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HD 166179


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CCD Stromgren Photometry of Young Reddened Clusters
The capabilities of CCD uvby photometry for the study of reddened youngclusters are investigated. Observations of four fields in the directionof the clusters Basel 1, Berkeley 86, NGC 6704, and NGC 6756, with atotal of 1665 stars measured in at least the y and b bands, produce newestimates for the clusters parameters. The results are compared to thosefrom previously published studies in different photometric systemsshowing good agreement in the values of color excess and distancemodulus, with the exception of NGC 6756, for which an essentially largerdistance is found. Furthermore, the ages estimated for this cluster,Basel 1, and NGC 6704 are found to be higher than previously assumed, inparticular for the last one. The presence of red giants as clustermembers is suggested in Basel 1, NGC 6704, and NGC 6756.

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观测天体数据

星座:小熊座
右阿森松:17h20m36.54s
赤纬:+87°22'31.4"
视星:8.306
距离:163.666 天文距离
右阿森松适当运动:16.7
赤纬适当运动:-0.4
B-T magnitude:8.68
V-T magnitude:8.337

目录:
适当名称   (Edit)
HD 1989HD 166179
TYCHO-2 2000TYC 4655-841-1
USNO-A2.0USNO-A2 1725-00555378
HIPHIP 84858

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