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HD 3853


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Observational evidence for the pulsational stability of some AP stars
Sixteen peculiar A type stars (one of them questionable) and two Amstars have been observed photometrically during a continuous observingrun of 2 to 4 hours each, to check them for pulsational stability. AllAp stars proved to be of constant brightness to within about thestandard duration of 0.002 to 0.003 mag, except for an eventuallong-term variability due to rotation. Therefore, no observationalevidence from this side can be brought up against diffusion as apossible mechanism responsible for peculiar atmospheres. Both Am starsalso proved to be of constant brightness. Four new pulsating variablestars have been discovered from observations in the program.

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观测天体数据

星座:鳳凰座
右阿森松:00h40m30.30s
赤纬:-55°30'41.3"
视星:7.493
距离:1234.568 天文距离
右阿森松适当运动:55
赤纬适当运动:23.7
B-T magnitude:9.306
V-T magnitude:7.643

目录:
适当名称   (Edit)
HD 1989HD 3853
TYCHO-2 2000TYC 8469-248-1
USNO-A2.0USNO-A2 0300-00193714
HIPHIP 3178

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