Results 21 to 30 of about 874 (181)

Morphology, Stellar Kinematics and Dynamics of Barred Galaxies [PDF]

Symposium - International Astronomical Union, 1983
A brief review is given of the morphology of barred galaxies, following Kormendy (1981, 1982). The features illustrated include bulges, bars, disks, lenses, and inner and outer rings.Most of the paper is devoted to a detailed discussion of the absorption-line velocity field of the prototypical SBO galaxy NGC 936.
openaire   +1 more source

Kinematics, substructure and luminosity-weighted dynamics of six nearby galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
15 pages, 5 figures. Accepted for publication in MNRAS.
Firth, P., Evstigneeva, E. A., Jones, J. B., Drinkwater, M. J., Phillipps, S., Gregg, M. D.   +5 more
openaire   +4 more sources

Extreme kinematic misalignment in IllustrisTNG galaxies: the origin, structure, and internal dynamics of galaxies with a large-scale counterrotation [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We provide an in-deep analysis of 25 galaxies with substantial counterrotation from IllustrisTNG100 simulations in the stellar mass range 2×109−3×1010 M⊙. The counterrotation is a result of an external gas infall ≈2–8 Gyr ago.
Sergey Khoperskov, Igor Zinchenko, Branislav Avramov, Sergey Khrapov, Peter Berczik, Anna Saburova, Marina Ishchenko, Alexander Khoperskov, Claudia Pulsoni, Yulia Venichenko, Dmitry Bizyaev, Alexei Moiseev   +11 more
openaire   +4 more sources

Kinematics of simulated galaxies – I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
State-of-the-art integral field surveys like $\mathrm{ATLAS^{3D}}$, SLUGGS, CALIFA, SAMI, and MaNGA provide large data sets of kinematical observations of early-type galaxies (ETGs), yielding constraints on the formation of ETGs. Using the cosmological hydrodynamical \textit{Magneticum Pathfinder} simulations, we investigate the paradigm of fast and ...
Schulze, Felix, Remus, Rhea-Silvia, Dolag, Klaus, Burkert, Andreas, Emsellem, Eric, van de Ven, Glenn   +5 more
openaire   +6 more sources

The kinematics and dynamics of the rich cluster of galaxies Abell 539

The Astronomical Journal, 1988
A sample of 289 redshifts within 10 deg of the center of the cluster A539 have been obtained in order to investigate the cluster kinematics and dynamics. Within 1 Mpc of the center, the physical parameters of A539 are found to be typical of those of rich clusters.
Eve C. Ostriker, John P. Huchra, Margaret J. Geller, Michael J. Kurtz   +3 more
openaire   +1 more source

Kinematic and Dynamics of the Galaxy ESO 358-60

The Astrophysical Journal
Abstract We investigate the velocity field derived from H I measurements of the irregular galaxy ESO 358-60 using the velocity ring model (VRM) method. This technique, which assumes a coplanar disk, allows us to reconstruct coarse-grained maps of both radial and tangential ...
Francesco Sylos Labini, Matteo Straccamore   +1 more
openaire   +2 more sources

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

Experimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo, Christina Lysandrou, Laura Sudres, Alfonso Gil‐Martinez, Jaap Swanenburg, James Edward Clark, David Andrew Green   +6 more
wiley   +1 more source

Stäackel-type Dynamic Model of the Galaxy Based on Maser Kinematic Data

Open Astronomy, 2016
Abstract A dynamic model of the Galaxy is constructed based on kinematic data for masers with trigonometric parallaxes. Maser data is used to compute the model potential in the Galactic plane. The potential is then generalized to three dimensions assuming the existence of a third quadratic integral of motion. The resulting Galactic model
Gromov A. O., Nikiforov I. I., Ossipkov L. P.   +2 more
openaire   +3 more sources

High-redshift quasars and their host galaxies – I. Kinematical and dynamical properties and their tracers [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT Observations of high-redshift quasars provide information on the massive black holes (MBHs) powering them and the galaxies hosting them. Current observations of z ≳ 6 hosts, at sub-millimetre wavelengths, trace the properties of cold gas, and these are used to compare with the correlations between MBHs and galaxies ...
Lupi, Alessandro, Volonteri, Marta, Decarli, Roberto, Bovino, Stefano, Silk, Joseph, Bergeron, Jacqueline   +5 more
openaire   +3 more sources

A Dialogue on Revolutions and Revolutionaries in Science: A Perspective From Quantum Mechanics

Natural Sciences, Volume 6, Issue 3, July 2026.
ABSTRACT We discuss the notions of scientific revolutions and revolutionaries in the context of the Relativity Revolution and of the First, Second, and Third Quantum Revolutions. We conclude that at the core of the question of what qualifies as a revolution and revolutionary is an assessment of the gradients of knowledge accumulation over time, both at
Ron Folman, Bretislav Friedrich
wiley   +1 more source