Eight new and three recalculated orbits for binaries

Details Eight new and three recalculated orbits for binaries Eight new and three recalculated orbits for binaries

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010an....331..304c&link_type=abstract

Astronomische Nachrichten, Vol.331, Issue 3, p.304

Astronomy and Astrophysics

Astronomy

1

Binaries: Visual, Stars: Individual (I 1477, I 43 Ab, A 914, I 47, Bu 506, A 1526, Mca 16 Aa-Ab, Fin 113 Ab, Fin 116, Fin 315 Aa-Ab, Fin 372)

Scientific paper

In this paper new orbital elements are given for eleven binaries. For eight of them, WDS 00003-4417 = I 1477, WDS 00106-7313 = I 43 AB, WDS 00366+5609 = A 914, WDS 00519-4343 = I 47, WDS 01315+1521 = BU 506, WDS 01577+4434 = A 1526, WDS 08144-4550 = FIN 113 AB and WDS 08291-4756 = FIN 315 Aa-Ab, the orbital elements are calculated for the first time. For three of them, WDS 04422+2257 = MCA 16 Aa-Ab, WDS 08275-5501 = FIN 116 and WDS 14567-6247 = FIN 372, the orbital elements are recalculated. One of the eleven binaries, MCA 16 Aa-Ab, was discovered by McAlister in 1980 by speckle interferometry and four pairs were discovered by Finsen between 1929 and 1960. For these five pairs, all measured separations are less than 0".4 and most of the observations were done by using the interferometric techniques. The orbital periods calculated here are between 39 and 270 years. The remaining six pairs were discovered between 1878 and 1926 and most of the observations are visual. They have longer orbital periods, between 384 and 1637 years. In addition to the orbital elements the masses, dynamical parallaxes, absolute magnitudes and ephemerides for the next five years are also given in this paper.

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