Table · dataset · 2025
VVV galaxies behind the Milky Way
Listed in IVOA Registry (Virtual Observatory)
The detection of extragalactic sources beyond the Milky Way is limited by the location of solar system.
Description
In the Zone of Avoidance (ZOA), optical observations are hindered by stellar crowding and Galactic absorption. To fully understand the background galaxy population in this region, observations at longer wavelengths are needed.
The objective of this study is to determine the characteristics of galaxies situated behind the Milky Way bulge through the use of near-infrared (NIR) data obtained from the VISTA Variables in Via Lactea (VVV) survey. The galaxy candidates were visually confirmed, and a morphological classification of all sources was performed based on their appearance, differentiating between elliptical, spiral, undefined, and doubtful galaxies.
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Additionally, the surrounding area was classified based on the number of sources detected in the same target field. Isolated galaxies, galaxies with close companions, and galaxies in denser environments were catalogued. Following a visual inspection, 14480 galaxy candidates were classified morphologically: 3702 as elliptical, 1704 as spiral, 6425 as undefined, and 2649 as doubtful.
Environmental classification showed that 73.9% were isolated, 12.4% had close companions, and 13.7% were in denser environments. Our catalogue shows slower proper motions than star catalogues. The majority of galaxies classified as elliptical and spiral manifest SExtractor parameters that are indicative of this category of sources.
Additionally, elliptical galaxies in denser environments appear redder than spiral galaxies in isolated environments. A total of 14480 galaxy candidates were subjected to a morphological classification in the Milky Way bulge region. This result verifies the efficacy of the VVV/VVVX survey in identifying and characterising a diverse range of galaxies and extragalactic structures that are obscured by the Milky Way, thereby contributing to a more profound understanding of the universe in the ZOA.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/698/A214 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025A&A...698A.214G ui.adsabs.harvard.edu/abs/2025A%26A...698A.214G ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/698/a214 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/698/a214 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |