Binaries with F, G or K primaries and M dwarfs Virtual Observatory Resource

Authors
  1. Montes D.
  2. Gonzalez-Peinado R.
  3. Tabernero H.M.
  4. Caballero J.A.
  5. Marfil E.,Alonso-Floriano F.J.
  6. Cortes-Contreras M.
  7. Gonzalez Hernandez J.I.,Klutsch A.
  8. Moreno-Jodar C.
  9. Published by
    CDS
Abstract

We investigated almost 500 stars distributed among 193 binary or multiple systems made of late-F, G-, or early-K primaries and late-K or M dwarf companion candidates. For all of them, we compiled or measured coordinates, J-band magnitudes, spectral types, distances, and proper motions. With these data, we established a sample of 192 physically bound systems. In parallel, we carried out observations with HERMES/Mercator and obtained high-resolution spectra for the 192 primaries and five secondaries. We used these spectra and the automatic STEPAR code for deriving precise stellar atmospheric parameters: Teff, logg, {xi}, and chemical abundances for 13 atomic species, including [Fe/H]. After computing Galactocentric space velocities for all the primary stars, we performed a kinematic analysis and classified them in different Galactic populations and stellar kinematic groups of very different ages, which match our own metallicity determinations and isochronal age estimations. In particular, we identified three systems in the halo and 33 systems in the young Local Association, Ursa Major and Castor moving groups, and IC 2391 and Hyades Superclusters. We finally studied the exoplanet-metallicity relation in our 193 primaries and made a list 13 M-dwarf companions with very high metallicity that can be the targets of new dedicated exoplanet surveys. All in all, our dataset will be of great help for future works on the accurate determination of metallicity of M dwarfs.

Keywords
  1. multiple-stars
  2. m-stars
  3. dwarf-stars
Bibliographic source Bibcode
2018MNRAS.479.1332M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/479/1332
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/479/1332
Document Object Identifer DOI
doi:10.26093/cds/vizier.74791332

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/479/1332
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/479/1332
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/479/1332
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/479/1332/tableb1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/479/1332/tableb1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/479/1332/tableb1?

History

2018-07-26T09:34:36Z
Resource record created
2018-07-26T09:34:36Z
Created
2024-08-18T20:20:31Z
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