Table · dataset · 2024
VLA 15 & 33GHz obs. of GOALS-ES galaxies
Listed in IVOA Registry (Virtual Observatory)
We present the analysis of ~100pc scale compact radio continuum sources detected in 63 local (ultra)luminous infrared galaxies (U/LIRGs; L_IR_>=10^11^L_{sun}_), using FWHM<~0.1"-0.2" resolution 15 and 33GHz observations with the Karl G. Jansky Very Large Array.
Description
We identify a total of 133 compact radio sources with effective radii of 8-170pc, which are classified into four main categories-"AGN" (active galactic nuclei), "AGN/SBnuc" (AGN-starburst composite nucleus), "SBnuc" (starburst nucleus), and "SF" (star-forming clumps)-based on ancillary data sets and the literature.
We find that "AGN" and "AGN/SBnuc" more frequently occur in late-stage mergers and have up to 3dex higher 33GHz luminosities and surface densities compared with "SBnuc" and "SF," which may be attributed to extreme nuclear starburst and/or AGN activity in the former. Star formation rates (SFRs) and surface densities ({Sigma}SFR) are measured for "SF" and "SBnuc" using both the total 33GHz continuum emission (SFR~0.14-13M_{sun}_/yr, {Sigma}_SFR_~13-1600M_{sun}_/yr/kpc^2^) and the thermal free-free emission from HII regions (median SFR_th_~0.4M_{sun}_/yr, {Sigma}_SFRth_~44M_{sun}_/yr/kpc^2^).
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These values are 1-2dex higher than those measured for similar-sized clumps in nearby normal (non-U/LIRGs). The latter also have a much flatter median 15-33GHz spectral index (~-0.08) compared with "SBnuc" and "SF" (~-0.46), which may reflect higher nonthermal contribution from supernovae and/or interstellar medium densities in local U/LIRGs that directly result from and/or lead to their extreme star-forming activities on 100pc scales.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/940/52 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022ApJ...940...52S ui.adsabs.harvard.edu/abs/2022ApJ...940...52S ↗
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/apj/940/52 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared · Millimeter · Radio
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 74%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/940/52 | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (74%) |
| 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:millimeter | 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 |