Kinematics of Hipparcos Visual Binaries. II. Stars with Ground-Based Orbital Solutions
This paper continues kinematical investigations of the Hipparcos visualbinaries with known orbits. A sample, consisting of 804 binary systemswith orbital elements determined from ground-based observations, isselected. The mean relative error of their parallaxes is about 12% andthe mean relative error of proper motions is about 4%. However, even 41%of the sample stars lack radial velocity measurements. The computedGalactic velocity components and other kinematical parameters are usedto divide the stars with known radial velocities into kinematical agegroups. The majority (92%) of binaries from the sample are thin diskstars, 7.6% have thick disk kinematics and only two binaries have halokinematics. Among them, the long-period variable Mira Ceti has a verydiscordant {Hipparcos} and ground-based parallax values. From the wholesample, 60 stars are ascribed to the thick disk and halo population.There is an urgent need to increase the number of the identified halobinaries with known orbits and substantially improve the situation withradial velocity data for stars with known orbits.
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The first orbital elements for eight binaries
The orbital elements, masses and orbital parallaxes are communicated forthe first time for the following eight double stars: WDS 04089+4614 =ADS 3007 = A 998 = HD 25987, WDS 04275+1113 = ADS 3228 = BU 1186 = HD28217, WDS 04400+2301 = ADS 3370 = HU 442 = HD 29538, WDS 18018+0118 =ADS 10990 AB = BU 1125 AB = HD 164577, WDS 18033+3921 = ADS 11023 = STF2275 = HD 88432, WDS 18054+6216 = ADS 11073 = HU 1290 = HD 166206, WDS19389+3514 = ADS 12746 = HU 953 = HD 185696, WDS 20176+2622 = ADS 13649= BU 984 = HD 193095.
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Micrometer and CCD Measurements of Double Stars (Series 51)
36 micrometric measurements of 20 double or multiple systems carried outwith the Zeiss 65/1055 cm Refractor of Belgrade Observatory arecommunicated. Also 35 CCD measurements of 15 double or multiple systemsare included.
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New orbits.
Not Available
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Mesures d'etoiles doubles faites a Nice (5eme serie. Double star measurements made at Nice
We present the last observations from two lists: General program and MLRpairs, made with the 50~cm refractor of Nice Observatory.
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Measurements of binary stars performed at Nice (Second series)
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984A&AS...57..467M&db_key=AST
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Micrometric Measures of Double Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974ApJS...28..413V&db_key=AST
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Mesures d'étoiles doubles faites au 0,38 m de l'Observatoire de Paris.
Not Available
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Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice
Not Available
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Double star observations at Lick Observatory
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1954AJ.....59..388M&db_key=AST
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Double star observations in 1951.
Not Available
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