3794 open clusters parameters Virtual Observatory Resource

Authors
  1. Hao C.J.
  2. Xu Y.
  3. Hou L.G.
  4. Bian S.B.
  5. Li J.J.
  6. Wu Z.Y.
  7. He Z.H.
  8. Li Y.J.,Liu D.J.
  9. Published by
    CDS
Abstract

The structure and evolution of the spiral arms of the Milky Way are basic but long-standing questions in astronomy. Especially the lifetime of spiral arms, it is still a puzzle and has not been well constrained from observations. In this work, we aim to inspect these issues by using a large catalogue of open clusters. We have compiled a catalogue of 3794 OCs based on Gaia EDR3. A majority of them have accurately determined parallaxes, proper motions and radial velocities. The age parameters for these OCs are also collected or calculated. Then, we analysed their distributions on the Galactic plane, the kinematic properties, the vertical distributions and the regressed properties of subsamples of OCs in order to better understand the nearby spiral structure and its evolution. We find evidence that the nearby spiral arms are compatible with a long lived pattern and might have remained approximately stable for the past 80 million years. Especially, the Local Arm where our Sun is currently located in, is also suggested to be long-lived in nature, and probable a major arm segment in the Milky Way. The evolutionary characteristics of nearby spiral arms show that the dynamic spiral mechanism might be not suitable for our Galaxy. Instead, the density wave theory is more consistent with the observational properties.

Keywords
  1. milky-way-galaxy
  2. open-star-clusters
  3. visible-astronomy
  4. trigonometric-parallax
  5. proper-motions
  6. radial-velocity
Bibliographic source Bibcode
2021A&A...652A.102H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/652/A102
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/652/A102
Document Object Identifer DOI
doi:10.26093/cds/vizier.36520102

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/652/A102
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/652/A102
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/652/A102
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/652/A102/catalog?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/652/A102/catalog?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/652/A102/catalog?

History

2021-08-17T07:57:37Z
Resource record created
2021-08-17T07:01:50Z
Updated
2021-08-17T07:57:37Z
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