3-D selection of 167 sub-stellar companions Virtual Observatory Resource

Authors
  1. Feng F.
  2. Butler R.P.
  3. Vogt S.S.
  4. Clement M.S.
  5. Tinney C.G.
  6. Cui K.,Aizawa M.
  7. Jones H.R.A.
  8. Bailey J.
  9. Burt J.
  10. Carter B.D.
  11. Crane J.D.,Flammini Dotti F.
  12. Holden B.
  13. Ma B.
  14. Ogihara M.
  15. Oppenheimer R.,O'Toole S.J.
  16. Shectman S.A.
  17. Wittenmyer R.A.
  18. Wang S.X.
  19. Wright D.J.,Xuan Y.
  20. Published by
    CDS
Abstract

We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in previous work. We find 914 radial velocity signals with periods longer than 1000 days. Around these signals, 167 cold giants and 68 other types of companions are identified, through combined analyses of radial velocity, astrometry, and imaging data. Without correcting for detection bias, we estimate the minimum occurrence rate of the wide-orbit brown dwarfs to be 1.3%, and find a significant brown-dwarf valley around 40M_Jup_. We also find a power-law distribution in the host binary fraction beyond 3 au, similar to that found for single stars, indicating no preference of multiplicity for brown dwarfs. Our work also reveals nine substellar systems (GJ 234 B, GJ 494 B, HD 13724 b, HD 182488 b, HD 39060 b and c, HD 4113 C, HD 42581 d, HD 7449 B, and HD 984 b) that have previously been directly imaged, and many others that are observable at existing facilities. Depending on their ages, we estimate that an additional 10-57 substellar objects within our sample can be detected with current imaging facilities, extending the imaged cold (or old) giants by an order of magnitude.

Keywords
  1. Dwarf stars
  2. Subdwarf stars
  3. Exoplanets
  4. Orbits
  5. Optical astronomy
Bibliographic source Bibcode
2022ApJS..262...21F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/262/21
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/262/21
Document Object Identifer DOI
doi:10.26093/cds/vizier.22620021

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/262/21
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/262/21
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/262/21
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/ApJS/262/21/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/262/21/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/262/21/table3?

History

2022-09-19T13:56:14Z
Resource record created
2022-09-19T13:56:14Z
Created
2022-10-26T08:52:11Z
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