Kinematic data of YNMGs from RAVE & Gaia Virtual Observatory Resource

Authors
  1. Ramirez-Preciado V.G.
  2. Roman-Zuniga C.G.
  3. Aguilar L.
  4. Suarez G.
  5. Downes J.J.
  6. Published by
    CDS
Abstract

The purpose of this study is the identification of young (1<age<100Myr), nearby (d<=100pc) moving groups (YNMGs) through their kinematic signature. YNMGs could be the result of the recent dispersal of young embedded clusters, such that they still represent kinematically cold groups, carrying the residual motion of their parental cloud. Using the fact that a large number (~14000) of the RAVE sources with evidence of chromospheric activity also present signatures of stellar youth, we selected a sample of solar-type sources with the highest probability of chromospheric activity to look for common kinematics. We made use of radial velocity information from RAVE and astrometric parameters from GAIA DR2 to construct a 6D position-velocity vector catalog for our full sample. We developed a method based on the grouping of stars with similar orientation of their velocity vectors, which we call the Cone Method Sampling. Using this method, we detected 646 sources with high significance in the velocity space, with respect to the average orientation of artificial distributions made from a purely Gaussian velocity ellipsoid with null vertex deviation. We compared this sample of highly significant sources with a catalog of YNMGs reported in previous studies, which yield 75 confirmed members. From the remaining sample, about 50% of the sources have ages younger than 100Myr, which indicate they are highly probable candidates to be new members of identified or even other YNMGs in the solar neighborhood.

Keywords
  1. Infrared photometry
  2. Optical astronomy
  3. Photometry
  4. Proper motions
  5. Radial velocity
  6. Stellar ages
  7. Stellar masses
Bibliographic source Bibcode
2018ApJ...867...93R
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/867/93
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/867/93
Document Object Identifer DOI
doi:10.26093/cds/vizier.18670093

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/867/93
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/867/93
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/867/93
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/ApJ/867/93/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/867/93/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/867/93/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/867/93/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/867/93/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/867/93/table1?

History

2019-11-05T14:44:13Z
Resource record created
2019-11-05T14:44:13Z
Created
2020-01-07T19:16:22Z
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