Table · dataset · 2025
Luminous quasars at z~5 absorbers
Listed in IVOA Registry (Virtual Observatory)
Outflows from active galactic nuclei are invoked as the principal feedback process regulating the co-evolution of supermassive black holes and their host galaxies.
Description
Because of their multi-phase and multi-scale nature, an exhaustive description of these winds should exploit multiple tracers. However, connecting various outflow features remains a challenge.
The aim of this work is to provide a complete characterisation of outflows in a sample of z~5 quasars, by exploiting the combination of different emission and absorption tracers. We analysed the UV/optical and FIR continuum, line emission, and absorption in a sample of 39 z~5 quasars observed with VLT/X-Shooter and ALMA (available for six objects). We identified broad and narrow absorption lines associated with the quasar and emission lines to determine black hole masses and bolometric luminosities.
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Our sample encompasses massive (M_BH,MgII_=10^8.5-10^M_{sun}_) and luminous (L_bol_=10^46.9-48^erg/s) quasars at redshift 5~5.7. They display powerful ionised outflows detected in both emission and absorption, with velocities exceeding 48000km/s in some cases, and lie above the local black hole - host galaxy mass relation, exhibiting a behaviour similar to that of z~6 quasars. These findings suggest a phase of efficient black hole feedback occurring at redshift z~6 and likely persisting down to z~5, characterised by rapid black hole growth exceeding that of the host galaxy.
The fraction of quasars with outflow detections in absorption is higher for larger CIV-MgII velocity shifts, suggesting that while the physical mechanisms powering the two outflow phenomena detected in emission and absorption may differ, a correlation exists between them.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/698/A145 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025A&A...698A.145B ui.adsabs.harvard.edu/abs/2025A%26A...698A.145B ↗
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/a145 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 71%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/698/a145 | 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 | |
| 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 |