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HD 126226


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A photometric study of southern AP stars having right ascensions on the order of 12 HR
The color variability periods of some southern Ap stars were determinedfrom uvby measurements. Observations were made of 25 Sex, HR 4327, betaHya, HD 112381, HR 4965, HR 5158, HR 5269, and HD 125630. Data wereinsufficient for determinations of the periods of the stars HR 4109(which may not vary), l Cen, and the v and y variations of HD 125630.The occurrences of short duration dips in the color variation curves ofseveral of the objects are discussed.

Search for Beta Cephei stars south of declination -20 deg. II - Photometric and spectrographic observations of early B giants and subgiants - Winter objects
Results of the second part of a program begun in 1975 (Jerzykiewicz andSterken, 1977) are presented. Out of 39 Beta Cephei candidates observedphotometrically, seven turned out to vary with the b ranges exceeding0.020 m, while 21 have been found constant to within 0.010 m or better.For the 56 comparison stars these numbers are 6 and 25, respectively.From spectrographic observations one of the candidates, HD 129557 = HR5488 (B2 III), iis found to be a Beta Cephei variable with a period of0.135 d and the 2 K amplitude of 18.4 km/s. A comparison of the resultsof this program with other recent photometric searches for Beta Cepheivariables shows good agreement in most cases. There are severaldiscrepant stars, however. These are discussed in some detail. Aconclusion emerges that in the low temperature extension of the BetaCephei region, if such an extension exists at all, on-and-off typepulsations occur.

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观测天体数据

星座:圓規座
右阿森松:14h27m11.28s
赤纬:-66°34'04.9"
视星:6.562
距离:606.061 天文距离
右阿森松适当运动:-6.4
赤纬适当运动:-6.1
B-T magnitude:6.685
V-T magnitude:6.573

目录:
适当名称   (Edit)
HD 1989HD 126226
TYCHO-2 2000TYC 9018-421-1
USNO-A2.0USNO-A2 0225-20198077
HIPHIP 70661

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