An atomic and molecular database for analysis of submillimetre line observations
Journal article, 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 http://www.strw.leidenuniv.nl/~moldata, 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.

atomic data

astronomical data bases

molecular data

interstellar matter

radiative transfer

Author

Fredrik Schöier

Chalmers, Department of Radio and Space Science, National Facility for Radio Astronomy

Floris F. S. van der Tak

E. F. van Dishoeck

John H Black

Chalmers, Department of Radio and Space Science, Radio Astronomy and Astrophysics

Astronomy and Astrophysics

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

Vol. 432 369-379

Subject Categories

Astronomy, Astrophysics and Cosmology

Atom and Molecular Physics and Optics

DOI

10.1051/0004-6361

More information

Created

10/7/2017