Stellar groups in Taurus field from Gaia DR2 & LAMOST Virtual Observatory Resource

Authors
  1. Liu J.
  2. Fang M.
  3. Tian H.
  4. Liu C.
  5. Yang C.
  6. Xue X.
  7. Published by
    CDS
Abstract

In this work, we present a systematic search for stellar groups in the Taurus field by applying the DBSCAN algorithm to the data from Gaia DR2. We find 22 groups, consisting of 8 young groups (Groups 1-8) at ages of 2-4Myr and distances of ~130-170pc, and 14 old groups (Groups 9-22) at ages of 8-49Myr and distances of ~110-210pc. We characterize the disk properties of group members and find 19 new disk-bearing stars, 8 of which are in the young groups with 11 others belonging to the comparatively old groups at the ages of 8-11Myr. We characterize the accretion properties of the group members with H{alpha} emission lines in their Large Sky Area Multi-Object Fibre Spectroscopic Telescope spectra, and discover one source in Group 10 at an age of 10Myr which still shows accretion activity. We investigate the kinematic relations among the old groups, find that Group 9 is kinematically related to the known Taurus members, and exclude any kinematic relations between Groups 10-22 and the known Taurus members.

Keywords
  1. stellar-associations
  2. stellar-distance
  3. stellar-spectral-types
  4. young-stellar-objects
  5. star-forming-regions
Bibliographic source Bibcode
2021ApJS..254...20L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/254/20
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/254/20
Document Object Identifer DOI
doi:10.26093/cds/vizier.22540020

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/254/20
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/254/20
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/254/20
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/ApJS/254/20/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/254/20/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/254/20/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/254/20/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/254/20/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/254/20/table1?

History

2021-09-09T08:14:42Z
Resource record created
2021-09-09T08:14:42Z
Created
2022-03-21T09:33:52Z
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