An atomic and molecular database for analysis of submillimetre line observations
Artikel i vetenskaplig tidskrift, 2005

Atomic and molecular data for the transitions of a number of astrophysically interesting species are summarized, including energy levels, statistical weights, Einstein A-coefficients and collisional rate coefficients. Available collisional data from quantum chemical calculations and experiments are extrapolated to higher energies (up to $E/k \sim 1000$ K). These data, which are made publically available through the WWW at, are essential input for non-LTE line radiative transfer programs. An online version of a computer program for performing statistical equilibrium calculations is also made available as part of the database. Comparisons of calculated emission lines using different sets of collisional rate coefficients are presented. This database should form an important tool in analyzing observations from current and future (sub)millimetre and infrared telescopes.

astronomical data bases

molecular data

radiative transfer

interstellar matter

atomic data


Fredrik Schöier

Universiteit Leiden

Alba Nova Universitetscentrum

Floris F. S. van der Tak

Max-Planck Institut für Radioastronomie

E. F. van Dishoeck

Universiteit Leiden

John H Black

Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 432 369-379


Astronomi, astrofysik och kosmologi

Atom- och molekylfysik och optik



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