Table · dataset · 2026
Rate coefficients of OCS by He
Listed in IVOA Registry (Virtual Observatory)
In typical molecular clouds, analyzing the physic-chemical conditions with non-LTE models requires the knowledge of the collisional rate coefficients of the detected molecule with the most common colliders in the interstellar medium (ISM), e.g., H_2_, He, and H. The OCS molecule has been widely observed in the ISM.
Description
However, the collision data available for this species were calculated using a potential energy surface (PES) that shows differences with more recent surfaces.
The main goal of this work is to report a new set of rate coefficients for the collisional of OCS with He based on a new PES computed at a high level of theory. A large set of ab initio energies calculated using the coupled cluster with single, double, and perturbative triple excitations (CCSD(T)) method at the completed basis set limit for the OCS+He complex is employed to develop an analytical PES. This surface is used in close-coupling calculations, and a new set of collisional rate coefficients for OCS by He is computed.
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The de-excitation rate coefficients are compared with previously available data. Furthermore, a |{DELTA}j|=1 propensity rule was observed. Finally, a set of rate coefficients for the lower thirty-nine rotational states of OCS are reported, which is the largest set determined up to date for this collision.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/680/A113 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023A&A...680A.113D ui.adsabs.harvard.edu/abs/2023A%26A...680A.113D ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/680/a113 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/680/a113 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |