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Optical observations of ultraviolet objects. II - Classification and photometry /l = 0 to 145 deg/
UBV photometry and MK spectral classification are presented for a sampleof stars originally selected as UV objects from satellite photometrywith the S2/68 experiment. Although most stars of the sample arespectroscopically normal, a number of hot, subluminous stars were alsofound. Radial velocities are given for some of the stars observed. It isproposed that the majority of the apparently normal early B stars athigh galactic latitudes which are not runaway stars are subluminousdisc-population analogues of horizontal branch B stars of Population II.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Calgi |
| Sað Açýklýk: | 19h12m42.82s |
| Yükselim: | +39°29'50.3" |
| Görünürdeki Parlaklýk: | 8.303 |
| Uzaklýk: | 373.134 parsek |
| özdevim Sað Açýklýk: | 0.1 |
| özdevim Yükselim: | -1.4 |
| B-T magnitude: | 8.216 |
| V-T magnitude: | 8.296 |
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