The New Photometric Study of a Possible Three-body System AV CMi

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Authors	LIŠKA Jiří ZEJDA Miloslav LOMOZ František KUČÁKOVÁ Hana JANÍK Jan PODDANÝ Stanislav BRÁT Luboš ŠMELCER Ladislav SVOBODA Petr UHLÁŘ Robert TRNKA Jaroslav CHRASTINA Marek
Year of publication	2013
Type	Article in Periodical
Magazine / Source	Central European Astrophysical Bulletin
MU Faculty or unit	Faculty of Science
Citation
Web	http://adsabs.harvard.edu/abs/2013CEAB...37..201L
Field	Astronomy and astrophysics
Keywords	CCD;photometry;variable star;eclipsing binary;three-body system
Description	We present new results based on the photometric study of an eclipsing object AV CMi. Liakos and Niarchos (2010) obtained preliminary parameters of the system from photometric measurements and discovered a possible low-mass third body which they placed on an unusual inner orbit around one of the binary components. We confirmed depressions in the light curve and analysed observed changes in the whole light curve. The third body system explanation was tested, but we suggest a new, more realistic, alternative interpretation: a blend of two eclipsing binaries with periods of 2.277751 d and 1.03843 d. Astrometric measurements of the centroid position unfortunately yield no evidence about their angular separation.
Related projects:	Physics of Sun, stars, and stellar systems Fyzika hvězd a hvězdných soustav Multispektrální proměnnost horkých hvězd a její příčiny