AMIGA project: Active galaxies in a complete sample of isolated galaxies
J. Sabater, S. Leon, L. Verdes-Montenegro, U. Lisenfeld, J. Sulentic,, S. Verley

TL;DR
The AMIGA project studies isolated galaxies to understand how environment influences galaxy properties and nuclear activity, revealing lower AGN fractions compared to denser regions and emphasizing environment’s role in triggering activity.
Contribution
This work provides a comprehensive, publicly accessible dataset of isolated galaxies and analyzes nuclear activity, highlighting the environment's impact on galaxy evolution and AGN occurrence.
Findings
7-20% of FIR-selected galaxies are AGN candidates.
No radio-excess galaxies above a factor of 5 radio excess.
22% of galaxies show optical AGN signatures.
Abstract
The project AMIGA (Analysis of the interstellar Medium of Isolated GAlaxies) provides a statistically significant sample of the most isolated galaxies in the northern sky. Such a control sample is necessary to understand the role of the environment in evolution and galaxy properties like the interstellar medium (ISM), star formation and nuclear activity. The data is publicly released under a VO interface at http://amiga.iaa.es/. One of our main goals is the study of nuclear activity in non-interacting galaxies using different methods. We focus on the well known radiocontinuum-far infrared (FIR) correlation in order to findradio-excess galaxies which are candidates to host an active galactic nucleus (AGN) and FIR colours to find obscured AGN candidates. We looked for the existing information on nuclear activity in the V\'eron-Cetty catalogue and in the NASA Extragalactic Database (NED).…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
