The Gaia 20 pc white dwarf sample Virtual Observatory Resource

Authors
  1. Hollands M.A.
  2. Tremblay P.-E.
  3. Gansicke B.T.
  4. Gentile-Fusillo N.P.,Toonen S.
  5. Published by
    CDS
Abstract

Using Gaia DR2 data, we present an up-to-date sample of white dwarfs within 20pc of the Sun. In total we identified 139 systems in Gaia DR2, nine of which are new detections, with the closest of these located at a distance of 13.05pc. We estimated atmospheric parameters for all stellar remnants based on the Gaia parallaxes and photometry. The high precision and completeness of the Gaia astrometry allowed us to search for wide binary companions. We re-identified all known binaries where both components have accurate DR2 astrometry, and established the binarity of one of the nine newly identified white dwarfs. No new companions were found to previously known 20pc white dwarfs. Finally, we estimated the local white dwarf space-density to be (4.49+/-0.38)x10^-3^pc^-3^, having given careful consideration to the distance-dependent Gaia completeness, which misses known objects at short distances, but is close to complete for white dwarfs near 20pc.

Keywords
  1. Hertzsprung Russell diagram
  2. Apparent magnitude
  3. White dwarf stars
Bibliographic source Bibcode
2018MNRAS.480.3942H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/480/3942
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/480/3942

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/480/3942
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/480/3942
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/480/3942
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/MNRAS/480/3942/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/480/3942/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/480/3942/table1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/480/3942/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/480/3942/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/480/3942/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/480/3942/table5?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/480/3942/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/480/3942/table5?

History

2022-06-20T13:04:39Z
Resource record created
2022-06-20T13:04:39Z
Created
2022-11-25T13:31:57Z
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