Table · dataset · 2022
VCCS Epoch 1 Bright Catalog Release
Listed in IVOA Registry (Virtual Observatory)
The VLA Low Band Ionosphere and Transient Experiment (VLITE) is a commensal observing system on the Karl G. Jansky Very Large Array (VLA).
Description
A 64MHz sub-band centered at 340MHz is recorded and correlated for up to 18 antennas during nearly all regular VLA operations. Pipeline software calibrates and images the data within a few days after observation.
Here we give a brief overview of the instrument and present the first epoch of the VLITE Commensal Sky Survey (VCSS). These data were taken simultaneously with the ongoing VLA Sky Survey (VLASS; url: science.nrao.edu/vlass/). VLITE breaks the continuous "on-the-fly" (OTF) VLASS scans into 2-second integrations and correlates these at a central "pointing" position every 1.5 degrees in right ascension.
Read the rest (2 more)
VLITE's field of view is 2 degrees across, while the declination rows are spaced by only 7.25', so there is a large overlap between each row and a high tolerance for failure. The data for each correlator position is imaged separately, corrected and weighted by an appropriately elongated primary beam model, and then combined in the image plane to create a mosaic of the sky. Catalogs of the sources in both the individual pointing images and the final mosaics are extracted using PyBDSF.
In addition to providing a sky model at 340MHz, VCSS complements VLASS by providing source spectral indices and intermediate resolution images for extended sources. The observations also provide a rich database for transient searches
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/VIII/111 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2021AAS...23721106P ui.adsabs.harvard.edu/abs/2021AAS...23721106P ↗
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/viii/111 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Radio
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Image 75%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/viii/111 | 11 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:radio | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (75%) |
| 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 |