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Paper: JVO Portal: VO Data Search Using the Cache of VO Crawler and Gaia Data Viewer
Volume: 527, Astronomical Data Analysis Software and Systems XXIX
Page: 689
Authors: Shirasaki, Y.; Zapart, C.; Ohishi, M.; Mizumoto, Y.
Abstract: We present two new features of JVO portal. (1) VO crawler is a crawling system which automatically sends queries to the selected VO services and caches the retrieved data. In order to retrieve all the data (or metadata of image and spectrum) provided by the VO services, it performs queries by changing the region of interest step by step. We registered those data in a distributed database system and made them searchable with a unified interface through the JVO portal. (2) Gaia data viewer is a data visualization service for Gaia source catalog. Gaia source catalog contains more than one billions of records. Due to its large volume, it is hard or time consuming to make a plot to see the distribution of the source parameters satisfying given criteria. By utilizing the distributed database system we provide a quick (quicker than reading from a single HDD) visualization service for Gaia source catalog.
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