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Orbits, masses and dynamical parallaxes of 12 visual binary systems
In this paper the preliminary orbital elements are presented for thefolowing double stars: WDS 00153+4412 = A 1256 AB, WDS 00470+2315 = HU413, WDS 00520+3154 = A 924, WDS 01036+6341 = MLR 87, WDS 01131+2942 = A1260, WDS 01158+0947 = A 2102, WDS 01200-1549 = HJ 2036, WDS 02423+4925= HU 539, WDS 02512+0141 = A 2338, WDS 02514-2139 = DON 43, WDS06253+0130 = FIN 343, WDS 20329+1142 = J 1. For all pairs in addition tothe orbital elements, the dynamical parallaxes, the masses, the absolutemagnitudes, the observations, the residuals (O-C) and the ephemeridesfor the next six years are given.
| Observations of Double Stars. XVIII.
Micrometer observations of 1350 pairs in 1995-1997 are listed.
| UVBY photometry of HIPPARCOS stars
Photoelectric data in the uvby system have been obtained for 367southern stars of the Hipparcos Input Catalogue. Most of the stars are Fand G main sequence and fall in the magnitude range V = 9 to 10.
| Some enigmatic binary stars. I
Historical measurements of components of binary star systems at timesexhibit evidence for incompatible interpretations. A short period andstrong eccentricity can equally be a long period with feebleeccentricity. Furthermore, measurements have been made indicating bothdirect and retrograde motions of the components. It has sometimes beenfound that the observations of contradicting evidence have been made ofa second binary system near the system first measured. Note is taken ofthe objects ADS 1959 - A 1818, ADS 2051 - HU 539, ADS 5515 - A 512, ADS5671 - BU 1022, ADS 6001 - A 1963, and ADS 7550 - A 2561, which maypossibly be combinations of two or even three binary clusters observedat different times. Tables are presented of data thus far measured ofeach system.
| Micrometer Observations of Double Stars and New Pairs - Part Ten
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980ApJS...44..111H&db_key=AST
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