检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:万同山[1]
出 处:《天文学进展》1999年第3期207-216,共10页Progress In Astronomy
摘 要:现代紫外天文学的观测波段是3100 ~100?, 和X 射线相接。紫外观测要把望远镜放到150 km高度以上, 以避开臭氧层和大气吸收。90 年代发射的专用紫外空间探测器有Astro - 1 , Astro - 2 ,IUE, EU VE。在HST 和TRACE 上也安装有紫外空间探测器。这些紫外空间观测已覆盖了全部紫外光谱。1999 年6 月24 日发射升空的FUSE 卫星是NASA 的“起源计划” 项目, 将通过氘或“重氢”的探测来研究轻元素丰度,This paper reviews the past, present, and future of the space explorers for ultravoilet astronomy.Ultravoilet astronomy explorers launched and planned are described. The observing wavelengths of modern ultravoilet astronomy are in the range of 3100?~100? in connection with X-ray.Telescopes for ultraviolet observation are required to be put higher than 150 km well above the ozone and oxygen layers. The devoted ultraviolet space explorers launched in the 1990s are Astro-1, Astro-2, IUE, and EUVE. In addition, there are ultraviolet telescopes onboard the HST and TRACE satellites as well. Ultraviolet Observations in space have been made in the whole spectrum of ultraviolet astronomy. The FUSE satellite is part of NASA′s “Origins Program”. It is aimed at the exploration of one of the fundamental parameters, the abundances of light elements in the formation and evolution of the universe through the studies of deuterium, or “heavy hydrogen”, which was created solely in the Big Bang.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.7