Erlangen 2022 – scientific programme

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MO: Fachverband Molekülphysik

MO 8: Poster 1

MO 8.15: Poster

Tuesday, March 15, 2022, 16:30–18:30, P

A status report on the Cologne Database for Molecular Spectroscopy, CDMS — •Holger Müller, Peter Schilke, and Stephan Schlemmer — I. Physikalisches Institut, Universität zu Köln, Germany

The CDMS^a has been founded more than 20 years ago as a link between laboratory spectroscopy and astrophysics. It provides in its catalog section line lists of mostly molecular species which were or may be detected in space by radio astronomical means.^b The line lists are generated by fitting critically evaluated experimental data, mostly from laboratory spectroscopy, to established Hamiltonian models. Separate entries are generated for different isotopic species and usually also for excited vibrational states. 1110 entries are in the CDMS catalog as of Dec. 2021. Species representing 468 entries have been detected in space, representing a substantial fraction of the more than 260 different molecules detected in space. The catalog is an important resource for secondary data source.

Other sections of the classical incarnation of the CDMS include a page on Molecules in Space and a help page for users of Pickett’s SPFIT/SPCAT programs. A mysql-based incarnation participates in the Virtual Atomic and Molecular Data Centre, VAMDC,^c which is linked to a plethora of other spectroscopic, collisional, and kinetic databases via the VAMDC portal.

^a Shortcut: cdms.de; web address: https://cdms.astro.uni-koeln.de/

^b H. S. P. Müller et al., Astron. Astrophys. 370 (2001) L49

^c http://www.vamdc.org/