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We investigate the stellar kinematics and stellar populations of 58 radio-loud galaxies of intermediate luminosities (L$_{3 GHz}$ $>$ 10$^{23}$ W Hz$^{-1}$ ) at 0.6 < z < 1. This sample is constructed by cross-matching galaxies from the…

Supermassive black holes (SMBHs) are known to correlate with many properties of their host galaxies, but we do not fully understand these correlations. The strengths (tightness) of these correlations have also been widely debated. In this…

Astrophysics of Galaxies · Physics 2025-10-24 Jacob Reinheimer , Yuan Li , Trung Ha , Melanie Habouzit , Brandon M. Matthews , George Blaney

We present a catalogue of local ($z<0.1$) galaxies that contain faint AGN. We select these objects by identifying galaxies that exhibit a significant excess in their radio luminosities, compared to what is expected from the observed levels…

Astrophysics of Galaxies · Physics 2018-06-06 E. K. Lofthouse , S. Kaviraj , D. J. B. Smith , M. J. Hardcastle

[Abridged] We study the evolution of the radio spectral index and far-infrared/radio correlation (FRC) across the star-formation rate-stellar masse (i.e. SFR-M*) plane up to z 2. We start from a M*-selected sample of galaxies with reliable…

We make use of multi-wavelength data of a large hyperluminous infrared (HLIRG) sample to derive their main physical properties, e.g., stellar mass, star-formation rate (SFR), volume density, contribution to the cosmic stellar mass density…

Astrophysics of Galaxies · Physics 2021-10-20 F. Gao , L. Wang , A. Efstathiou , K. Małek , P. N. Best , M. Bonato , D. Farrah , R. Kondapally , I. McCheyne , H. J. A. Röttgering

In order to reproduce the high-mass end of the galaxy mass-distribution, some process must be responsible for the suppression of star-formation in the most massive of galaxies. Commonly Active Galactic Nuclei (AGN) are invoked to fulfil…

We combine a deep 0.5~deg$^2$, 1.4~GHz deep radio survey in the Lockman Hole with infrared and optical data in the same field, including the SERVS and UKIDSS near-infrared surveys, to make the largest study to date of the host galaxies of…

The inner $\sim$200 pc region of the Galaxy contains a 4 million M$_{\odot}$ supermassive black hole (SMBH), significant quantities of molecular gas, and star formation and cosmic ray energy densities that are roughly two orders of…

Astrophysics of Galaxies · Physics 2022-02-09 I. Heywood , I. Rammala , F. Camilo , W. D. Cotton , F. Yusef-Zadeh , T. D. Abbott , R. M. Adam , G. Adams , M. A. Aldera , K. M. B. Asad , E. F. Bauermeister , T. G. H. Bennett , H. L. Bester , W. A. Bode , D. H. Botha , A. G. Botha , L. R. S. Brederode , S. Buchner , J. P. Burger , T. Cheetham , D. I. L. de Villiers , M. A. Dikgale-Mahlakoana , L. J. du Toit , S. W. P. Esterhuyse , B. L. Fanaroff , S. February , D. J. Fourie , B. S. Frank , R. R. G. Gamatham , M. Geyer , S. Goedhart , M. Gouws , S. C. Gumede , M. J. Hlakola , A. Hokwana , S. W. Hoosen , J. M. G. Horrell , B. Hugo , A. I. Isaacson , G. I. G. Józsa , J. L. Jonas , A. F. Joubert , R. P. M. Julie , F. B. Kapp , J. S. Kenyon , P. P. A. Kotzé , N. Kriek , H. Kriel , V. K. Krishnan , R. Lehmensiek , D. Liebenberg , R. T. Lord , B. M. Lunsky , K. Madisa , L. G. Magnus , O. Mahgoub , A. Makhaba , S. Makhathini , J. A. Malan , J. R. Manley , S. J. Marais , A. Martens , T. Mauch , B. C. Merry , R. P. Millenaar , N. Mnyandu , O. J. Mokone , T. E. Monama , M. C. Mphego , W. S. New , B. Ngcebetsha , K. J. Ngoasheng , M. T. Ockards , N. Oozeer , A. J. Otto , S. S. Passmoor , A. A. Patel , A. Peens-Hough , S. J. Perkins , A. J. T. Ramaila , N. M. R. Ramanujam , Z. R. Ramudzuli , S. M. Ratcliffe , A. Robyntjies , S. Salie , N. Sambu , C. T. G. Schollar , L. C. Schwardt , R. L. Schwartz , M. Serylak , R. Siebrits , S. K. Sirothia , M. Slabber , O. M. Smirnov , L. Sofeya , B. Taljaard , C. Tasse , A. J. Tiplady , O. Toruvanda , S. N. Twum , T. J. van Balla , A. van der Byl , C. van der Merwe , V. Van Tonder , R. Van Wyk , A. J. Venter , M. Venter , B. H. Wallace , M. G. Welz , L. P. Williams , B. Xaia

