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[Abridged] Active Galactic Nuclei (AGN) are thought to be responsible for the suppression of star formation in massive ~10$^{10}$ M$_\odot$ galaxies. While this process is a key feature in numerical simulations, it is not yet unambiguously…

We investigate the relationship between host galaxies' stellar content and active galactic nuclei (AGN) for optically selected QSOs with z$<$0.5. There are total 82 QSOs we select from Sloan Digital Sky Survey (SDSS) . These 82 QSOs both…

Astrophysics of Galaxies · Physics 2019-04-10 Jun-Jie Jin , Yi-Nan Zhu , Xian-Min Meng , Feng-Jie Lei , Hong Wu

We present a study of the infrared properties of X-ray selected, moderate luminosity (Lx=10^{42}-10^{44}ergs/s) active galactic nuclei (AGNs) up to z~3, to explore the links between star formation in galaxies and accretion onto their…

We present a study of the connection between black hole accretion, star formation, and galaxy morphology at z<=2.5. We focus on active galactic nuclei (AGNs) selected by their mid-IR power-law emission. By fitting optical to far-IR…

Using artificial neural network (ANN) predictions of total infra-red luminosities (LIR), we compare the host galaxy star formation rates (SFRs) of ~21,000 optically selected active galactic nuclei (AGN), 466 low excitation radio galaxies…

Astrophysics of Galaxies · Physics 2016-03-09 Sara L. Ellison , Hossen Teimoorinia , David J. Rosario , J. Trevor Mendel

The co-evolution of host galaxies and the active black holes which reside in their centre is one of the most important topics in modern observational cosmology. Here we present a study of the properties of obscured Active Galactic Nuclei…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 M. Brusa , F. Fiore , P. Santini , A. Grazian , A. Comastri , G. Zamorani , G. Hasinger , A. Merloni , F. Civano , A. Fontana , V. Mainieri

It has long been known that galaxy interactions are associated with enhanced star formation. In a companion paper, we explored this connection by applying a variety of statistics to SDSS data. In particular, we showed that specific star…

Astrophysics · Physics 2009-11-13 Cheng Li , Guinevere Kauffmann , Timothy M. Heckman , Simon D. M. White , Y. P. Jing

We investigate active galactic nuclei (AGN) candidates within the FourStar Galaxy Evolution Survey (ZFOURGE) to determine the impact they have on star-formation in their host galaxies. We first identify a population of radio, X-ray, and…

The interplay between star formation and supermassive black-hole growth is central to galaxy evolution, but how host-galaxy morphology regulates star-formation enhancement and AGN triggering across the star-forming main sequence remains…

Astrophysics of Galaxies · Physics 2026-05-29 G. Mountrichas , F. J. Carrera , V. A. Masoura , S. Mateos , M. Siudek , A. Corral

Active galactic nucleus (AGN) feedback is expected to impact the amount of cold gas in galaxies by driving strong galactic winds, by preventing external gas inflows, or by changing the thermodynamical state of the gas. We use molecular gas…

Astrophysics of Galaxies · Physics 2020-09-30 Hassen M. Yesuf , Luis C. Ho

We report new Herschel observations of 25 z=4.8 extremely luminous optically selected active galactic nuclei (AGNs). Five of the sources have extremely large star forming (SF) luminosities, L_SF, corresponding to SF rates (SFRs) of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Rivay Mor , Hagai Netzer , Benny Trakhtenbrot , Ohad Shemmer , Paulina Lira

We study the properties of 975 active galactic nuclei (AGN) selected by variability in the Pan-STARRS1 Medium-Deep Survey. Using complementary multi wavelength data from the ultraviolet to the far-infrared, we use SED fitting to determine…

Astrophysics of Galaxies · Physics 2016-07-27 S. Heinis , S. Gezari , S. Kumar , W. S. Burgett , H. Flewelling , M. E. Huber , N. Kaiser , R. J. Wainscoat , C. Waters

The large-scale environments of active galactic nuclei (AGN) reveal important information on the growth and evolution of supermassive black holes (SMBHs). Previous AGN clustering measurements using 2-point correlation functions have hinted…

Astrophysics of Galaxies · Physics 2025-09-03 A. Mhatre , M. C. Powell , S. Yuan , S. W. Allen , T. Caglar , M. Koss , I. del Moral-Castro , K. Oh , A. Peca , C. Ricci , F. Ricci , A. Rojas , M. Signorini

The extent of black hole growth during different galaxy evolution phases and the connection between galaxy compactness and AGN activity remain poorly understood. We use Hubble Space Telescope imaging of the CANDELS fields to identify…

Astrophysics of Galaxies · Physics 2022-08-17 James Aird , Alison L. Coil , Dale D. Kocevski

The disks of Active Galactic Nuclei (AGNs) are expected to be populated by numerous stars, either formed in the outer regions of the disk via gravitational instability, or captured from the nearby nuclear star cluster. Regardless of their…

Astrophysics of Galaxies · Physics 2025-03-07 Gaia Fabj , Alexander J. Dittmann , Matteo Cantiello , Rosalba Perna , Johan Samsing

Feedback from active galactic nuclei (AGN) is widely considered to be the main driver in regulating the growth of massive galaxies through heating or driving gas out of the galaxy, preventing further increase in stellar mass. Observational…

Astrophysics of Galaxies · Physics 2016-08-03 Dominika Wylezalek , Nadia L. Zakamska

Observations at low redshift have begun to tease out the star formation rate in active galaxies (AGN), which marks the beginning of the black hole-star formation connection over cosmic time. Star formation appears to depend on AGN type,…

High Energy Astrophysical Phenomena · Physics 2021-11-03 Chandra B. Singh , Nelitha Kulasiri , Max North , David Garofalo

Close encounters between galaxies are expected to be a viable mechanism, as predicted by numerical simulations, by which accretion onto supermassive black holes can be initiated. To test this scenario, we construct a sample of 562 galaxies…

We investigate the far-infrared (far-IR) incidence of X-ray-selected active galactic nuclei (AGN) and non-AGN galaxies as a function of stellar mass (M$_*$), star formation rate (SFR), and specific black hole accretion rate…

Astrophysics of Galaxies · Physics 2025-08-27 G. Mountrichas , F. J. Carrera , I. Georgantopoulos , S. Mateos , A. Ruiz , A. Corral