从1000 AU到1000 pc：太阳附近的高自行恒星，猎户座sigma星团中的射电源和围绕Alnilam的新X射线星
From 1000 AU to 1000 pc: high proper-motion stars in the solar neighbourhood, radio sources in the sigma Orionis cluster, and new X-ray stars surrounding Alnilam
摘要：
虚拟天文台是有用的。我总结了一些我广泛使用阿拉丁天空地图集的作品。主题涵盖从宽（rho > 1000 AU）双星和多系统中极低质量恒星和褐矮星的搜索和常见自行确认，到年轻疏散星团和OB星协中恒星和亚星群的识别和表征。日心距离高达1000秒差距。我提出了三个实际的例子，一个人可以做什么阿拉丁在一个上午：一个富有成效的自行搜索的对象与可用ugrizJHKs测光，对年轻的猎户座σ星团的21厘米射电源的分析，和一个新的研究X射线年轻恒星周围的Alnilam在猎户座带。
英文摘要：
The Virtual Observatory is useful. I summarise some of my works where I extensively use the Aladin sky atlas. Topics cover from the search and common proper motion confirmation of very low-mass stars and brown dwarfs in wide (rho > 1000 AU) binaries and multiple systems, to the identification and characterisation of stellar and substellar populations in young open clusters and OB associations at heliocentric distances of up to 1000 pc. I present three practical examples of what one can do with Aladin in one morning: a fruitful proper-motion search of objects with available ugrizJHKs photometry, an analysis of the 21 cm radio sources towards the young sigma Orionis cluster, and a novel study of X-ray young stars surrounding Alnilam in the Orion Belt.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
