J/A+AS/142/113ivo://CDS.VizieR/J/A+AS/142/113CDSChandra S.Kegel W.H.2000-02-24T05:57:15Z2000-02-24T06:56:06ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fratomic-physicsCollisional rate coefficients for rotational transitions in C3H2 and SiC2 due to collisions with H2 molecules are calculated. The C3H2 has two distinct species, ortho and para, whereas the SiC2 has only ortho specie due to spin statistics for the identical carbon nuclei. For ortho- and para-C3H2 we accounted for 47 and 48 energy levels, respectively. The calculations are done for the kinetic temperatures 30, 60, 90, and 120 K. For ortho-SiC2, we accounted for 40 energy levels and the calculations are done for the kinetic temperatures 25, 50, 75, 100, and 125 K. The results are reported here for the transitions in the upward direction. The values for the downward direction can easily be calculated with the help of the detailed equilibrium equation.2000A&AS..142..113Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/142/113CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/142/113https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/142/113http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/142/113https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/142/113https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/142/113http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/142/113GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+AS/142/113/tablesCollisional rate coefficients (tables 3 to 5)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intElElementcharTTemperatureKintTransTransition between two levelscharRateCollisional rate coefficient for the transition from the lower level (l) to the upper level (u) at the temperature Tcm**3.s**-1doublelLower levelintuUpper levelint