Results 31 to 40 of about 135,648 (235)

Somewhere in between: Tracing the Radio Emission from Galaxy Groups (or Why Does the Future of Observing Galaxy Groups with Radio Telescopes Look Promising?)

Galaxies, 2021
Galaxy groups constitute the most common class of galaxy systems in the known Universe, unique in terms of environmental properties. However, despite recent advances in optical and infrared observations as well as in theoretical research, little is known
Błażej Nikiel-Wroczyński
doaj   +1 more source

A search for clusters at high redshift - III. Candidate H-alpha emitters and EROs in the PKS 1138-262 proto-cluster at z=2.16 [PDF]

, 2004
In this paper we present deep VLT multi wavelength imaging observations of the field around the radio galaxy PKS 1138-262 aimed at detecting and studying a (potential) proto-cluster centered at this radio source.
Abell, Bahcall, Bahcall, Beers, Bertin, Best, Bower, Bruzual, Buat, Bunker, Butcher, Carilli, Carilli, Cowie, Cowie, Daddi, Daddi, De Breuck, De Breuck, De Propris, Dey, Donahue, Dressler, Eggen, Eke, Elston, Elston, Feigelson, Fynbo, Fynbo, Fynbo, Gladders, Glazebrook, Hamuy, Hamuy, Hill, Hoeg, Hu, Iglesias-Páramo, Infante, Ivison, Jarvis, Kauffmann, Kauffmann, Kennicutt, Kennicutt, Kennicutt, Kron, Kurk, Kurk, Lacy, Lacy, Leitherer, Madau, McLure, Moorwood, Møller, Nakata, Oke, Ouchi, Pentericci, Pentericci, Pentericci, Pentericci, Pentericci, Pozzetti, Prentice, Refregier, Rhoads, Rhoads, Rosati, Rosati, Röttgering, Salpeter, Schlegel, Scodeggio, Small, Stanford, Stanford, Stanford, Steidel, Steidel, Stiavelli, Taylor, van Breugel, van der Werf, van Dokkum, van Dokkum, van Dokkum, Venemans, Yates   +90 more
core   +4 more sources

NNMT Orchestrates Metabolic‐Epigenetic Reprogramming to Drive Macrophage‐Myofibroblast Transition in Hypertrophic Scarring

Advanced Science, EarlyView.
In macrophage‐myofibroblast transition, upregulated NNMT depletes S‐Adenosylmethionine‌ (SAM) and nicotinamide adenine dinucleotide(NAD+), thereby triggering epigenetic reprogramming via Histone H3 Lysine 27 acetylation (H3K27ac) accumulation at the promoter region of master transcription factor Prrx1.
Xiwen Dong, Weinan Guo, Yuxuan Qian, Wenyan Jin, Xiaozhen Li, Jingyuan Yang, Qingrong Ni, Shuang Wu, Fanni Li, Hua Wang, Chunying Li, Hong Cai   +11 more
wiley   +1 more source

Powerful Radio-loud Quasars Are Triggered by Galaxy Mergers in the Cosmic Bright Ages

The Astrophysical Journal
While supermassive black holes are ubiquitous features of galactic nuclei, only a small minority are observed during episodes of luminous accretion. The physical mechanism(s) driving the onset of fueling and ignition in these active galactic nuclei (AGN)
Peter Breiding, Marco Chiaberge, Erini Lambrides, Eileen T. Meyer, S. P. Willner, Bryan Hilbert, Martin Haas, George Miley, Eric S. Perlman, Peter Barthel, Christopher P. O’Dea, Alessandro Capetti, Belinda Wilkes, Stefi A. Baum, Duccio F. Macchetto, William Sparks, Grant Tremblay, Colin Norman   +17 more
doaj   +1 more source

AGN Feedback Signatures in UV Emission

Galaxies
Supermassive black holes (SMBH) are believed to influence galaxy evolution through AGN (active galactic nuclei) feedback. Galaxy mergers are key processes of galaxy formation that lead to AGN activity and star formation.
K. Rubinur
doaj   +1 more source

The environment of active objects in the nearby universe

, 2002
We study the galaxy environment of active galaxies, radio-loud and radio-quiet quasars in the redshift range $0.1\leq z\leq0.25$. We use APM galaxies in order to explore the local galaxy overdensity and the $b_J-R$ colour distribution of neighbouring ...
Abell, Babul, Barrow, Baugh, Best, Diego G. Lambas, Dressler, Ebeling, Fisher, Georgina V. Coldwell, Héctor J. Martínez, Lilje, Martínez, McLure, Rees, Schechter, Silk, Smith, Toomre, Voit, Véron-Cetty, Wold, Wold, Yee, Yee   +24 more
core   +2 more sources

LOFAR discovery of a 700-kpc remnant radio galaxy at low redshift [PDF]

, 2015
Remnant radio galaxies represent the final dying phase of radio galaxy evolution, in which the jets are no longer active. Due to their rarity in flux limited samples and the difficulty of identification, this dying phase remains poorly understood and the
Best, P. N., Brienza, M., Brüggen, M., Godfrey, L., Harwood, J. J., Jamrozy, M., Jarvis, M. J., Maddox, N., Mahony, E. K., McKean, J., Morganti, R., Murgia, M., Orru, E., Röttgering, H. J. A., Shulevski, A., Vilchez, N.   +15 more
core   +7 more sources

A Degradable Bioinspired Flier with Aerogel‐Based Colorimetric Sensors for Environmental Monitoring

Advanced Science, EarlyView.
Biodegradable fliers are developed inspired by Tipuana tipu samaras, integrating cellulose nanocrystal aerogel (CNCa) sensors loaded with natural dyes for pH and ammonia detection. The lightweight, degradable fliers mimic natural morphology and aerodynamics, offering an eco‐friendly, scalable solution for in situ environmental monitoring after passive ...
Gianpaolo Gallo, Ruowen Tu, Carlo Filippeschi, Stefano Mariani, Barbara Mazzolai   +4 more
wiley   +1 more source

Formation of a Massive Lenticular Galaxy Under the Tidal Interaction with a Group of Dwarf Galaxies

The Astrophysical Journal Letters, 2023
Based on the atomic-hydrogen (H i ) observations using the Five-hundred-meter Aperture Spherical radio Telescope, we present a detailed study of the gas-rich massive S0 galaxy NGC 1023 in a nearby galaxy group.
Jin-Long Xu, Ming Zhu, Kelley M. Hess, Naiping Yu, Chuan-Peng Zhang, Xiao-Lan Liu, Mei Ai, Peng Jiang, Jie Wang   +8 more
doaj   +1 more source

Discovery of Rare Dying Radio Galaxies Using MeerKAT

Galaxies, 2021
Dying radio galaxies represent a stage of the evolution of active galactic nuclei (AGN), during which the accreting central black hole has switched off and/or falls to such a low level that the plasma outflow can no longer be sustained. When this happens,
Nadeem Oozeer, Lawrence Rudnick, Michael F. Bietenholz, Tiziana Venturi, Kenda Knowles, Konstantinos Kolokythas, Nceba Mhlahlo   +6 more
doaj   +1 more source