A 3D view of the Hyades population Virtual Observatory Resource

Authors
  1. Lodieu N.
  2. Smart R.L.
  3. Perez-Garrido A.
  4. Silvotti R.
  5. Published by
    CDS
Abstract

Our scientific goal is to provide a 3D map of the nearest open cluster to the Sun, the Hyades, combining the recent release of Gaia astrometric data, ground-based parallaxes of sub-stellar member candidates and photometric data from surveys which cover large areas of the cluster. We combined the second Gaia release with ground-based H-band parallaxes obtained with the infrared camera on the 2-m robotic Liverpool telescope to astrometrically identify stellar and sub-stellar members of the Hyades, the nearest open cluster to the Sun. We find 1764 objects within 70 degree radius from the cluster center from the Gaia second data release, whose kinematic properties are consistent with the Hyades. We limit our study to 30pc from the cluster center (47.03+/-0.20pc) where we identify 710 candidate members, including 85 and 385 in the core and tidal radius, respectively. We determine proper motions and parallaxes of eight candidate brown dwarf members and confirm their membership. Using the 3D positions and a model-based mass-luminosity relation we derive a luminosity and mass function in the 0.04 to 2.5M_{sun}_ range. We confirm evidence for mass segregation in the Hyades and find a dearth of brown dwarfs in the core of the cluster. From the white dwarf members we estimate an age of 640^+67^_-49_Myr. We identify a list of members in the Hyades cluster from the most massive stars down to the brown dwarfs. We produce for the first time a 3D map of the Hyades cluster in the stellar and sub-stellar regimes and make available the list of candidate members.

Keywords
  1. open-star-clusters
  2. stellar-populations
  3. stellar-distance
Bibliographic source Bibcode
2019A&A...623A..35L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/623/A35
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/623/A35
Document Object Identifer DOI
doi:10.26093/cds/vizier.36230035

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/623/A35
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/623/A35
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/623/A35
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/623/A35/tablec1?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/623/A35/tablec1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/623/A35/tablec1?

History

2019-02-27T06:16:26Z
Resource record created
2019-02-27T06:16:26Z
Created
2020-09-30T07:35:48Z
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