Results 71 to 80 of about 77,751 (271)

The nature of obscuration in AGN: II. insights from clustering properties

, 2014
Based on large optical and mid-infrared (IR) surveys, we investigate the relation between nuclear activity in local Seyfert 2 galaxies and galaxy interactions using a statistical neighbour counting technique.
Kauffmann, Guinevere, Li, Cheng, Shao, Li, Wang, Jing   +3 more
core   +1 more source

GOALS-JWST: Gas Dynamics and Excitation in NGC 7469 Revealed by NIRSpec

The Astrophysical Journal
We present new JWST NIRSpec integral field spectroscopy (IFS) data for the luminous infrared galaxy NGC 7469, a nearby (70.6 Mpc) active galaxy with a Seyfert 1.5 nucleus that drives a highly ionized gas outflow and a prominent nuclear star-forming ring.
Marina Bianchin, Vivian U, Yiqing Song, Thomas S.-Y. Lai, Raymond P. Remigio, Loreto Barcos-Muñoz, Tanio Díaz-Santos, Lee Armus, Hanae Inami, Kirsten L. Larson, Aaron S. Evans, Torsten Böker, Justin A. Kader, Sean T. Linden, Vassilis Charmandaris, Matthew A. Malkan, Jeff Rich, Thomas Bohn, Anne M. Medling, Sabrina Stierwalt, Joseph M. Mazzarella, David R. Law, George C. Privon, Susanne Aalto, Philip Appleton, Michael J. I. Brown, Victorine A. Buiten, Luke Finnerty, Christopher C. Hayward, Justin Howell, Kazushi Iwasawa, Francisca Kemper, Jason Marshall, Jed McKinney, Francisco Müller-Sánchez, Eric J. Murphy, Paul P. van der Werf, David B. Sanders, Jason Surace   +38 more
doaj   +1 more source

Nonthermal Nuclei in 374 UGC Galaxies [PDF]

International Astronomical Union Colloquium, 1998
AbstractThe VLA was used at 1.5-2 arcsec resolution at 20cm to search for compact continuum sources in the inner regions of 374 UGC galaxies.
J. M. Wrobel, J. J. Condon, J. Machalski
openaire   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Programming Next‐Generation Synthetic Biosensors by Genetic Circuit Design

Advanced Science, Volume 13, Issue 14, 9 March 2026.
Synthetic biology enables genetic circuit‐based biosensing to detect diverse targets, process signals, and transduce them into readable outputs or intracellular regulatory activities. However, field deployment and real‐world application of such synthetic biosensors face considerable challenges in sensitivity, specificity, speed, stability, and ...
Yuanli Gao, Cheng Huang, Jiaxuan Deng, Lei Wang, Baojun Wang   +4 more
wiley   +1 more source

Galactic abundances as a relic neutrino detection scheme

, 2011
We propose to use the threshold-free process of neutrino capture on beta-decaying nuclei (NCB) using all available candidate nuclei in the Milky Way as target material in order to detect the presence of the Cosmic neutrino background. By integrating over
Hannestad, Steen, Riis, Anna Sejersen, Zinner, Nikolaj Thomas   +2 more
core   +1 more source

The ∞ Galaxy: A Candidate Direct-collapse Supermassive Black Hole between Two Massive, Ringed Nuclei

The Astrophysical Journal Letters
We report the discovery of an unusual z = 1.14 object, dubbed the ∞ galaxy, in JWST imaging of the COSMOS field. Its rest-frame near-IR light is dominated by two compact nuclei with stellar masses of ∼10 ^11 M _⊙ and a projected separation of 10 kpc ...
Pieter van Dokkum, Gabriel Brammer, Josephine F. W. Baggen, Michael A. Keim, Priyamvada Natarajan, Imad Pasha   +5 more
doaj   +1 more source

Tidal Perturbation and Active Galaxy Nuclei [PDF]

International Astronomical Union Colloquium, 2000
AbstractTheories of nuclear activity mechanisms in disk galaxies (such as Seyfert galaxies) range from intrinsic (e.g. bars) to external (tidal perturbation by passing companions). The Byrd et al. (1986, 1987) simulation survey determined the tidal perturbation necessary to induce nuclear activity.
Gene Byrd, Mauri Valtonen
openaire   +1 more source

The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°$$ {6}^{{}^{\circ}} $$‐wide stripe in the southern Galactic disk with simultaneous observations in r′$$ {r}^{\prime } $$ and i′$$ {i}^{\prime } $$ (7m≲r′,i′≲18m$$ {7}^{\mathrm{m}}\lesssim {r}^{\prime },{i}^{\prime}\lesssim {18}^{\mathrm{m}} $$) from September ...
Julia Blex, Moritz Hackstein, Christian Westhues, Michael Ramolla, Markus Demleitner, Dominik J. Bomans, Kerstin Weis, Christofer Fein, Rolf Chini   +8 more
wiley   +1 more source

The ACS Fornax Cluster Survey. VI. The Nuclei of Early-Type Galaxies in the Fornax Cluster

, 2012
The Advanced Camera for Surveys (ACS) Fornax Cluster Survey is a Hubble Space Telescope program to image 43 early-type galaxies in the Fornax cluster, using the F475W and F850LP bandpasses of the ACS.
Agarwal, Anderson, Andrés Jordán, Antonini, Babul, Bailey, Bailin, Balcells, Bandara, Barth, Bekki, Bekki, Bekki, Bell, Bellazzini, Bender, Binney, Blakeslee, Bower, Brasseur, Butler, Böker, Capuzzo-Dolcetta, Carollo, Chen, Ciotti, Coleman, Coleman, Coleman, Combes, Côté, Côté, Côté, Côté, Côté, Davies, Devecchi, Eliche-Moral, Emsellem, Eric W. Peng, Ferrarese, Ferrarese, Ferrarese, Filippenko, Fukazawa, Gallo, Gebhardt, Gebhardt, Glass, González Delgado, Graham, Graham, Graham, Graham, Gültekin, Harris, Hopkins, Hopkins, Häring, Jedrzejewski, Jerjen, Jerjen, John P. Blakeslee, Jordán, Jordán, Jordán, Jordán, Kazantzidis, King, King, Kleyna, Kormendy, Kundu, Larsen, Lauer, Laura Ferrarese, Layden, Li, Lisker, Lisker, Lisker, Liu, Lotz, Lotz, Magorrian, Marconi, Martin, Masters, Matthews, McLaughlin, McLaughlin, Mei, Michael J. West, Michie, Michielsen, Mieske, Milosavljević, Milosavljević, Monica L. Turner, Murray, Nieto, Nulsen, Oh, Palma, Paolillo, Patrick Côté, Peng, Peng, Peng, Peng, Ravindranath, Rest, Robertson, Rossa, Schlegel, Sersic, Seth, Seth, Seth, Seth, Siegel, Silk, Simona Mei, Strader, Tonry, Trager, Villegas, Walcher, Walcher, Walker, Wehner, White, York   +132 more
core   +2 more sources