Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008acasn..49..348g&link_type=abstract
Acta Astronomica Sinica, vol. 49, no. 3, p.348-358
Astronomy and Astrophysics
Astronomy
Merhods: Data Analysis-Methods Statistical, Astronomical Data Bases: Miscellaneous-Catalogues-Surveys
Scientific paper
With the deployment and developments of various space-based and ground-based sky survey projects, astronomical data increase in the rate of the exponential growth form, and astronomy has paced into a full electromagnetic waveband era. Facing so huge amounts of data, how to save, organize, analysis and mine data is an important issue for astronomers. Under these situations, the international virtual observatory projects are being carried out. Up to now, they have developed many practical tools, such as VOPlot by India VO, OpenSkyQuery by NVO and VOSpec by ESA-VO, VOSED by Spain VO. As a member of International Virtual Observatory Alliance (IVOA), China-VO project has developed a cross-match tool, which is realized by web service. The tool can handle two catalogues from the same server, and also deal with two catalogues of which one is from the server and the other is from users. For the former one, users can execute cross-matching directly, and for the latter, users need to upload the local data into the server database by the automated software of database creation and then perform the cross-matching task. Meanwhile, the tool provides different kinds of cross-matching results and the selection of parameters. According to their own requirement, users can conveniently choose the cross-matching result and parameters. This tool is mainly used for multi-wavelength data integration, and the pre-research of cross-identification of two huge catalogues. In the near future, we will continuously enhance and update the tool, further develop statistical analysis tools and data mining tools on the basis of this work.
Gao Dan
Zhang Ya-Xing
Zhao Yong-Heng
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