Eclipsing binary parallaxes with Gaia data Virtual Observatory Resource

Authors
  1. Stassun K.G.
  2. Torres G.
  3. Published by
    CDS
Abstract

We test the parallaxes reported in the Gaia first data release using the sample of eclipsing binaries with accurate, empirical distances from Stassun & Torres (2016, arXiv:1609.02579). We find an average offset of -0.25+/-0.05mas in the sense of the Gaia parallaxes being too small (i.e., the distances too long). The offset does not depend strongly on obvious parameters such as color or brightness. However, we find with high confidence that the offset may depend on ecliptic latitude: the mean offset is -0.38+/-0.06mas in the ecliptic north and -0.05+/-0.09mas in the ecliptic south. The ecliptic latitude dependence may also be represented by the linear relation, {Delta}{pi}~-0.22(+/-0.05)-0.003(+/-0.001)x{beta}mas ({beta} in degrees). Finally, there is a possible dependence of the parallax offset on distance, with the offset becoming negligible for {pi}<~1mas; we discuss whether this could be caused by a systematic error in the eclipsing binary distance scale, and reject this interpretation as unlikely.

Keywords
  1. eclipsing-binary-stars
  2. visible-astronomy
  3. trigonometric-parallax
  4. effective-temperature
Bibliographic source Bibcode
2016ApJ...831L...6S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/831/L6
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/831/L6
Document Object Identifer DOI
doi:10.26093/cds/vizier.18319006

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/831/L6
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/831/L6
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/831/L6
IVOA Table Access TAP
https://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).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/831/L6/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/831/L6/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/831/L6/table1?

History

2017-03-14T08:23:36Z
Resource record created
2017-03-14T08:23:36Z
Created
2017-11-06T12:23:48Z
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