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中国虚拟天文台研发策略与重点 总被引：5，自引：3，他引：2
由于不同的天文和技术背景，不同的虚拟天文台项目采取了不同的研究策略。本文首先介绍了国际上几个典型虚拟天文台项目的研发目标和工作重点；然后讨论了包括中国虚拟天文台在内的小型虚拟天文台项目在研发方面的优势和劣势。中国虚拟天文台项目根据自身所处的具体情况确定自己将走应用路线，争取在某些领域取得突破，研发重点包括五个方面：China-VO系统平台建设、国内外天文数据的统一访问、现有天文工具的虚拟天文台集成、天文设备的虚拟天文台集成、虚拟天文台基础上的公众教育。 相似文献
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目前,国际上诸多天文项目均遵循虚拟天文台（Virtual Observatory,VO）标准协议开发各天文数据检索发布系统,对外公开发布数据,并对数据资源进行VO注册,从而使用户通过虚拟天文台门户网站即可访问获取不同天文项目的数据集.硬X射线调制望远镜（HXMT）卫星项目也将虚拟天文台技术引入HXMT卫星数据检索发布系统的设计与实现过程中,既满足HXMT卫星数据发布需求,又将HXMT卫星数据融入虚拟天文台环境,实现国际天文数据的共享共用.系统提出了符合虚拟天文台规范的体系架构,并选取SCS锥形检索、VOTable数据格式等虚拟天文台标准协议加以实现,采用MVC模式、SSH框架以及各种J2EE技术进行软件研发,提供检索访问、浏览下载和可视化功能.实践和应用结果表明,系统在解决天文数据资源互操作、共享发布、检索访问及异构应用集成方面均具有可操作性,对我国空间天文卫星数据检索发布系统的研制具有参考意义. 相似文献
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中国虚拟天文台体系结构 总被引：2，自引：2，他引：0
虚拟天文台是天文技术和信息技术结合的产物，其体系结构体现着与最新信息技术的结合。本文首先介绍虚拟天文台的工作流程和原理，进而介绍了虚拟天文台体系结构研究的最新进展。以网格技术为基础，给出了中国虚拟天文台的层次式体系结构和服务式体系结构。 相似文献
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中国虚拟天文台资源信息管理 总被引：1，自引：0，他引：1
信息技术的高速发展正在逐步影响着传统的科学研究领域,虚拟天文台(VO)就是其中的一个典型代表.它与当前最前沿的网格技术结合起来,以实现全球天文资源的共享,充分挖掘海量天文数据的科学潜能.在中国虚拟天文台的设计与实现过程中,我们采取了开放网格服务架构(OGSA)的体系结构,以服务的方式来组织和管理虚拟天文台中的资源.中国虚拟天文台资源管理系统的设计实现,资源信息的注册及发现是一个关键的问题,直接影响着整个系统的运行.本文以OGSA为基础,结合Globus Toolkit 3(GT3)的具体实现,阐述中国虚拟天文台资源信息管理系统的设计与实现. 相似文献
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随着天文观测数据的爆炸式增长以及数据网格技术等新兴IT技术的日趋成熟,虚拟天文台应运而生。虚拟天文台成为基于数据网格技术的解决复杂海量天文数据的访问和管理的一种有效手段。我们对现有中国虚拟天文台体系结构底层进行设计与实现,并完成了其核心部分一天文数据结点。天文数据结点可发布和管理异构的数据资源,为用户提供统一的数据访问接口,进而为天文学家实现对各种天文数据的无缝透明访问和处理提供了方便。本文重点介绍了我们设计的天文数据结点的体系结构,以及结点各部分的功能,并讨论了其关键技术的实现。 相似文献
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Juan de Dios Santander-Vela Emilio García Stephane Leon Victor Espigares José Enrique Ruiz Lourdes Verdes-Montenegro Enrique Solano 《Experimental Astronomy》2012,34(3):623-652
The Virtual Observatory (VO) is becoming the de-facto standard for astronomical data publication. However, the number of radio astronomical archives is still low in general, and even lower is the number of radio astronomical data available through the VO. In order to facilitate the building of new radio astronomical archives, easing at the same time their interoperability with VO framework, we have developed a VO-compliant data model which provides interoperable data semantics for radio data. That model, which we call the Radio Astronomical DAta Model for Single-dish (RADAMS) has been built using standards of (and recommendations from) the International Virtual Observatory Alliance (IVOA). This article describes the RADAMS and its components, including archived entities and their relationships to VO metadata. We show that by using IVOA principles and concepts, the effort needed for both the development of the archives and their VO compatibility has been lowered, and the joint development of two radio astronomical archives have been possible. We plan to adapt RADAMS to be able to deal with interferometry data in the future. 相似文献
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Chenzhou Cui Dongwei FanYongheng Zhao Ajit KembhaviBoliang He Zihuang CaoJian Li Deoyani Nandrekar 《New Astronomy》2012,17(2):167-174
