1. GAUDI Ground-based Asteroseismology Uniform Database Interface http://ines.laeff.esa.es/corot/ E. Solano Bases de données en spectroscopie stellaire. Paris. Sep. 2003

2. E. Solano. Paris. Sep 2003  Target selection in the COROT mission is a critical issue (staying six months observing a binary star would have been very depressing). The origins  Theoretical pulsation models requires a precise knowledge of the stellar physical parameters (Teff, log g, metallicity)  An ambitious ground-based observing programme (more than 1500 objects, mainly spectroscopy and photometry) was initiated.  Having an user-friendly access system to these data was considered as of fundamental importance since the beginning of the project.  March 2001: LAEFF - COROT agreement to develop GAUDI.

3. E. SolanoIAA. Feb 2003 Archives: are they necessary?  Efficiency: The collective impact of the archive will far exceed what could be produced by the programs of single observer or team of observers. Astronomers might find that the observations they wanted had already been made, and that it was simply a matter of retrieving the relevant information. One set of observations can serve many different scientific purposes, including some not considered when the observations were made. Exploit the time domain.  Periodic phenomena: Variable stars  Transient phenomena: SN, NEO, GRB,..

4. E. Solano. Paris. Sep 2003  Legacy: G uarantee that the valuable datasets are usable by future generations for research and education. The need of Archives (II) “A well-designed and properly implemented archive is a major contribution toward the full exploitation from the expensive-to-obtain observational data”.  Positive “Globalization”: Astronomers from countries with limited resources have the opportunity of accessing high-quality data.

5. Processing Pipeline Reduced data + Raw Data Calib. Files Science Archive Database (Meta-data) Storage system (FITS files) E. Solano. Paris. Sep 2003

6. Data Storage E. Solano. Paris. Sep 2003 Data will resided on a mass storage system (magnetic disks) in FITS format. Data integrity requires a well-defined backup policy and data safekeeping. Data stored in the archive are indexed in an inventory management subsystem (RDBMS). To ensure integrity, metadata will be extracted from FITS keywords and ingested the database in an automatic way. Data Management

7. Processing Pipeline Reduced data + Raw Data Calib. Files Science Archive Database (Meta-data) Storage system (FITS files) User Interface (HTML) End-User

8. E. Solano. Paris. Sep 2003 Data Retrieval and User Interface System The friendliness of the user interface is extremely important for the archive to be effectively used by the community at large.  The UI will be HTML-based to allow simple use through the Web.  The system should be easy for new users to learn.

9. E. Solano. Paris. Sep 2003 The User Interface Data query & retrieval System description, On-line help & Helpdesk User Interface c Visualisation & analysis tools Interoperability

10. E. Solano. Paris. Sep 2003 GAUDI. The Help Systems Different levels of help to users On-line Access to project documentation: A detailed description of the project, the archive and access system shall be given on-line and stored in a format allowing an easy browsing (e.g. PDF). On-line help: Help on a specific keyword can be obtained by simply clicking on it. HelpDesk: to channel questions and to provide continuous support to users of the Archive.

11. GAUDI. The Help Systems

12. On-line Help E. Solano. Paris. Sep 2003

13. The User Interface Data query & retrieval System description, On-line help & Helpdesk User Interface c Visualisation & analysis tools Interoperability Data query & retrieval

14. The GAUDI welcome page c Access restricted to COROT project Username & password provided on demand.

15. The COROT input query form

16. The result of the query Name resolver. Multidownload with different compression formats

17. Link to SIMBAD

18. The result of the query

19. Display of the FITS header

20. The result of the query

21. Plotting facilities Plot can be saved as GIF file Zoom facility Link to full header

22. The COROT input query form

23. The result of the query

24. The COROT input query form

25. The result of the query

26. E. Solano. Paris. Sep 2003 The User Interface Data query & retrieval System description, On-line help & Helpdesk User Interface c Visualisation & analysis tools Interoperability

27. Analysis tools E. Solano. Paris. Sep 2003  Multi-range spectroscopy: building of SEDs  Comparison to models or theoretical data  Data mining “A modern multi-wavelength data server must not be a simply data repository. It must include tools to help the users in the data analysis”

28. ISO IUE Radio Wavelength: mm Flux: mJy UBVRIJHK Wavelength: Å +  Magnitudes!!! E. SolanoIAA. Feb 2003 Different units both in wavelength and flux. Flux calibration of the photometric systems.... and the problems come up

29. E. SolanoIAA. Feb 2003 Synthetic model s Comparison to models or theoretical data E. Solano. Paris. Sep 2003

30. IR excess from B. Merín The problems(III)

31. E. Solano. Paris. Sep 2003 The User Interface Data query & retrieval System description, On-line help & Helpdesk User Interface c Visualisation & analysis tools Interoperability

32. Science Archive Science Archive Science Archive The GAUDI Interoperability Science Archive GAUDI E. Solano. Paris. Sep 2003

33. c  Internal Among the Mission & User Archives and the preparatory archives (COROTSKY and GAUDI). Interoperability Levels E. Solano. Paris. Sep 2003  External First level:  General-purpose catalogues: ADS, SIMBAD Second level:  Other astronomical databases: 2MASS, DENIS, SLOAN, DSS,... Third level:  VO federation. Uniform access to a federation of multi-wavelength distributed archives. Data exchange according to agreed standards.