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HD 101784


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Vacuum ultraviolet imagery of the Virgo cluster region
The results are reported of an experiment using the UV imager aboard anattitude-controlled S520 type sounding rocket. The total UV fluxes ofgalaxies in the Virgo Cluster as well as the flux level of the diffuseUV background around the cluster were measured. The data on NGC 4486 andNGC 4472 confirm the variation in the degree of the 'turnup' below 200nm in the energy spectrum of the total light of elliptical galaxies. Attwo-color diagram of galaxies of visual/near-UV/vacuum UV indicates thatcolors of spiral galaxies are distributed within a strip andwell-correlated with the morphological type, while elliptical galaxiesare located differently from spiral galaxies.

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观测天体数据

星座:室女座
右阿森松:11h42m49.93s
赤纬:-03°32'42.4"
视星:7.534
距离:139.86 天文距离
右阿森松适当运动:-85
赤纬适当运动:-38.1
B-T magnitude:7.525
V-T magnitude:7.534

目录:
适当名称   (Edit)
HD 1989HD 101784
TYCHO-2 2000TYC 4934-1279-1
USNO-A2.0USNO-A2 0825-07535500
HIPHIP 57133

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