Table · dataset · 2018
g'G'Ag-CH3CH2CHOHCH2OH transition frequencies
Listed in IVOA Registry (Virtual Observatory)
The continuously enhanced sensitivity of radioastronomical observations allows the detection of increasingly complex organic molecules.
Description
These systems often exist in a large number of isomers leading to very congested spectra. We explore the conformational space of 1,2-butanediol and provide sets of spectroscopic parameters to facilitate searches for this molecule at millimeter wavelengths.
We recorded the rotational spectrum of 1,2-butanediol in the 59.6-103.6GHz frequency region (5.03-2.89mm) using a free-jet millimeter-wave absorption spectrometer, and we analyzed the properties of 24 isomers with quantum chemical calculations. Selected measured transition lines were then searched on publicly available ALMA Band 3 data on IRAS 16293-2422 B. We assigned the spectra of six conformers, namely aG'Ag, gG'Aa, g'G'Ag, aG'G'g, aG'Gg, and g'GAa, to yield the rotational constants and centrifugal distortion constants up to the fourth or sixth order.
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The most intense signal belong to the aG'Ag species, that is the global minimum. Search for the corresponding 30_x,30_-29_x,29_ transition lines toward IRAS 16293-2422 B was unsuccessful. Our present data will be helpful for identifying 1,2-butanediol at millimeter wavelengths with radio telescope arrays.
Among all possible conformers, first searches should be focused on the aG'Ag conformers in the 400-800GHz frequency spectral range.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/619/A140 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2018A&A...619A.140V ui.adsabs.harvard.edu/abs/2018A%26A...619A.140V ↗
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/619/a140 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Millimeter
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/619/a140 | 14 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 | |
| concepts[modality].ivoa_waveband:millimeter | source · 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 |