Poster Abstract

P11.1 Yuji Shirasaki (National Astronoimcal Observatory of Japan)

Theme: Other

JVO portal : VO data search using the cache of VO crawler and Gaia data viewer

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.