VVV Infrared Astrometric Catalogue v2 release (VIRAC2) Virtual Observatory Resource

Authors
  1. Smith L.C.
  2. Lucas P.W.
  3. Koposov S.E.
  4. Gonzalez-Fernandez C.,Alonso-Garcia J.
  5. Minniti D.
  6. Sanders J.L.
  7. Bedin L.R.
  8. Belokurov V.,Evans N.W.
  9. Hempel M.
  10. Ivanov V.D.
  11. Kurtev R.G.
  12. Saito R.K.
  13. Published by
    CDS
Abstract

We present VIRAC2, a catalogue of positions, proper motions, parallaxes and Z, Y, J, H, and Ks near-infrared photometric time series of 545,346,537 unique stars. The catalogue is based on a point spread function fitting reduction of nearly a decade of VISTA VVV and VVVX images, which cover 560deg^2^ of the Southern Galactic plane and bulge. The catalogue is complete at the >90 per cent level for 11<K_s_mag<16 sources, but extends to Ks~17.5mag in most fields. Astrometric performance for 11<K_s_mag<14 sources is typically ~0.37mas/yr per dimension for proper motion, and 1mas for parallax. At Ks=16 the equivalent values are around 1.5mas/yr and 5mas. These uncertainties are validated against Gaia DR3 and Hubble Space Telescope astrometry. The complete catalogues are available via the ESO archive. We perform an initial search of the catalogue for nearby ultracool dwarf candidates. In total, we find 26 new sources whose parallaxes place them within 50pc of the Sun. Among them we find two high-confidence T dwarfs and a number of other sources that appear to lie close to the L/T transition.

Keywords
  1. surveys
  2. infrared-sources
  3. infrared-photometry
  4. proper-motions
  5. visible-astronomy
  6. trigonometric-parallax
Bibliographic source Bibcode
2025MNRAS.536.3707S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/II/387
IVOA Identifier IVOID
ivo://CDS.VizieR/II/387

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/387
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/387
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/387
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/II/387/virac2?
https://vizier.iucaa.in/viz-bin/conesearch/II/387/virac2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/II/387/virac2?

History

2025-04-29T10:33:57Z
Resource record created
2025-04-29T10:33:57Z
Created
2025-05-27T09:07:35Z
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