UKIRT Hemisphere Survey L, T & Y dwarfs catalog Virtual Observatory Resource

Authors
  1. Schneider A.C.
  2. Munn J.A.
  3. Vrba F.J.
  4. Bruursema J.
  5. Dahm S.E.,Williams S.J.
  6. Liu M.C.
  7. Dorland B.N.
  8. Published by
    CDS
Abstract

We present the positions, proper motions, and near-infrared photometry for 966 known objects with spectral types later than M that were observed as part of the the UKIRT Hemisphere Survey (UHS). We augment the photometry and astrometry from UHS with information from Gaia DR3, Pan-STARRS DR2, and CatWISE 2020 to produce a database of homogeneous photometry and astrometry for this sample. The multi-epoch survey strategy of UHS allows us to determine the proper motions for most sources, with a median proper motion uncertainty of ~3.6mas/yr. Our UHS proper motion measurements are generally in good agreement with those from Gaia DR3, Pan-STARRS, and CatWISE 2020, with UHS proper motions typically more precise than those from CatWISE 2020 and Pan-STARRS but not Gaia DR3. We critically analyze the publicly available spectra for 406 members of this sample and provide updated near-infrared spectral types for ~100 objects. We determine typical colors as a function of spectral type and provide absolute magnitude versus spectral type relations for UHS J- and K-band photometry. Using newly determined proper motions, we highlight several objects of interest, such as objects with large tangential velocities, widely separated co-moving companions, and potential members of young nearby associations.

Keywords
  1. l-dwarfs
  2. dwarf-stars
  3. infrared-photometry
  4. visible-astronomy
  5. broad-band-photometry
  6. astrometry
Bibliographic source Bibcode
2023AJ....166..103S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/103
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/166/103

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/166/103
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/166/103
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/166/103
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2024-04-05T09:19:08Z
Resource record created
2024-04-05T09:19:08Z
Created
2024-04-12T06:29:44Z
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