Low-mass cool dwarfs of NYMGs from Gaia EDR3 Virtual Observatory Resource

Authors
  1. Lee J.
  2. Song I.
  3. Murphy S.J.
  4. Published by
    CDS
Abstract

Gaia EDR3 offers greatly improved kinematics for nearby objects, including members of nearby young stellar moving groups (NYMGs). In this study, we aim to identify low-mass NYMG members (spectral types of M0 to mid-L) in Gaia EDR3. We calculated spatio-kinematic membership probabilities by utilizing a Bayesian membership probability calculation scheme developed in our previous study. We evaluated stellar youth primarily based on colour-magnitude diagram positions. Combining spatio-kinematic membership assessment and youth evaluation, we identified ~2900 low-mass NYMG candidate members, including ~700 previously claimed members. In the set of ~2200 new candidate members, ~550 appear to be young based on NUV brightness. Our pilot spectroscopic study with Wide Field Spectrograph (WiFeS) on the ANU 2.3-m telescope observed 78 candidates, with 79 per cent confirmed as members. Using our new member sample, we estimated an isochronal age of the {beta} Pictoris Moving Group. The mean age (~10 Myr), which is around half the age of recent estimates, suggests either a truly younger age of the {beta} Pictoris Moving Group or inaccuracies in contemporary isochrones. As the main results of this study, we provide lists of newly confirmed and candidate low-mass NYMG members.

Keywords
  1. milky-way-galaxy
  2. m-stars
  3. l-dwarfs
  4. stellar-associations
  5. early-type-stars
  6. dwarf-stars
  7. brown-dwarfs
  8. astronomical-object-identification
  9. astrometry
  10. proper-motions
  11. visible-astronomy
  12. trigonometric-parallax
  13. radial-velocity
  14. ultraviolet-astronomy
  15. infrared-astronomy
  16. photometry
  17. spectroscopy
  18. stellar-spectral-types
  19. line-intensities
Bibliographic source Bibcode
2022MNRAS.511.6179L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/511/6179
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/511/6179
Document Object Identifer DOI
doi:10.26093/cds/vizier.75116179

Access

IVOA Table Access TAP
https://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).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/511/6179/group?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/511/6179/group?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/511/6179/group?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/511/6179/table4?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/511/6179/table4?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/511/6179/table4?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/511/6179/tableb1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/511/6179/tableb1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/511/6179/tableb1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/511/6179/table6?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/511/6179/table6?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/511/6179/table6?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/511/6179/table7?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/511/6179/table7?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/511/6179/table7?

History

2025-02-21T11:08:17Z
Resource record created
2025-02-21T11:08:17Z
Created
2025-03-07T20:14:29Z
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