• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Survey and Other Telescope Technologies and Discoveries; Aug 27-28, 2002; Waikoloa, Hawaii, USA >Detection and study of variable sources with wide field imagers
【24h】

Detection and study of variable sources with wide field imagers

机译：宽视场成像仪对可变源的检测和研究

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In recent years massive CCD photometry has dramatically increased the number of known variable stars in the Milky Way and nearby galaxies of the Local Group. Some surveys are related to microlensing studies, distance determinations and the study of Cepheids and other pulsating stars, and are based on relatively small telescopes. The comparison of the performances of the various instruments shows the present limitations of the variable star research, and the requirements are to increase the sensitivity, spatial resolution and field of view. In order to get a better sensitivity, we adopted the W h-photometry, or unfiltered observations. We discuss the merits and defects of this technique in the context of recent studies with the ESO 0.9 m Dutch telescope and Wide Field Imager at the 2.2 m telescope. As regards the high precision photometry, we remark that a better control of the various error sources (including the stability of the instrumentation) is needed in order to detect very small amplitude variations with good confidence.
机译：近年来，大规模CCD光度法极大地增加了银河系和本地群附近星系中已知变星的数量。一些调查与微透镜研究，距离测定以及造父变星和其他脉动星的研究有关，并且是基于相对较小的望远镜进行的。各种仪器性能的比较表明了变星研究的当前局限性，并且要求增加灵敏度，空间分辨率和视野。为了获得更好的灵敏度，我们采用了W h光度法或未过滤的观测值。在最近的研究中，我们使用ESO 0.9 m荷兰望远镜和2.2 m望远镜的Wide Field Imager讨论了该技术的优缺点。关于高精度测光法，我们注意到需要更好地控制各种误差源（包括仪器的稳定性），以便以良好的置信度检测非常小的振幅变化。

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