Construction and Application of the Data Center in Xinjiang Astronomical Observatory

Xinjiang Astronomical Observatory (XAO) has accumulated massive valuable observational data after years of observation. Problems including how to efficiently manage the rapid growth of the massive observational data, how to achieve the integration of the whole band observations as well as archive and publish massive data produced by larger diameter telescopes in future are extremely urgent and hence need to be solved in a timely manner. XAO data center is a scientific data service infrastructure designed to meet the demands of scientific research in astronomy. ICT is in charge of the implementation and maintenance of this project. This data center is constructed based on the relevant standards of virtual observatory. Its basic services include:providing services of data storage, management and release for astronomical observation programs, offering services of long-term preservation and access for valuable astronomical data and processed secondary data, offering scientific data archiving, release and technical support for users. Its main data resources include pulsar observation data, observed data of active galactic nuclei and molecular spectrum, all of which are obtained by the 25m Radio Telescope in XAO. Data services provided by this center include PPMXL catalog data online massive cone search, cross validation, UCD information query services and so on. This paper will mainly focus on introducing the construction of the XAO data center, its services, and how to use these services to retrieve data or use standard VO tool to realize data operation.