SMGPS Local Void HI galaxy catalogue Virtual Observatory Resource

Authors
  1. Kurapati S.
  2. Kraan-korteweg R.C.
  3. Pisano D.J.
  4. Chen H.
  5. Rajohnson S.H.A.,Steyn N.
  6. Frank B.
  7. Serra P.
  8. Goedhart S.
  9. Camilo F.
  10. Published by
    CDS
Abstract

The Local Void is one of the nearest large voids, located at a distance of 23Mpc. It lies largely behind the Galactic Bulge and is therefore extremely difficult to observe. We use HI 21cm emission observations from the SARAO MeerKAT Galactic Plane Survey (SMGPS) to study the Local Void and its surroundings over the Galactic longitude range 329deg<l<55deg, Galactic latitude |b|<1.5deg, and redshift cz<7500km/s. We have detected 291 galaxies of median rms sensitivity 0.44 mJy per beam per 44 km/s channel. We find 17 galaxies deep inside the Void, 96 at the border of the Void, while the remaining 178 galaxies are in average density environments. The extent of the Void is ~58Mpc. It is severely underdense for the longitude range 350deg<l<35deg up to redshift z<4500km/s. The galaxies in the Void tend to have HI masses that are lower (by approximately 0.25dex) than their average density counterparts. We find several potential candidates for small groups of galaxies, of which two groups (with 3 members and 5 members) in the Void show signs of filamentary substructure within the Void.

Keywords
  1. galaxies
  2. catalogs
  3. surveys
  4. h-i-line-emission
  5. radial-velocity
  6. redshifted
  7. astrometry
  8. milky-way-galaxy
Bibliographic source Bibcode
2024MNRAS.528..542K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/528/542
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/528/542

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/528/542
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/528/542
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/528/542
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/MNRAS/528/542/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/542/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/542/table1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/528/542/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/542/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/542/table3?

History

2026-07-28T14:45:45Z
Resource record created
2026-07-28T13:47:07Z
Updated
2026-07-28T14:45:45Z
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