Local stellar halo member stars from Gaia DR2 & LAMOST Virtual Observatory Resource

Authors
  1. Li H.
  2. Du C.
  3. Liu S.
  4. Donlon T.
  5. Newberg H.J.
  6. Published by
    CDS
Abstract

Based on the second Gaia data release and spectroscopy from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope Data, we identified 20,089 halo stars kinematically and chemically. The halo streams in the solar neighborhood could be detected in the space of energy and angular momentum. We reshuffle the velocities of these stars to determine the significance of substructure. Finally, we identify four statistically significant substructures that are labeled GL-1 through 4. Among these substructures, GL-1 is a previously known stream ("N2" stream), and the other three substructures are new. These substructures may be the debris of dwarf galaxy accretion event; their dynamical and chemical information can help us to understand the history of the Milky Way.

Keywords
  1. halo-stars
  2. milky-way-galaxy
  3. stellar-associations
  4. metallicity
  5. visible-astronomy
  6. spectroscopy
  7. surveys
Bibliographic source Bibcode
2019ApJ...874...74L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/874/74
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/874/74

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/874/74
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/874/74
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/874/74
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/874/74/members?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/874/74/members?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/874/74/members?

History

2023-10-27T07:41:31Z
Resource record created
2023-10-27T07:08:09Z
Updated
2023-10-27T07:41:31Z
Created

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