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Resource Record Summary

Catalog Service:
IRON Project XXXV. Fe XXIV and Fe XXV

Short name: J/A+AS/135/347
IVOA Identifier: ivo://CDS.VizieR/J/A+AS/135/347Publisher: CDSivo://CDS[Pub. ID]
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/A+AS/135/347
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2009 Sep 30 23:05:59Z
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Description


The first large-scale calculations of relativistic radiative transition probabilities from the Iron Project is reported for dipole allowed and intercombination (E1) transitions in Li-like Fe XXIV and He-like Fe XXV. The ab intio calculations are carried out in the close coupling approximation using the Breit-Pauli R-matrix method in intermediate coupling characterized by SLJ, with total (2S+1)=2,4, L=7, J=1/2-11/2 even and odd parity, for Fe XXIV, and with total (2S+1)=1,3, L=9, and J=0-4 for Fe XXV. The eigenfunction expansions for the target ions include 13 levels up to the n=3 for Fe XXV, and 16 levels up to the n=4 for Fe XXVI, respectively. The calculated number of bound levels, 83 for Fe XXIV and 138 for Fe XXV, is much larger than experimentally observed. The level energies are in good agreement for the common levels. All dipole and intercombination fine structure transitions involving the calculated bound levels up to n=10 and l=5 or 6 are considered. Oscillator strengths, line strengths, and Einstein A-coefficients are tabulated for 802 transitions in Fe XXIV and 2579 transitions in Fe XXV. The results compare well with limited subsets of transitions considered in previous works including fully relativistic and QED corrections. Additional comparisons between the length and the velocity formulations indicate an overall accuracy between 1-10%. The range of uncertainty is indicative of the relatively small influence of atomic effects, such as the two-body Breit interaction terms and finite nuclear mass term, that are not included in the Breit-Pauli approximation employed in the present calculations. The extensive set of data is expected to be useful in the analysis of X-ray and XUV spectra from astrophysical sources.

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About the Resource Providers

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

Creators:
Nahar S NPradhan A.K.

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

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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: 2009 Sep 30 23:12:53Z
  • Created: 2009 Sep 30 23:05:59Z

This resource was registered on: 2009 Sep 30 23:05:59Z
This resource description was last updated on: 2021 Oct 21 00:00:00Z

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Resource Class: CatalogService
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Resource type keywords:
  • Catalog
Subject keywords:
  • Atomic physics
Intended audience or use:
  • Research: This resource provides information appropriate for supporting scientific research.
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/A+AS/135/347 Literature Reference: 1999A&AS..135..347N

Related Resources:

Other Related Resources
TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]
J/A+AS/103/273 : IRON Project II IR collision strengths of C-like ions ivo://CDS.VizieR/J/A+AS/103/273 [Res. ID]

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Custom Service

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VO Compliance: Level 2: This is a VO-compliant resource.
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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.unistra.fr/viz-bin/votable?-source=J/A+AS/135/347
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.u-strasbg.fr/TAPVizieR/tap


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