Photometric Study of a Solar-Type X-Ray Binary Star 44 i Bootis

Astronomy and Astrophysics – Astronomy

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Scientific paper

A short orbital period solar-type binary star 44i Bootis (mv = 6m.1, Sp= G2V + G2V, P = 0d.2678) ) was observed in four passbands, BVRI, BVBVRIBBBBBBin 1994 at I.-S. Nha Observatory in Seoul. Altogether nine sets of complete light curves are made, out of which four curves show light variations of irregular fashion. The light variation of 44i Bootis is even in a single given night, which is more frequent than that known before. In addition, possible flares were also detected on two nights. A total of 36 times of the primary and secondary eclipses has been obtained, and the period varies in a slightly distorted parabola. With a collection of the most recent times of minima, the light elements for the linear form are made.

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