Period Variations in IM Aurigae

Details Period Variations in IM Aurigae Period Variations in IM Aurigae

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002padeu..12..105b&link_type=abstract

2nd Workshop of Young Researchers in Astronomy & Astrophysics, Publications of the Astronomy Department of the Eötvös University

Astronomy and Astrophysics

Astrophysics

Scientific paper

In the present paper we study the behaviour of the O-C diagram of IM Aurige system. We confirm the former statement of Bartoloini et al. that the periodic term arise from light-time effect (LITE). We demonstrate that supposing an almost edge-on orbit for the third companion, its possible mass is in good agreement with the amount of the third light found from the reanalyzed BV light-curve of Gülmen et al. We show that another kind of variation (secular or sudden) is also present in the O-C curve. We give a parabolic ephemeris for this phenomenon. Finally we conclude, that neither mass-flow nor some orbital perturbations of the third body can cause this effect.

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