Young visual M-dwarf binaries spectra Virtual Observatory Resource

Authors
  1. Calissendorff P.
  2. Janson M.
  3. Bonnefoy M.
  4. Published by
    CDS
Abstract

We present the results from an integral field spectroscopy study of seven close visual binary pairs of young M-dwarf multiple systems. The target systems are part of the astrometric monitoring AstraLux program, surveying hundreds of M-dwarf systems for multiplicity and obtaining astrometric epochs for orbital constraints. Our new VLT/SINFONI data provides resolved spectral type classification in the J, H and K bands for seven of these low-mass M-dwarf binaries, which we determine by comparing them to empirical templates and examining the strength of water absorption in the K-band. The medium resolution K-band spectra also allows us to derive effective temperatures for the individual components. All targets in the survey display several signs of youth, and some have kinematics similar to young moving groups, or low surface gravities which we determine from measuring equivalent widths of gravity sensitive alkali lines in the J-band. Resolved photometry from our targets is also compared with isochrones from theoretical evolutionary models, further implying young ages. Dynamical masses will be provided from ongoing monitoring of these systems, which can be seen as emblematic binary benchmarks that may be used to calibrate evolutionary models for low-mass stars in the future.

Keywords
  1. Multiple stars
  2. Infrared sources
  3. Infrared astronomy
  4. Spectroscopy
Bibliographic source Bibcode
2020A&A...642A..57C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A57
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/642/A57
Document Object Identifer DOI
doi:10.26093/cds/vizier.36420057

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A57
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A57
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A57
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/642/A57/list?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A57/list?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A57/list?
Web browser access HTML
https://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/642/A57

History

2020-10-07T08:17:54Z
Resource record created
2020-10-07T08:17:54Z
Created
2021-01-05T10:44:16Z
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