Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda: a strategy of Bulgarian Virtual Observatory HyperL inked E xtragalactic D atabases and A rchives V.Golev, Ph. Prugniel, G. Paturel and M. Tsvetkov Sofia University, Observatoire de Lyon

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory Where we are…  Virtual Observatory: General context  HyperLeda: The Local Universe  Bulgarian AVO initiatives

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory Virtual Observatory The modern observational facilities produse enormous volume of data (10 Tb/year/telescope and will be doubled each year). The higher data quality permits their re-utilisation. Multiplication of the scientific incom of large facilities. Creation of the necessary infrastructures. Inter-operability of databases and archives Construction of virtual instruments, and … … much more …

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory Virtual Observatory HyperLeda is well defined in the context of the Virtual Observatory The points HyperLeda meet as a VO service are: LEDA: sample selection on a physical constrains basis (100 parameteres, 3 millions objects) On-line processing of the information (development of the virtual instrument concept ) VOTable output (Dec 2002), input/output VOTable operability (April 2003) HyperLeda understends Astronomical Server URL (ASU)

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda 3 millions objects 1.5 Tb total archive + relevant software 4 main mirors through Europe: CRAL Observatoire de Lyon Astronomical Observatory, University of Sofia Sternberg Astronomical Observatory, Moskow University Brera Astronomical Observatory, Milan Duration of the project: 5 years, starting at Jan, 2001

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda HyperLeda as a virtual instrument: Statistically every extragalactic astronomer uses the HyperLeda services 15 times per year LEDA takes a major part of querator, an utility of Astrovirtel NED propose to re-distribute the mean data produced by LEDA

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda The Key Scientific Goals: The study of the physics, kinematics and evolution of galaxies in the Local Universe. The study of the stellar populations and dynamics of the nearby galaxies.

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda offers… Services for the international community Sample selections specifying a complex physical content Large-scale statistical studies Reference data (in particular spectrophotometry) Access and on-line processing of large surveys, in particular DENIS Using the virtual instruments (spectrophotometry) Complementarity with NED and SIMBAD

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda – how it works SoftwareProduction

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda – how it works S/W production Lyon 50% Moscow 25% Sofia 25%

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory Catalogues HyperLeda – how it works S/W production Catalogues Lyon 40% Sofia 40% GEPI 10% Moscow 10%

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory Catalogues HyperLeda – how it works S/W production Catalogues Quality control db construction Mirrors

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory ArchivesCatalogues HyperLeda – how it works S/W Production Catalogues Quality control db construction Mirros Archives FITS DENIS … PEGASE …

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory ArchivesCatalogues HyperLeda – how it works S/W Production Catalogues Quality control db construction Mirrors Archives LEDA homogenisation PEGASE … FITS DENIS …

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory HyperLeda – BG AVO The strategic interest of Bulgarian astronomy: - In the foresen future BG will not be able to build and/or maintain modern observational facilities - Within 5 years AVOs will be basic utilities for access the new and state-of-art observations - In Germany 8 out of 17 astronomical institutions take part in GAVO, the German initiative of VO. AVO will up the overal quality of Bulgarian astronomy (professional, educational) - Competences - Operational skills

BG Participants... Department of Astronomy, Sofia University Space Research Institute, BAS Institute of Astronomy, BAS

Nov 28-29, 2002 iAstro/IDHA Meeting, Strasbourg Observatory FIN University Observatory Sofia