binary Stars, Electrophotometry, Light Curve, Main Sequence Stars, Stellar Spectra, Energy Transfer, Radial Velocity, Stellar Evolution, Stellar Mass
Scientific paper
Photoelectric photometric observations of DF Hydrae were made in 1985, including two primary and two secondary minimum times. The period was found to be varying, and a new epoch formula is derived. An extensive search for the mass ratio q was carried out using the Wilson-Devinney method. The photometric solution is given. DF Hya is probably an unevolved contact binary.
Liu Qing-Yao
Wang Bi
Yang Yu-Lan
Zhang Yun-Lin
Zhang Zhou-Sheng
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