Ro-vibrational Collisional Excitation Database: BASECOL - http://www.obspm.fr/basecol

Details Ro-vibrational Collisional Excitation Database: BASECOL - http://www.obspm.fr/basecol Ro-vibrational Collisional Excitation Database: BASECOL - http://www.obspm.fr/basecol

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..525d&link_type=abstract

SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret

Computer Science

Databases

Scientific paper

Numerical and bibliographical Databases in Atomic and Molecular Physics are essential for both the modelling of various astrophysical media and the interpretation of astrophysical spectra provided by ground or space-based telescopes. We will present the current status of a numerical and bibliographical database concerning collisional ro-vibrational excitation rate coefficients of molecules (basecol.obs-besancon.fr). This is part of a EU effort towards the scientific preparation of the HIFI instrument of the Herschel Space Observatory (HSO) and ALMA. An identification of needs for data on collisional ro-vibrational excitation of molecules has been specified in a recent report. These first steps have triggered different groups to carry out calculations on collisional ro-vibrational excitation of molecules and to build a related bibliographic and numerical database. This database, called BASECOL is devoted to collisional ro-vibrational excitation of molecules by colliders such as atom, ion, molecule or electron. We have constituted a international working group of molecular physicists involved in the calculations of ro-vibrational cross-sections, in order to ensure the continuity and the quality of the database. We are primarily focusing on collisional systems of interest for various astrophysical media. The database is composed of several parts : a bibliographic database (papers are read and associated to very precise keywords), calculated collisional rates or cross-sections, information on the molecular data used in the cross section calculations, various information on ro-vibrational excitation of molecules. For the systems of astrophysical interest, we will provide full information on the chain of errors of the data and give some recommendations. We will improve and enlarge the content of the bibliographic database and provide more collisional rates. Access is currently available via a classical WEB interface with an interactive query page for the bibliographic database. An interactive access to the collisional rates and cross-sections is underway. We are also addressing the issue of compatibility of the output of the database within the framework of the Virtual Observatories, in relation both with WEB tools for spectral analysis and with other databases. The final version should be released in June 2004.

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