Bright white dwarfs with IR excess Virtual Observatory Resource

Authors
  1. Madurga Favieres C.
  2. Kissler-Patig M.
  3. Xu S.
  4. Bonsor A.
  5. Published by
    CDS
Abstract

White dwarfs (WDs) are generally intrinsically faint in the infrared (IR). Excess emission in the infrared results from low-mass companions or dusty material, potentially linked to the on-going accretion of planetary material. This work presents a new catalog of white dwarfs with (candidate) infrared excess. The final sample comes from a cross-match between the Gaia Early Data Release (EDR3) white dwarf candidates, and the CatWISE catalog, with candidate infrared excesses determined considering both magnitude and color excess. A magnitude excess is found to be more reliable than a color excess. The final catalog contains 554 infrared excess candidates (446 are presented for the first time here) from 41020 white-dwarf candidates with a Gaia magnitude of G<18.5mag. Our infrared excess candidate sample extends to a white-dwarf temperature range of 4500-98000K and a white-dwarf mass range of 0.1-1.2M_{sun}_. We caution that these objects should be treated as infrared excess candidates until confirmed with other methods. We present a three-fold increase in the sample of white dwarfs known to have infrared excesses. Among the sample applications is the study of the accretion of planetary material by white dwarfs and the identification of new white-dwarf-brown-dwarf pairs.

Keywords
  1. white-dwarf-stars
  2. infrared-sources
Bibliographic source Bibcode
2024A&A...688A.168M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/688/A168
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/688/A168

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/688/A168
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/688/A168
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/688/A168
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/688/A168/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/688/A168/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/688/A168/table1?
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/688/A168/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/688/A168/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/688/A168/table3?

History

2024-08-15T09:57:47Z
Resource record created
2024-08-15T08:59:01Z
Updated
2024-08-15T09:57:47Z
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