Table · dataset · 2025
VLT/MUSE images of 5 nearby galaxies
Listed in IVOA Registry (Virtual Observatory)
We present a comprehensive study of five nearby active galaxies featuring large (tens of kiloparsecs) extended emission-line regions (EELRs).
Description
The study is based on large-format, integral-field spectroscopic observations conducted with the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope (VLT). The spatially resolved kinematics of the ionized gas and stellar components show signs of rotation, bi-conical outflows, and complex behavior likely associated with past interactions.
An analysis of the physical conditions of the EELRs indicates that in these systems the active galactic nucleus (AGN) is the primary ionization source. Using radiative transfer simulations, we compared the ionization state across the EELRs to estimate the required AGN bolometric luminosities at different radial distances. Then, considering the projected light travel time, we reconstructed the inferred AGN luminosity curves.
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We find that all sources are consistent with a fading trend in intrinsic AGN luminosity by 0.2-3dex over timescales of 40000 to 80000-years, with a time dependence consistent with previous studies of fading AGNs. These results support the hypothesis that most AGNs undergo significant fluctuations in their accretion rates over multiple timescales ranging from 10000 to 1000000-years, as proposed by existing theoretical models.
These results provide new insights into the transient phases of AGN activity on previously unexplored scales and their potential long-term impact on their host galaxies through various feedback mechanisms.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/703/A63 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025A&A...703A..63F ui.adsabs.harvard.edu/abs/2025A%26A...703A..63F ↗
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/703/a63 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 71% · Image 65%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/703/a63 | 13 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 (71%) |
| 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].local:modality:image | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (65%) |
| 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 |