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HD 232174


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Observational studies of Cepheids. II - BVRI photometry of 112 Cepheids
Over 4000 differentially determined photoelectric BVRI observations andthe resulting light curves are presented for 112 Cepheids accessiblefrom Northern Hemisphere observatories. The internal precision of thesedata is better than + or - 0.01 mag, and the accuracy of transformationto the Johnson BVRI system is nearly as good.

An investigation of radius anomalies among short-period Cepheids
Simultaneous photometric and spectroscopic observations have beenobtained of two short-period Cepheids, SU Cas and TU Cas. The Wesselinkmethod of Barnes et al. was used to obtain radii. The radii are found toagree, within the expected error, with evolutionary values. Thisstrengthens the argument that the beat Cepheids are normal Cepheids inmixed-mode behavior rather than a separate class of objects and thatevolutionary masses and radii are correct.

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观测天体数据

星座:仙后座
右阿森松:00h23m16.98s
赤纬:+51°11'40.4"
视星:8.567
距离:277.008 天文距离
右阿森松适当运动:11.8
赤纬适当运动:-1.5
B-T magnitude:9.781
V-T magnitude:8.668

目录:
适当名称   (Edit)
HD 1989HD 232174
TYCHO-2 2000TYC 3260-865-1
USNO-A2.0USNO-A2 1350-00416215
HIPHIP 1839

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