Period changes of AP Leonis and its photometric solution

Details Period changes of AP Leonis and its photometric solution Period changes of AP Leonis and its photometric solution

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acasn..33..131z&link_type=abstract

Acta Astronomica Sinica (ISSN 0001-5245), vol. 33, no. 2, p. 131-138.

Astronomy and Astrophysics

Astronomy

6

Astronomical Photometry, Binary Stars, Stellar Systems, Starspots, Stellar Mass, Stellar Temperature

Scientific paper

The photometry of AP Leonis is analyzed using the Wilson-Devinney program. The star is found to be an overcontact binary with an overcontact of 23.5 percent; the mass ratio is 0.301. There may be a starspot group in the low latitude region of the second component. The average temperature of the starspot is 1220 K lower than the surface temperature of the second component. An O-C diagram of the minimum times with period changes of sine and emphemeris is presented. The possibility of the existence of a third body in the system is noted.

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