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DOI: 10.1051/aas:2000300
Astron. Astrophys. Suppl. Ser. 147, 243-249
Period changes in W UMa-type eclipsing binaries: DK Cygni, V401 Cygni, AD Phoenicis and Y
Sextantis![[*]](/icons/foot_motif.gif)
M. Wolf1 - P. Molík1 - K. Hornoch1 - L. Sarounová 2
Send offprint request: M. Wolf
1 -
Astronomical Institute, Charles University Prague, CZ-180 00 Praha 8, V Holesovickách 2, Czech
Republic
e-mail: wolf@mbox.cesnet.cz
2 -
Astronomical Institute, Academy of Sciences of Czech Republic, CZ-251 65 Ondrejov, Czech Republic
Received July 21; accepted September 11, 2000
Abstract:
The period of AD Phe seems to be constant. Period changes of Y Sex could be explain by a light-time effect caused by a third body in an eccentric orbit with a period of 58 years.
Key words: stars: binaries: eclipsing -- stars: individual: DK Cyg -- stars: individual: V401 Cyg -- stars: individual: AD Phe -- stars: individual: Y Sex -- stars: fundamental parameters
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