Line list and abundance errors Virtual Observatory Resource

Authors
  1. Xylakis-Dornbusch T.
  2. Hansen T.T.
  3. Beers T.C.
  4. Christlieb N.
  5. Ezzeddine R.,Frebel A.
  6. Holmbeck E.
  7. Placco V.M.
  8. Roederer I.U.
  9. Sakari C.M.
  10. Sneden C.
  11. Published by
    CDS
Abstract

In recent years, the R-Process Alliance (RPA) has conducted a successful search for stars that are enhanced in elements produced by the rapid neutron-capture (r-)process. In particular, the RPA has uncovered a number of stars that are strongly enriched in light r-process elements, such as Sr, Y, and Zr. These so-called limited-r stars were investigated to explore the astrophysical production site(s) of these elements. We investigate the possible formation sites for light neutron-capture elements by deriving detailed abundances for neutron-capture elements from high-resolution spectra with a high signal-to-noise ratio of three limited-r stars. We conducted a kinematic analysis and a 1D local thermodynamic equilibrium spectroscopic abundance analysis of three stars. Furthermore, we calculated the lanthanide mass fraction (XLa) of our stars and of limited-r stars from the literature. We found that the abundance pattern of neutron-capture elements of limited-r stars behaves differently depending on their [Ba/Eu] ratios, and we suggest that this should be taken into account in future investigations of their abundances. Furthermore, we found that the XLa of limited-r stars is lower than that of the kilonova AT2017gfo. The latter seems to be in the transition zone between limited-r XLa and that of r-I and r-II stars. Finally, we found that unlike r-I and r-II stars, the current sample of limited-r stars is largely born in the Galaxy and is not accreted.

Keywords
  1. peculiar-variable-stars
  2. chemical-abundances
  3. line-intensities
Bibliographic source Bibcode
2024A&A...688A.123X
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/688/A123
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/688/A123

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/688/A123
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/688/A123
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/688/A123
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/688/A123/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/688/A123/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/688/A123/table3?

History

2024-08-13T07:31:23Z
Resource record created
2024-08-13T06:47:24Z
Updated
2024-08-13T07:31:23Z
Created

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr