...
【24h】

Mining the MACHO dataset

机译:挖掘MACHO数据集

获取原文
获取原文并翻译 | 示例
           

摘要

In order to detect massive compact halo objects (MACHOs) using microlensing, nightly images of the Large and Small Magellanic Clouds and the Galactic Bulge were taken between 1992 and 2000 with a 1.27 meter telescope. The resulting data contains 8·10~(10) photometric measurements of star light intensity magnitudes in the red and blue bands for 60 million stars. It has been suggested that the wealth of data may be used to discover new types of variable stars. We briefly outline some methods which may assist the astronomer in classifying variable stars which occur in the MACHO data. First, the almost periodic behavior of many long-period variable stars is used to obtain estimates of the magnitudes on a regular grid and also in regions of missing values. Then some simple features are suggested which characterize the star time in the search for new time series classes.
机译:为了使用微透镜检测大型致密光晕物体(MACHO),在1992年至2000年之间使用1.27米望远镜拍摄了大,小麦哲伦星云和银河凸起的夜间图像。所得数据包含6000万颗恒星在红色和蓝色波段中星光强度大小的8·10〜(10)个光度测量结果。已经提出,大量的数据可以用来发现新型的变星。我们简要概述了一些可以帮助天文学家对MACHO数据中出现的变星进行分类的方法。首先,许多长周期可变恒星的几乎周期性的行为被用来获得规则网格上以及缺失值区域内的星等的估计值。然后,提出了一些简单的功能,这些特征可以在搜索新的时间序列类别时表征星光时间。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号