Table · dataset · 2026
Widefield Arecibo Virgo Extragalactic Survey. II
Listed in IVOA Registry (Virtual Observatory)
Galaxy clusters are extreme environments where interactions with the hot intracluster medium drive rapid galaxy evolution.
Description
These processes can result in the formation of optically dark gas clouds, as was previously observed in Virgo and other clusters. We investigate the distribution and properties of neutral hydrogen (HI) in two large adjoining regions of the Virgo cluster to understand how the cluster environment influences galaxy transformation.
Specifically, we examine the gas content of both star-forming and quiescent populations and search for evidence of gas-loss driven evolution. We have cataloged the 21cm HI Widefield Arecibo Virgo Extragalactic Survey (WAVES) South data using visual and automatic source extraction methods. By combining these results with an optically-selected sample, we compare the HI properties of WAVES South with the previously studied VC1 region.
Read the rest (3 more)
To probe gas reservoirs below the nominal detection limit, we perform a stacking analysis of radio spectra across the WAVES South, VC1 and VC2 footprints. Results. We detect 56 HI sources with a median rms noise of 0.8mJy, including 50 galaxies, two gas clouds (one being optically dark) and the ALFALFA Virgo 7 complex.
Our results show a significantly lower detection fraction in WAVES South compared to VC1 region. Stacking showed no new HI detection at a 0.080mJy rms with a maximum of 157 stacked objects from WAVES South, VC1 and VC2. The lower HI detection fraction suggests that WAVES South is a more dynamically relaxed and evolved environment than the VC1 region.
The presence of residual HI in a small subset of early-type galaxies supports a model of dwarf irregular to dwarf elliptical transformation via environmental stripping. Finally, we note a possible evolutionary link between optically dark clouds and the recently discovered 'blue blobs'.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/713/A284 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2026A&A...713A.284P ui.adsabs.harvard.edu/abs/2026A%26A...713A.284P ↗
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/713/a284 ↗
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/713/a284 | 12 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:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:radio | 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 |