Results 131 to 140 of about 31,838 (235)

Investigating the Star Formation Characteristics of Radio Active Galactic Nuclei

The Astrophysical Journal
The coevolution of supermassive black holes and their host galaxies represents a fundamental question in astrophysics. One approach to investigating this question involves comparing the star formation rates (SFRs) of active galactic nuclei (AGNs) with ...
Bojun Zhang, Fan Zou, W. N. Brandt, Shifu Zhu, Nathan Cristello, Qingling Ni, Yongquan Xue, Zhibo Yu   +7 more
doaj   +1 more source

Environments of high and low excitation radio galaxies

Astronomy & Astrophysics
Aims. Active galactic nuclei (AGNs) play a crucial role in shaping galaxy evolution through their feedback mechanisms. Low-excitation radio galaxies (LERGs) and high-excitation radio galaxies (HERGs) are thought to exhibit distinct feedback modes, and ...
Lopez C., Ponce D., Donoso E.
doaj   +1 more source

The Role of Active Galactic Nucleus Winds in Galaxy Formation: Connecting AGN Outflows at Low Redshifts to the Formation/Evolution of Their Host Galaxies

The Astronomical Journal
Using Sloan Digital Sky Survey (SDSS) spectra, we applied an automatic method to search for outflows (OFs) in three large samples of narrow-line active galactic nuclei (AGN) at low redshifts ( z < 0.4), separated into three spectral activity classes ...
Juan Pablo Torres-Papaqui, Roger Coziol, Aitor C. Robleto-Orús, Karla A. Cutiva-Alvarez, Paulina Roco-Avilez   +4 more
doaj   +1 more source

Structural decomposition of merger-free galaxies hosting luminous AGNs

Monthly Notices of the Royal Astronomical Society
ABSTRACT Active galactic nucleus (AGN) growth in disc-dominated, merger-free galaxies is poorly understood, largely due to the difficulty in disentangling the AGN emission from that of the host galaxy. By carefully separating this emission, we examine the differences between AGNs in galaxies hosting a (possibly) merger-grown, classical ...
Fahey, MJ, Garland, IL, Simmons, BD, Keel, WC, Shanahan, J, Coil, A, Glikman, E, Lintott, CJ, Masters, KL, Moran, E, Smethurst, RJ, Géron, T, Thorne, MR   +12 more
openaire   +5 more sources

The Intrinsic Sizes of Odd Radio Circles

The Astrophysical Journal
A new class of sources, the so-called odd radio circles (ORCs), have been discovered by recent sensitive, large-area radio continuum surveys. The distances of these sources have so far relied on photometric redshifts of optical galaxies found at the ...
David S. N. Rupke, Alison L. Coil, Kelly E. Whalen, John Moustakas, Christy A. Tremonti, Serena Perrotta   +5 more
doaj   +1 more source

Structures of Dusty and AGN Host Galaxies

, 2019
I will present a study of connection between star formation, active galactic nucleus (AGN), and galaxy morphology. By fitting optical to far-IR photometry with state-of-the-art spectral energy distribution (SED) techniques, we derive stellar masses, star formation rates, dust properties, and AGN contribution in galaxies over the whole COSMOS field. Our
openaire   +1 more source

A New Sample of Dwarf Galaxies with X-Ray-selected Active Galactic Nucleus Candidates from the eROSITA All-Sky Survey

The Astrophysical Journal
To investigate the population of massive black holes in dwarf galaxies, we conduct a systematic search for active galactic nuclei (AGNs) using data from the first data release of the eROSITA All-Sky Survey (eRASS). We crossmatch dwarf galaxy positions in
John-Michael Eberhard, Amy E. Reines
doaj   +1 more source

Host galaxies of luminousz ∼ 0.6 quasars: major mergers are not prevalent at the highest AGN luminosities [PDF]

, 2016
C. Villforth, Timothy S. Hamilton, M. M. Pawlik, T. Hewlett, Kate Rowlands, H. Herbst, Francesco Shankar, A. Fontana, Fred Hamann, Anton M. Koekemoer, J. Pforr, Jonathan R. Trump, Stijn Wuyts   +12 more
openalex   +1 more source

First Light and Reionization Epoch Simulations (FLARES) -- XV: The physical properties of super-massive black holes and their impact on galaxies in the early universe

The Open Journal of Astrophysics
Understanding the co-evolution of super-massive black holes (SMBHs) and their host galaxies remains a key challenge of extragalactic astrophysics, particularly the earliest stages at high-redshift.
Stephen Wilkins, Jussi K. Kuusisto, Dimitrios Irodotou, Shihong Liao, Christopher C. Lovell, Sonja Soininen, Sabrina C. Berger, Sophie L. Newman, William J. Roper, Louise T. C. Seeyave, Peter A. Thomas, Aswin P. Vijayan   +11 more
doaj   +1 more source

UVIT Survey of AGN host Galaxies -- I: Star Formation Scenarios [PDF]

Payel Nandi, C. S. Stalin, Poulomi Dam, D. J. Saikia   +3 more
openalex   +1 more source