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VRI photometry of wide double stars with A- type primaries.
We are presenting VRI photometry of 93 wide visual double stars havinglate B- or A- type primaries, taken from the Annex of Double andMultiple Stars of the HIPPARCOS Input Catalogue. Spectral types havebeen estimated for most of the primaries and for the majority of thesecondaries. 40% of them probably have common origin components, forwhich we calculated photometric parallaxes and some orbital valuesestimates.
| Radial-velocity measurements. V - Ground support of the HIPPARCOS satellite observation program
The paper presents data on 1070 radial velocity measurements of starsdistributed in 39 fields measuring 4 deg x 4 deg. The PPO series ofFehrenbach et al. (1987) and Duflot et al. (1990) is continued using theFehrenbach objective prism method.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Kucuk Kopek |
| Sað Açýklýk: | 07h15m01.62s |
| Yükselim: | +11°00'46.6" |
| Görünürdeki Parlaklýk: | 8.374 |
| Uzaklýk: | 1010.101 parsek |
| özdevim Sað Açýklýk: | -0.3 |
| özdevim Yükselim: | -0.5 |
| B-T magnitude: | 8.277 |
| V-T magnitude: | 8.366 |
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