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Resource Record Summary

Catalog Service:
H2/HD molecular data for quasar spectra analysis

Short name: J/A+A/622/A127
IVOA Identifier: ivo://CDS.VizieR/J/A+A/622/A127
DOI (Digital Object Identifier): 10.26093/cds/vizier.36220127
Publisher: CDSivo://CDS[Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/622/A127
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2019 Feb 07 09:50:39Z
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Description


Absorption lines of H_2_ and HD molecules observed at high redshift in the line of sight towards quasars are a test ground to search for variation of the proton-to-electron mass ratio {mu}. For this purpose results from astronomical observations are compared with a compilation of molecular data of the highest accuracy, obtained in laboratory studies as well as in first principles calculations. A comprehensive line list is compiled for H_2_ and HD absorption lines in the Lyman (B^1^{Sigma}^+^_u_-X^1^{Sigma}^+^_g_) and Werner (C^1^{Pi}_u_-X^1^{Sigma}^+^_g_) bands systems up to the Lyman cutoff at 912{AA}. Molecular parameters listed for each line i are the transition wavelength {lambda}_i_, the line oscillator strength f_i_, the radiative damping parameter of the excited state {Gamma}_{i}, and the sensitivity coefficient K_i_ for a variation of the proton-to-electron mass ratio. The transition wavelengths {lambda}_i_ for the H_2_ and HD molecules are determined by a variety of advanced high-precision spectroscopic experiments involving narrowband vacuum ultraviolet lasers, Fourier-transform spectrometers and synchrotron radiation sources. Results for the line oscillator strengths f_i_, damping parameters {Gamma}_i_ and sensitivity coefficients K_i_ are obtained in theoretical quantum chemical calculations. A new list of molecular data is compiled for future analyses of cold clouds of hydrogen absorbers, specifically for studies of {mu}-variation from quasar data. The list is applied in a refit of quasar absorption spectra of B0642-5038 and J1237+0647 yielding constraints on a variation of the proton-to-electron mass ratio {Delta}{mu}/{mu} consistent with previous analyses.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

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

Creators:
Ubachs W.Salumbides E.J.Murphy M.T.Abgrall H.Roueff E.

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

This section provides some status information: the resource version, availability, and relevant dates.

Version: n/a
Availability: This is an active resource.
  • This service provides only public data.
Relevant dates for this Resource:
  • Updated: 2019 Mar 11 08:07:29Z
  • Created: 2019 Feb 07 09:50:39Z

This resource was registered on: 2019 Feb 07 09:50:39Z
This resource description was last updated on: 2021 Oct 21 00:00:00Z

What This Resource is About

This section describes what the resource is, what it contains, and how it might be relevant.

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/622/A127 Literature Reference: 2019A&A...622A.127U

Related Resources:

Other Related Resources
TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]
J/A+AS/141/297 : H_2_ total transition probability (Abgrall+, 2000) ivo://CDS.VizieR/J/A+AS/141/297 [Res. ID]

Data Coverage Information

This section describes the data's coverage over the sky, frequency, and time.

Rights and Usage Information

This section describes the rights and usage information for this data.

Rights:

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/622/A127
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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