Radio observations provide a powerful tool to constrain the assembly of galaxies over cosmic time. Recent deep and wide radio continuum surveys have improved significantly our understanding on radio emission properties of AGNs and SFGs…

Astrophysics of Galaxies · Physics 2025-02-19 Fangyou Gao , Tao Wang , Yijun Wang

Using deep observations across three of the LOFAR Two-metre Sky Survey Deep Fields, this work measures the angular clustering of star forming galaxies (SFGs) and low-excitation radio galaxies (LERGs) to $z$$\lesssim$1.5 for faint sources,…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-02 C. L. Hale , P. N. Best , K. J. Duncan , R. Kondapally , M. J. Jarvis , M. Magliocchetti , H. J. A. Röttgering , D. J. Schwarz , D. J. B. Smith , J. Zheng

Radio-mode feedback is a key ingredient in galaxy formation and evolution models, required to reproduce the observed properties of massive galaxies in the local Universe. We study the cosmic evolution of radio-AGN feedback out to $z\sim2.5$…

We investigate the intrinsic and observational properties of $z\gtrsim 6$ galaxies hosting coalescing massive black holes (MBHs) that gives rise to gravitational waves (GWs) detectable with the Laser Interferometer Space Antenna (LISA). We…

We examine the clustering properties of low-power radio galaxies at redshift 0.4<z<0.8, using data from the 2SLAQ Luminous Red Galaxy (LRG) survey. We find that radio-detected LRGs (with optical luminosities of 3-5L* and 1.4GHz radio powers…

Astrophysics · Physics 2009-11-13 David A. Wake , Scott M. Croom , Elaine M. Sadler , Helen M. Johnston

Over recent years there has been mounting evidence that accreting supermassive black holes in active galactic nuclei (AGN) and stellar mass black holes have similar observational signatures: thermal emission from the accretion disk, X-ray…

Galaxy bulge luminosity L, black hole mass (Mbh), and stellar velocity dispersion (sigma_*) increase together in a way suggesting a close evolutionary relationship. Measurements of the Mbh-sigma_* relationship as a function of cosmic time…

Astrophysics · Physics 2009-11-10 E. W. Bonning , G. A. Shields , S. Salviander , R. J. McLure

Observations of gravitational waves from binary black hole (BBH) mergers have measured the redshift evolution of the BBH merger rate. The number density of galaxies in the Universe evolves differently with redshift based on their physical…

High Energy Astrophysical Phenomena · Physics 2025-02-05 Aditya Vijaykumar , Maya Fishbach , Susmita Adhikari , Daniel E. Holz

We explore the multiwavelength properties of AGN host galaxies for different classes of radio-selected AGN out to z$\lesssim$6 via a multiwavelength analysis of about 7700 radio sources in the COSMOS field. The sources were selected with…

This is the first of a series of three papers exploring the connection between the multiwavelength properties of AGNs in nearby early-type galaxies and the characteristics of their hosts. We selected two samples, both with high resolution 5…

Astrophysics · Physics 2009-11-13 Alessandro Capetti , Barbara Balmaverde

Fast radio bursts (FRBs) are extragalactic radio transients that offer valuable insight of intergalactic medium (IGM). However, the dispersion measure (DM) contributed by IGM ($\rm{DM_{IGM}}$) is degenerated with that from the host galaxy…

Astrophysics of Galaxies · Physics 2025-07-03 Rui-Nan Li , Ke Xu , Dao-Hong Gao , Qin Wu , Shuang-Xi Yi , F. Y. Wang

We use the emission line measurements of 3CR radio sources with redshift < 0.3, to explore their spectroscopic properties. The 3CR sources show a bimodal distribution of Excitation Index, a new spectroscopic indicator that measures the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Sara Buttiglione , Alessandro Capetti , Annalisa Celotti , David J. Axon , Marco Chiaberge , F. Duccio Macchetto , William B. Sparks