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HD 173320


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Three known and twenty-two new variable stars of early spectral type
Photoelectric photometry is reported of three known and 22 newvariables, all brighter than V = 7.5 mag. The three known ones are: theellipsoidal variable 42 (V467) Per, the Beta Cep-type star HR 6684 =V2052 Oph, and the eclipsing variable HR 8854 = V649 Cas. The newvariable stars are listed. They include two Beta Cep candidates, oneeclipsing and three ellipsoidal variables, a 'mid-B' variable, anAlpha(2) CVn variable, and two Lambda Eri stars. The twelve remainingnew variables could not be classified because of insufficient data. TheLambda Eri variables found in the present investigation, together withsome examples from the literature, indicate that rotational modulationoccurs not only in Be, but also in normal B stars.

A Search for Interstellar CA II and NA I Lines in Stars near High-Velocity H I Clouds
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观测天体数据

星座:盾牌座
右阿森松:18h45m04.35s
赤纬:-11°27'18.1"
视星:7.12
距离:406.504 天文距离
右阿森松适当运动:0.1
赤纬适当运动:-21.1
B-T magnitude:7.303
V-T magnitude:7.136

目录:
适当名称   (Edit)
HD 1989HD 173320
TYCHO-2 2000TYC 5700-809-1
USNO-A2.0USNO-A2 0750-14414747
HIPHIP 92000

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