Siegel der Universität

Universität zu Köln
Mathematisch-Naturwissenschaftliche Fakultät
Fachgruppe Physik

I. Physikalisches Institut

What's new?

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What is not quite so new anymore ? (Less recent changes to the CDMS)

The database is described in
H. S. P. Müller, F. Schlöder, J. Stutzki, and G. Winnewisser,
J. Mol. Struct. 742, 215–227 (2005)
and in
H. S. P. Müller, S. Thorwirth, D. A. Roth, and G. Winnewisser,
Astronomy and Astrophysics 370, L49–L52 (2001).
Please acknowledge use of the CDMS by citing these article. You are very welcome to state the web address also. We recommend to cite the original sources of the data too, which are given in the documentations, at least as far as this is feasible.

Recent Catalog Entries

  • Nov. 2018: E-HNCHCN; Z-HNCHCN; cyanooxirane; HCCCH2CN; CH3OCH2CHO.
  • Oct./Nov. 2018: Several outdated links were corrected.
  • Oct. 2018: c-C6H5CCH; H2NNC.
  • Sep. 2018: Corrected Ka designation of E levels of methanol; "≤" now reads "≥" and ">" now reads "<".
  • Aug. 2018: 3-methylanti- and -gauchebutyronitrile; CH3NC; NaS; KS; 15NH; CH3D; the CH3CNO entry is available with separated A1/A2 lines.
  • July 2018: i-C3H713CN; (CH3)213CHCN; 13CH3(CH3)CHCN; AlSH; NaSH; MgSH; CaSH; KSH.
  • June 2018: corrected files with HFS for isotopic CH3CN in v8 = 1.
  • May 2018: C2H5NC.
  • Apr. 2018: g-i-C3H7OH; a-i-C3H7OH; AlC2; trans-HC(S)SH; cis-HC(S)SH.
  • Mar. 2018: H2C4S; H2C5S; DCCCHO; HCCCDO; HCC13CHO; HC13CCHO; H13CCCHO; corrected tags of pentadiynal and heptatriynal; corrected files without HFS for isotopic CH3CN in v8 = 1.
  • Feb. 2018: DS2; pentadiynal; heptatriynal; propynethial; pentadiynethial; NS+; HC4S; HC5S; HC7S; CHD2+.
  • Jan. 2018: HD2+; HDNCN; HCCS; HC3S; H2C4O; s-propanal, v = 0; s-propanal, v24 = 1; s-propanal, v23 = 1; g-propanal, v = 0; C6S; C9S; created hyperfine predictions for benzonitrile; the CH3CN files with HFS have been corrected as well.

General Section

  • Nov. 2009: added note in the link which explains the aggregate spin number.

Catalog Search Form

  • Nov. 2018: A bug in the calculation of A values was fixed. This affected transitions with gup larger than 999.
  • Dec. 2015: new molecule group: cyclic species.

Partition Functions

  • Apr. 2010: started to add values at 2.725 and 5 K for some species. The log values are also displayed in the partition function table.

Molecules in Space

  • Oct. 2018: updated SiO documentation.
  • Aug. 2018: added documentation for CH3NC, updated those on H2S and CH3CN.
  • July 2018: added CNCN and potential identification of C5S with documentations.
  • May 2018: addened NCO with documentation; updated cyanamide, HOCN, and H2NCO+ documentations.
  • Mar. 2018: added HCS and HSC with documentations; updated H2CO documentation.
  • Feb. 2018: added thionitrosylium with documentation.
  • Jan. 2018: added benzonitrile with documentation; added HC5N documentation; updated HC7N documentation.

Fitting Spectra

  • June 2017: added NO files with FTIR data.
  • Apr. 2016: added ethanethiol files.
  • Jan. 2016: updated OH+.

Cologne Spectroscopy Data

  • Aug. 2018: Added 3-methylbutyronitrile files.
  • Feb. 2018: Added CHD2+ files.
  • Jan. 2018: Added extended HD2+ files (plus one line, basis of the new entry) as well as alternative fits. Added also propanal files.
  • Sep. 2017: Added 2-Cyano-anti-butane files.
  • Mar. 2017: The new H2D+ and HD2+ files are available.
  • Feb. 2017: added H2C17O; updated H2C18O and H2CO.