Spectroscopy of Pristine EMP star candidates Virtual Observatory Resource

Authors
  1. Aguado D.S.
  2. Youakim K.
  3. Gonzalez Hernandez J.I.
  4. Allende Prieto C.,Starkenburg E.
  5. Martin N.
  6. Bonifacio P.
  7. Arentsen A.
  8. Caffau E.,Peralta de Arriba L.
  9. Sestito F.
  10. Garcia-Dias R.
  11. Fantin N.
  12. Hill V.,Jablonca P.
  13. Jahandar F.
  14. Kielty C.
  15. Longeard N.
  16. Lucchesi R.,Sanchez-Janssen R.
  17. Osorio Y.
  18. Palicio P.A.
  19. Tolstoy E.
  20. Wilson T.G.,Cote P.
  21. Kordopatis G.
  22. Lardo C.
  23. Navarro J.F.
  24. Thomas G.F.
  25. Venn K.
  26. Published by
    CDS
Abstract

We present the results of a 3-yr long, medium-resolution spectroscopic campaign aimed at identifying very metal-poor stars from candidates selected with the CaHK, metallicity-sensitive Pristine survey. The catalogue consists of a total of 1007 stars, and includes 146 rediscoveries of metal-poor stars already presented in previous surveys, 707 new very metal-poor stars with [Fe/H]<-2.0, and 95 new extremely metal-poor stars with [Fe/H]<-3.0. We provide a spectroscopic [Fe/H] for every star in the catalogue, and [C/Fe] measurements for a subset of the stars (10 per cent with [Fe/H]<-3 and 24 per cent with -3<[Fe/H]<-2) for which a carbon determination is possible, contingent mainly on the carbon abundance, effective temperature and signal-to-noise ratio of the stellar spectra. We find an average carbon enhancement fraction ([C/Fe]>=+0.7) of 41+/-4 per cent for stars with -3<[Fe/H]<-2 and 58+/-14 per cent for stars with [Fe/H]<-3, and report updated success rates for the Pristine survey of 56 per cent and 23 per cent to recover stars with [Fe/H]<-2.5 and <-3, respectively. Finally, we discuss the current status of the survey and its preparation for providing targets to upcoming multi-object spectroscopic surveys such as William Herschel Telescope Enhanced Area Velocity Explorer.

Keywords
  1. metallicity
  2. photometry
  3. spectroscopy
  4. effective-temperature
  5. visible-astronomy
Bibliographic source Bibcode
2019MNRAS.490.2241A
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/490/2241
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/490/2241

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/490/2241
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/490/2241
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/490/2241
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/MNRAS/490/2241/table4?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/490/2241/table4?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/490/2241/table4?

History

2023-03-21T13:04:58Z
Resource record created
2023-03-21T13:04:58Z
Created
2023-08-25T13:28:14Z
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