Metallicities of Pristine stars Virtual Observatory Resource

Authors
  1. Youakim K.
  2. Starkenburg E.
  3. Aguado D.S.
  4. Martin N.F.
  5. Fouesneau M.,Gonzalez Hernandez J.I.
  6. Allende Prieto C.
  7. Bonifacio P.
  8. Gentile M.,Kielty C.
  9. Cote P.
  10. Jablonka P.
  11. McConnachie A.
  12. Sanchez Janssen R.,Tolstoy E.
  13. Venn K.
  14. Published by
    CDS
Abstract

The Pristine survey is a narrow-band, photometric survey focused around the wavelength region of the CaII H&K absorption lines, designed to efficiently search for extremely metal-poor stars. In this work, we use the first results of a medium-resolution spectroscopic follow-up to refine the selection criteria for finding extremely metal-poor stars ([Fe/H]<=-3.0) in the Pristine survey. We consider methods by which stars can be selected from available broad-band and infrared photometry plus the additional Pristine narrow-band photometry. The sample consists of 205 stars in the magnitude range 14<V<18. Applying the photometric selection criteria cuts the sample down to 149 stars, and from these we report a success rate of 70 per cent for finding stars with [Fe/H]<=-2.5 and 22 per cent for finding stars with [Fe/H]<=-3.0. These statistics compare favourably with other surveys that search for extremely metal-poor stars, namely an improvement by a factor of ~4-5 for recovering stars with [Fe/H]<=-3.0. In addition, Pristine covers a fainter magnitude range than its predecessors and can thus probe deeper into the Galactic halo.

Keywords
  1. Chemically peculiar stars
  2. Metallicity
  3. Optical astronomy
  4. Sloan photometry
Bibliographic source Bibcode
2017MNRAS.472.2963Y
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/472/2963
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/472/2963

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/472/2963
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/472/2963
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/472/2963
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/472/2963/Sample?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/472/2963/Sample?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/472/2963/Sample?

History

2020-08-11T10:12:20Z
Resource record created
2020-08-11T10:12:20Z
Created
2020-11-16T09:37:21Z
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