new [CDMS classic documentation]

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====== What's new? ======

[[archive|And what is not quite so new anymore?]]

The database is described in
<alert type="info">
H. S. P. Müller, F. Schlöder, J. Stutzki, and G. Winnewisser, J. Mol. Struct. 742, 215–227 (2005)
</alert>
and in
<alert type="Info">
H. S. P. Müller, S. Thorwirth, D. A. Roth, and G. Winnewisser, Astronomy and Astrophysics 370, L49–L52 (2001).
</alert>
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 =====

[[archive#less_recent_catalog_entries|Earlier Catalog Entries]]

  * Dec. 2022: DCS.
  * Nov. 2022: HC<sub>4</sub>S; DSC; HS<sup>13</sup>C.
  * Oct. 2022: //t//-C<sub>2</sub>H<sub>3</sub>NCO; //cis//-C<sub>2</sub>H<sub>3</sub>NCO; //g'Gg'//-alaninol; //gG'g//-alaninol; 2-hydroxypropenal.
  * Sep. 2022: <sup>13</sup>CH<sub>3</sub>OCH<sub>3</sub>; 2-Iminopropanenitrile; //c//-C<sub>2</sub>H<sub>3</sub>DO.
  * Aug. 2022: //E//-1-propanimine; //Z//-1-propanimine; //Z//-propynimine; //E//-propynimine; HC(O)OCH<sub>2</sub>D; HC(O)OCHD<sub>2</sub>; DC(O)OCH<sub>3</sub>; <sup>13</sup>CH<sub>3</sub>C(O)CH<sub>3</sub>; corrected intensities of SiS, //v// ≤ 19 and Si<sup>33</sup>S, //v// ≤ 9. 
  * Jul. 2022: Ethenylidenecyclopentadiene; ethynylcyclopropynylidyne; allenyldiacetylene; heptatetraen-6-yne; allenylcyanoacetylene.
  * Jun. 2022: H<sub>2</sub><sup>13</sup>CC<sub>2</sub>S; HDC<sub>3</sub>S; H<sub>2</sub>C<sub>3</sub><sup>34</sup>S.
  * May 2022: H<sub>2</sub>C<sup>13</sup>CS; H<sub>2</sub><sup>13</sup>CCS; H<sub>2</sub>CC<sup>34</sup>S; HDC<sub>2</sub>S; H<sub>2</sub>C<sub>3</sub>S; H<sub>2</sub>C<sub>2</sub><sup>13</sup>CS; H<sub>2</sub>C<sup>13</sup>CCS.
  * Apr. 2022: //syn//-C<sub>2</sub>H<sub>3</sub>C(O)NH<sub>2</sub>, //v// = 0; //syn//-C<sub>2</sub>H<sub>3</sub>C(O)NH<sub>2</sub>, //v//<sub>24</sub> = 1.
  * Mar. 2022: //c//-C<sub>2</sub>H<sub>4</sub>O; //c//-C<sup>13</sup>CH<sub>4</sub>O; //c//-C<sub>2</sub>H<sub>4</sub><sup>18</sup>O; CD<sub>3</sub>OH, //v//<sub>t</sub> = 0; CD<sub>3</sub>OH, //v//<sub>t</sub> = 1; CHD<sub>2</sub>OH, //v//<sub>t</sub> = 0; HCCNCH<sup>+</sup>; HC<sub>7</sub>NH<sup>+</sup>.
  * Feb. 2022: MgS, //v// = 0, 1; <sup>25</sup>MgS, //v// = 0; <sup>26</sup>MgS, //v// = 0; Mg<sup>34</sup>S, //v// = 0; MgO, //v// = 0 − 2; <sup>25</sup>MgO, //v// = 0, 1; <sup>26</sup>MgO, //v// = 0, 1.
  * Jan. 2022: H<sub>2</sub>CCNH; <sup>47</sup>TiO, //v// = 0; <sup>47</sup>TiO, //v// = 1; <sup>47</sup>TiO, //v// = 2; <sup>47</sup>TiO, //v// = 3; glycinamide; <sup>49</sup>TiO, //v// = 0; <sup>49</sup>TiO, //v// = 1; <sup>49</sup>TiO, //v// = 2; <sup>49</sup>TiO, //v// = 3.

===== General Section and General Remarks =====

  * Mar. 2019: The program of the VAMDC-CDMS was updated. The Classic or ascii-CDMS was moved to this server. Links have been corrected and should work, but a detailed check is pending. The coding of special characters has been adjusted.
  * Nov. 2009: added note in the link which explains the aggregate spin number.

===== Catalog Search Form =====

[[archive#catalog_search_form|Archive "Catalog Search Form"]]

  * Nov. 2021: A new group was defined: Other hydrocarbons, that are hydrocarbons different from the carbon chain species C<sub>n</sub>H and C<sub>n</sub>H<sub>2</sub>, but including isotopologs.

===== 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 =====

[[archive#molecules_in_space|Archive "Molecules in Space"]]

  * Nov. 2022: added HC<sub>4</sub>S and ethynylbutatrienylidene with documentation, updated the oxirane entry. 
  * Oct. 2022: added 2-cyanoindene with documentation. 
  * Aug. 2022: added ethenylidenecyclopentadiene with documentation; updated ethenol documentation. 
  * Jul. 2022: added //c//-C<sub>3</sub>C<sub>2</sub>H, CH<sub>2</sub>CCHC<sub>4</sub>H, and cyanopropene species with documentations; updated H<sub>2</sub>CCCHC<sub>3</sub>N documentation.
  * Jun. 2022: added //n//- and //i//-propanol with documentations. 
  * May 2022: added PO<sup>+</sup>; updated NO<sup>+</sup> documentation.
  * Apr. 2022: added ethenediol and tentatively detected 3-hydroxypropenal; added extragalactic PN; updated extragalactic ArH<sup>+</sup> documentation.
  * Mar. 2022: added HCCS<sup>+</sup>, C<sub>5</sub>H<sup>+</sup>, HCCNCH<sup>+</sup> and HC<sub>7</sub>NH<sup>+</sup> with documentations; added tentative detection of cyanoheptatriyne; included tentatively detected ethylamine in the table; updated C<sub>3</sub>H<sup>+</sup> and CH<sub>3</sub>C<sub>4</sub>H documentations.
  * Jan. 2022: added extragalactic methyl formate and dimethyl ether with documentations.

===== Fitting Spectra =====

[[archive#fitting_spectra|Archive "Fitting Spectra"]]

  * Dec. 2020: added aminoacetonitrile example.
  * Nov. 2020: added hydroxymethyl data.

===== Cologne Spectroscopy Data =====

[[archive#cologne_spectroscopy_data|Archive "Cologne Spectroscopy Data"]]

  * Mar. 2022: added CD<sub>3</sub>OH, oxirane, and //gauche//-propanal files.
  * Feb. 2021: added cyclopropenone files.