Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001oap....14...74p&link_type=abstract
Odessa Astronomical Publications, 14, 74-77
Astronomy and Astrophysics
Astronomy
1
Stars: Binary: Contact, Stars: Individual: 44I Boo
Scientific paper
The long-term UBVR photoelectric monitoring of 44i Boo performed at the Skalnaté Pleso, Stará Lesná and Kryonerion observatories is presented. The orbital period changes are discussed including light-time effect caused by the visual companion. The radial velocity of the visual companion as well as observed period change conclusively determine the ascending node of the visual orbit to be in the first quadrant. The light curve of the system was found to be quite stable but asymmetric: maximum in the phase 0.25 has always been fainter than maximum in the phase 0.75. Light-curve analysis of the V observations since 1998 provided new inclination angle i =73.66±0.14o. Combination of the inclination angle with the published spectroscopic elements gave reliable masses of the components: m1=0.861±0.008 Msolar and m2 = 0.419±0.11 Msolar.
Pribulla Theodor
Rovithis Peter
Rovithis-Livaniou Helen
Tremko Josef
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