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Resource Record Summary

Catalog Service:
Isotopic acetone laboratory rotational spectroscopy

Short name: J/A+A/629/A72
IVOA Identifier: ivo://CDS.VizieR/J/A+A/629/A72
DOI (Digital Object Identifier): 10.26093/cds/vizier.36290072
Publisher: CDSivo://CDS[Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/629/A72
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2019 Sep 11 12:54:20Z
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Description


Spectra of minor isotopic species of molecules that are abundant in space may also be detectable. Their respective isotopic ratios may provide clues about the formation of these molecules. Emission lines of acetone in the hot molecular core Sagittarius B2(N2) are strong enough to warrant a search for its singly substituted 13C isotopologs. We want to study the rotational spectra of CH_3_^13^C(O)CH_3_ and ^13^CH_3_C(O)CH_3_ and search for them in Sagittarius B2(N2). We investigated the laboratory rotational spectrum of isotopically enriched CH_3_^13^C(O)CH_3_ between 40GHz and 910GHz and of acetone between 36GHz and 910GHz in order to study ^13^CH_3_C(O)CH_3_ in natural isotopic composition. In addition, we searched for emission lines produced by these species in a molecular line survey of Sagittarius B2(N) carried out with the Atacama Large Millimeter/submillimeter Array (ALMA). Discrepancies between predictions of the main isotopic species and the ALMA spectrum prompted us to revisit the rotational spectrum of this isotopolog. We assigned 9711 new transitions of CH_3_^13^C(O)CH_3_ and 63 new transitions of ^13^CH_3_C(O)CH_3_ in the laboratory spectra. More than 1000 additional lines were assigned for the main isotopic species.We modeled the ground state data of all three isotopologs satisfactorily with the ERHAM program. We find that models of the torsionally excited states {nu}_12_=1 and {nu}_17_=1 of CH_3_C(O)CH_3_ improve only marginally. No transition of CH_3_^13^C(O)CH_3_ is clearly detected toward the hot molecular core Sgr B2(N2). However, we report a tentative detection of ^13^CH_3_C(O)CH_3_ with a ^12^C/^13^C isotopic ratio of 27 that is consistent with the ratio previously measured for alcohols in this source. Several dozens of transitions of both torsional states of the main isotopolog are detected as well. Our predictions of CH_3_^13^C(O)CH_3_ and CH_3_C(O)CH_3_ are reliable into the terahertz region. The spectrum of ^13^CH_3_C(O)CH_3_ should be revisited in the laboratory with an enriched sample. The torsionally excited states v_12_=1 and v_17_=1 of CH_3_C(O)CH_3_ were not reproduced satisfactorily in our models. Nevertheless, transitions pertaining to both states could be identified unambiguously in Sagittarius B2(N2).

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About the Resource Providers

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Publisher: CDSivo://CDS[Pub. ID]

Creators:
Ordu M.H.Zingsheim O.Belloche A.Lewen F.Garrod R.T.Menten K.M.Schlemmer S.Mueller H.S.P.

Contact Information:
X CDS support team
Email: cds-question at unistra.fr
Address: CDS
Observatoire de Strasbourg
11 rue de l'Universite
F-67000 Strasbourg
France

Status of This Resource

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Version: n/a
Availability: This is an active resource.
  • This service provides only public data.
Relevant dates for this Resource:
  • Updated: 2019 Sep 16 08:20:26Z
  • Created: 2019 Sep 11 12:54:20Z

This resource was registered on: 2019 Sep 11 12:54:20Z
This resource description was last updated on: 2021 Oct 21 00:00:00Z

What This Resource is About

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Resource Class: CatalogService
This resource is a service that provides access to catalog data. You can extract data from the catalog by issuing a query, and the matching data is returned as a table.
Resource type keywords:
  • Catalog
Subject keywords:
  • Atomic physics
Intended audience or use:
  • Research: This resource provides information appropriate for supporting scientific research.
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/629/A72 Literature Reference: 2019A&A...629A..72O

Related Resources:

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TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]

Data Coverage Information

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Available Service Interfaces

Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for this service interface:
Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for this service interface:
  • URL-based interface: http://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/629/A72
Table Access Protocol - Auxiliary ServiceXX

This is a standard IVOA service that takes as input an ADQL or PQL query and returns tabular data.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for the standard interface:
  • http://tapvizier.cds.unistra.fr/TAPVizieR/tap


Developed with the support of the National Science Foundation
under Cooperative Agreement AST0122449 with the Johns Hopkins University
The NAVO project is a member of the International Virtual Observatory Alliance

This NAVO Application is hosted by the Space Telescope Science Institute

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