| Title: |
Active galactic nuclei in diverse galactic environments |
| Authors: |
Patel, Divya; Robertson, Clayton; Holwerda, Benne; Pimbblet, Kevin; Kirkpatrick, Allison; De Propris, Roberto; Liske, Jochen |
| Publisher Information: |
Cambridge University Press |
| Publication Year: |
2026 |
| Collection: |
University of Hull: Repository@Hull |
| Subject Terms: |
AGN; galaxy evolution; BPT diagram; large-scale structures |
| Description: |
We examine how the presence of active galactic nuclei (AGN) correlates with location in large-scale cosmic structures using the Galaxy and Mass Assembly (GAMA) survey across the G09, G12, and G15 fields. Our sample contains 18 927, 9 273, and 1 148 galaxies for highly dense filaments, moderately dense tendrils, and highly underdense voids, respectively. AGN are identified among emission-line galaxies using Baldwin-Phillips-Terlevich (BPT) diagnostic diagrams based on [NII], [SII], and [OI]. We compare AGN fractions across filament, tendril, and void regions and as a function of distance from the nearest filament centreline. Our results reveal a mild excess in filaments compared to voids when using [SII]- and [NII]-based classifications, while no significant environmental dependence is found for [OI]-based classifications. Overall, we find a weak environmental trend with AGN activity, which suggests that the local environment does not always dominate AGN activity; instead, secular processes are likely to be at play. Our findings are consistent with previous studies reporting only marginal preferences for overdense environments for AGN. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
https://hull-repository.worktribe.com/output/5564642; Publications of the Astronomical Society of Australia; Volume 43 |
| DOI: |
10.1017/pasa.2026.10153 |
| Availability: |
https://hull-repository.worktribe.com/file/5564642/1/Published%20Article; https://hull-repository.worktribe.com/output/5564642; https://doi.org/10.1017/pasa.2026.10153 |
| Rights: |
openAccess ; http://creativecommons.org/licenses/by/4.0 |
| Accession Number: |
edsbas.3BC4C0BF |
| Database: |
BASE |