Southern ultracool dwarfs in young moving groups Virtual Observatory Resource

Authors
  1. Clarke J.R.A.
  2. Pinfield D.J.
  3. Galvez-ortiz M.C.
  4. Jenkins J.S.,Burningham B.
  5. Deacon N.R.
  6. Jones H.R.A.
  7. Pokorny R.S.
  8. Barnes J.R.,Day-Jones A.C.
  9. Published by
    CDS
Abstract

We associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups (MGs) using photometric and astrometric selection techniques. Of these objects, we present high-resolution spectroscopy for seven candidates and combine these with previous measurements from the literature to determine spectral types and radial velocities. We thus constrain distance and space motion spectroscopically, allowing the kinematic membership of the MGs to be assessed. Possible membership of MGs has allowed ages and metallicities to be constrained for these objects and evolutionary models have been used to estimate their mass. We estimate that up to ~75 of our candidate MG members should be genuine, and discuss future work that will confirm and exploit this major new sample.

Keywords
  1. stellar-associations
  2. dwarf-stars
  3. late-type-stars
  4. infrared-photometry
  5. proper-motions
Bibliographic source Bibcode
2010MNRAS.402..575C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/402/575
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/402/575

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/402/575
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/402/575
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/402/575
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IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/402/575/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/402/575/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/402/575/table2?

History

2015-10-23T15:09:26Z
Resource record created
2015-10-23T15:09:26Z
Created
2017-12-18T07:57:08Z
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