Light fluctuation and changes in the orbital period of the close binary 44 i Boo

Details Light fluctuation and changes in the orbital period of the close binary 44 i Boo Light fluctuation and changes in the orbital period of the close binary 44 i Boo

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984cha%26a...8..126l&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 8, Issue 2, p. 126-128.

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

The authors present the result of UBV photometry and narrow-band photoelectric photometry of 44 i Boo made in January 1980 and March 1982, and analysed the change in the orbital period of the binary over the past 65 years. They think that the fluctuations in the light curve are related to surface activities (cool and hot spots) on the stars and gas motion between the two stars, that the slowly-changing term in the orbital period is due to the light-time effect, while sudden changes in the period are related to mass ejection and eruptions on the stars.

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