Table · dataset · 2025
MaNGA-DR15 type-1&2 AGN catalogs
Listed in IVOA Registry (Virtual Observatory)
We present a method to identify type-1 active galactic nuclei (AGNs) in the central 3 arcsec integrated spectra of galaxies in the MaNGA DR15 sample.
Description
It is based on flux ratios estimates in spectral bands flanking the expected H {alpha} broad component H {alpha}_BC_. The high signal-to-noise ratio obtained (mean S/N = 84) permits the identification of H {alpha}_BC_ without prior subtraction of the host galaxy (HG) stellar component.
A final sample of 47 type-1 AGN is reported out of 4700 galaxies at z < 0.15. The results were compared with those from other methods based on the SDSS DR7 and MaNGA data. Detection of type-1 AGN in those works compared to our method goes from 26 per cent to 81 per cent.
Read the rest (2 more)
Spectral indexes were used to classify the type-1 AGN spectra according to different levels of AGN-HG contribution, finding 9 AGN-dominated, 14 intermediate, and 24 HG-dominated objects. Complementary data in NIR-MIR allowed us to identify type I AGN-dominated objects as blue and HG-dominated as red in the WISE colours. From NVSS and FIRST radio continuum data, we identify 5 HERGs (high-excitation radio galaxies) and 4 LERGs (low-excitation radio galaxies), three showing evidence of radio-jets in the FIRST maps.
Additional X-ray data from ROSAT allowed us to build [O III] and H {alpha}_BC_ versus X-ray, NIR-MIR, and radio continuum diagrams, showing that L(H {alpha}_BC_) and L([O III]) provide good correlations. The range in H {alpha}_BC_ luminosity is wide 38 < logL(H {alpha}_BC_) < 44, with logFWHM(H {alpha}_BC_) ~ 3-4, covering a range of Eddington ratios of -5.15 < log L_bol_ / L_Edd_ < 0.70. Finally, we also identify and report ten possible changing-look AGN candidates.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/514/3626 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022MNRAS.514.3626C ui.adsabs.harvard.edu/abs/2022MNRAS.514.3626C ↗
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/mnras/514/3626 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 74%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/mnras/514/3626 | 10 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:optical | 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 |