AGN's Deadness Over Cosmic Time: UVJ Diagrams of X-Ray AGN
Abstract
Over cosmic time, galaxies tend to separate into a bimodal distribution of "red and dead" or blue and star-forming. We examine whether active galaxies evolve in a similar way, and whether this reveals anything about the complexities of the relationship between an AGN and the host galaxy. We use the Stripe82X survey to identify 3940 X-ray AGN spanning z = 0-2.5, and we measure the rest-frame UVJ colors of each galaxy. We classify AGN as star-forming or quiescent based on their location in a UVJ color diagram. We find that there is not a clear bimodal distribution between AGN in star-forming and quiescent galaxies. Furthermore, the most luminous X-ray sources tend to lie in the star-forming region, which may indicate a correlation between central engine activity and increased rates of star formation.
- Publication:
-
Research Notes of the American Astronomical Society
- Pub Date:
- August 2023
- DOI:
- 10.3847/2515-5172/acec6b
- arXiv:
- arXiv:2307.11612
- Bibcode:
- 2023RNAAS...7..165C
- Keywords:
-
- AGN host galaxies;
- Active galaxies;
- Galaxy colors;
- Star formation;
- Galaxy evolution;
- Galaxy quenching;
- Quenched galaxies;
- Galaxies;
- 2017;
- 17;
- 586;
- 1569;
- 594;
- 2040;
- 2016;
- 573;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 4 pages, 1 figure