Variable extragalactic objects: identification and analysis of a complete sample to B = 21
Variable extragalactic objects: identification and analysis of a complete sample to B = 21
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河外可变天体：对 B = 21 的完整样本进行识别和分析
DOI：
10.1093/mnras/202.2.571
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发表时间：
1983
影响因子：
4.8
通讯作者：
M. Hawkins
中科院分区：
文献类型：
--
作者：
M. Hawkins
使用宇宙测量机在一系列英国1.2米施密特平板上探测到的微弱可变物体的样本似乎包括一群类星体和活动星系。数值-震级关系表明，对于19和21个磁极，每毫克磁暴的数值增加了5.8倍。样品的颜色-星等关系表明视星等与B-r颜色之间存在显著的相关性，初步认为这是随着光度的降低而变红的现象。
A sample of faint variable objects detected on a series of UK 1.2-m Schmidt plates using the COSMOS measuring machine appears to comprise a population of quasars and active galaxies. The number–magnitude relation is found to show a constant increase by a factor of 5.8 per mag for 19 <B< 21. The colour–magnitude relation for the sample shows a marked correlation between apparent magnitude andB–Rcolour, which is tentatively interpreted as a reddening with decrease in luminosity.