Although the roles of data centers and computing centers are becoming more and more important, and on-line research is becoming the mainstream for astronomy, individual research based on locally hosted data is still very common. With the increase of personal storage capacity, it is easy to find hundreds to thousands of FITS files in the personal computer of an astrophysicist. Because Flexible Image Transport System (FITS) is a professional data format initiated by astronomers and used mainly in the small community, data management toolkits for FITS files are very few. Astronomers need a powerful tool to help them manage their local astronomical data. Although Virtual Observatory (VO) is a network oriented astronomical research environment, its applications and related technologies provide useful solutions to enhance the management and utilization of astronomical data hosted in an astronomer’s personal computer. FITSManager is such a tool to provide astronomers an efficient management and utilization of their local data, bringing VO to astronomers in a seamless and transparent way. FITSManager provides fruitful functions for FITS file management, like thumbnail, preview, type dependent icons, header keyword indexing and search, collaborated working with other tools and on-line services, and so on. The development of the FITSManager is an effort to fill the gap between management and analysis of astronomical data. 相似文献
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S. Barthelmy 《Astronomische Nachrichten》2008,329(3):340-342
The GRB Coordinates Network (GCN) has filled an important niche in the conduct and progress of research on GRB for more than 14 years. The methods used to collect and distribute the positions, lightcurves, spectra, and images on GRB in real time (a few seconds) will be reviewed. For the research on GRBs to continue to move forward and for other fields of transient astronomy to move forward, enhancements are needed to the GCN. VOEvents is one of those changes, and that addition will be described here. The enhanced system will be called VO‐GCN. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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Crystal/liquid partition coefficients for Cr, V, Mn, and Fe have been determined experimentally between olivine, orthopyroxene, clinopyroxene and silicate melt possesing the composition of a primitive lunar green glass, at oxygen fugacities appropriate to the lunar interior. These species all behave essentially as compatible elements and possess crystal/liquid partition coefficients mostly between 0.3 and 0.9. Partition coefficients for Cr, V, and Mn are generally similar to those of Fe. This implies that crystal/liquid fractionation processes in the lunar interior which do not involve the participation of spinels would not have been effective in fractionating MnO, CrO, and VO from FeO. The well-known constancy of FeO/MnO ratios in nearly all lunar rocks is a reflection of this behaviour. It is shown that comparably strong correlations between CrO-;FeO and VO-;FeO exist for lunar highland breccias and soils from all sites and that these correlations extend to primitive lunar volcanic glasses associated with mare volcanism, strongly suggesting that the CrO/FeO and VO/FeO ratios so derived are of global importance. The observed ratios characterizing differentiated regions of the Moon can be combined with the corresponding ratios for residual refractory portions of the Moon, using measured partition coefficients for Fe, Mg, Cr, V, and Mn between olivine, orthopyroxene and liquid. Bulk Moon abundances for Cr and V have been calculated for a range of reasonable assumptions concerning the petrogenetic relationships between differentiated portions of the Moon and complementary refractory residua consisting of olivine and orthopyroxene mineralogies. Because of the small differences in crystal liquid partition coefficients between FeO, CrO, and VO, these estimates are insensitive to large variations in the models. The bulk Moon is accordingly estimated to contain 2190–2463 ppm Cr and 79–95 ppm V. These values are very similar to the Cr and V contents of the Earth's mantle, estimated as 3010 ppm Cr and 81 ppm V by Sun (1982). The geochemical implications of these similarities are discussed. 相似文献