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HD 183994


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Early-type stars detected on UK Schmidt objective-prism plates - III. UKST area 881.
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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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观测天体数据

星座:天鷹座
右阿森松:19h32m15.95s
赤纬:-01°26'07.5"
视星:8.585
距离:10000000 天文距离
右阿森松适当运动:1.3
赤纬适当运动:-2.6
B-T magnitude:8.644
V-T magnitude:8.59

目录:
适当名称
HD 1989HD 183994
TYCHO-2 2000TYC 5144-792-1
USNO-A2.0USNO-A2 0825-16155854
HIPHIP 96097
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