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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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Membre dels grups següents:
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Dades d'Observació i Astrometria
| Constel·lació: | Hercules |
| Ascensió Recta: | 18h26m15.52s |
| Declinació: | +18°52'09.9" |
| Magnitud Aparent: | 8.433 |
| Distancia: | 990.099 parsecs |
| Moviment propi RA: | 2.7 |
| Moviment propi Dec: | -4.3 |
| B-T magnitude: | 8.342 |
| V-T magnitude: | 8.426 |
Catàlegs i designacions:
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