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HD 212129


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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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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Turna Kusu
Sað Açýklýk:22h22m44.88s
Yükselim:-38°45'15.0"
Görünürdeki Parlaklýk:8.224
Uzaklýk:130.039 parsek
özdevim Sað Açýklýk:-14
özdevim Yükselim:0.8
B-T magnitude:8.613
V-T magnitude:8.257

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 212129
TYCHO-2 2000TYC 7996-456-1
USNO-A2.0USNO-A2 0450-40176170
HIPHIP 110479

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