Carbon-enhanced metal-poor stars sample Virtual Observatory Resource

Authors
  1. Caffau E.
  2. Gallagher A.J.
  3. Bonifacio P.
  4. Spite M.
  5. Duffau S.,Spite F.
  6. Monaco L.
  7. Sbordone L.
  8. Published by
    CDS
Abstract

Carbon-enhanced metal-poor (CEMP) stars represent a sizeable fraction of all known metal-poor stars in the Galaxy. Their formation and composition remains a significant topic of investigation within the stellar astrophysics community. We analysed a sample of low-resolution spectra of 30 dwarf stars, obtained using the the visual and near UV FOcal Reducer and low dispersion Spectrograph for the Very Large Telescope (FORS/VLT) of the European Southern Observatory (ESO) and the Gemini Multi-Object Spectrographs (GMOS) at the GEMINI telescope, to derive their metallicity and carbon abundance. We derived C and Ca from all spectra, and Fe and Ba from the majority of the stars. Conclusions. We have extended the population statistics of CEMP stars and have confirmed that in general, stars with a high C abundance belonging to the high C band show a high Ba-content (CEMP-s or -r/s), while stars with a normal C-abundance or that are C-rich, but belong to the low C band, are normal in Ba (CEMP-no).

Keywords
  1. population-ii-stars
  2. chemically-peculiar-stars
  3. carbon-stars
  4. chemical-abundances
  5. radial-velocity
Bibliographic source Bibcode
2018A&A...614A..68C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/614/A68
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/614/A68
Document Object Identifer DOI
doi:10.26093/cds/vizier.36140068

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/614/A68
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/614/A68
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/614/A68
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/614/A68/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/614/A68/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/614/A68/table1?

History

2018-06-15T09:04:20Z
Resource record created
2018-06-15T09:04:20Z
Created
2018-09-18T14:33:58Z
Updated

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