Results 11 to 20 of about 23,148 (262)

Morphologies arising from the gas flow in the innermost kiloparsec of barred galaxy models

Astronomy & Astrophysics
Context. We study a series of response models to investigate the formation of specific morphological features in the central 1 kpc region of the gas component in barred spiral galaxies. Aims. We aim to understand how structures, such as nuclear rings and
Pastras S., Patsis P. A., Athanassoula E.   +2 more
doaj   +1 more source

Role of Gaseous Disk in the Formation of the Spiral Structure of the Milky Way Galaxy

Open Astronomy, 2016
We use observational gaseous and stellar density distributions in the disk of the Milky Way (MW) galaxy together with the disk rotation curve and measured disk velocity dispersion to build collisionless and combined collisionless-gaseous equilibrium ...
Korchagin V. I., Khoperskov S. A., Khoperskov A. V.   +2 more
doaj   +1 more source

Distinct gas and stellar circular velocity curves in the Milky Way

Astronomy & Astrophysics
Context. The rotational velocity of interstellar gas in the Milky Way has been taken to represent the circular velocity of a test particle in the Galaxy’s gravitational field, and hence an indicator of the Galaxy’s mass.
Nelson A. H., Sofue Y., Williams P. R.
doaj   +1 more source

Parameters of Six Selected Galactic Potential Models

Open Astronomy, 2017
This paper is devoted to the refinement of the parameters of the six three-component (bulge, disk, halo) axisymmetric Galactic gravitational potential models on the basis of modern data on circular velocities of Galactic objects located at distances up ...
Bajkova Anisa, Bobylev Vadim
doaj   +1 more source

Phase spirals induced by the gas warp

Astronomy & Astrophysics
Context. The discovery of the phase space-spirals in the Solar neighborhood in Gaia Data Release 2 has prompted various attempts to understand their origin. A source of bending waves that has been neglected as a cause of the phase spiral is irregular gas
Wang Shuyu, Brown Anthony G. A., Debattista Victor P., Khachaturyants Tigran   +3 more
doaj   +1 more source

Mass Distribution and Gravitational Potential of the Milky Way

Open Astronomy, 2017
Models of mass distribution in the Milky Way are discussed where those yielding the potential analytically are preferred. It is noted that there are three main contributors to the Milky Way potential: bulge, disc and dark halo.
Ninković Slobodan
doaj   +1 more source

Application of Airborne Infrared Remote Sensing to the Study of Ocean Submesoscale Eddies

Frontiers in Mechanical Engineering, 2018
This paper explores the use of infrared remote sensing methods to examine submesoscale eddies that recur downstream of a deep-water island (Santa Catalina, CA).
George O. Marmorino, Geoffrey B. Smith, Ryan P. North, Burkard Baschek   +3 more
doaj   +1 more source

Natural Frequencies of Levodopa‐Induced Dyskinesia in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Ioannis U. Isaias, Federica Avantaggiato, Gianni Pezzoli, Andrea Canessa   +3 more
wiley   +1 more source

On the application of a particular form of the gravitational potential [PDF]

Serbian Astronomical Journal, 2003
A formula, already existing in the literature, describing the gravitational potential of a spherically symmetric stellar system is analyzed. Some interesting cases of comparison with empirical formulae are presented. A good agreement is found.
Ninković Slobodan D.
doaj   +1 more source

Unsupervised Machine Learning Identifies Shared Biomechanical and Clinical Variation in Individuals with Knee Osteoarthritis and High BMI: A Secondary Analysis of the IDEA Trial

Arthritis Care &Research, Accepted Article.
Objective High body mass index (BMI≥27 kg/m2) and aberrant gait biomechanics are primary risk factors for knee osteoarthritis (KOA), yet the specific loading patterns linked to clinical disease features remain unclear. Unsupervised machine learning (ML) was used to identify vertical ground reaction force (vGRF) waveform modes of variation and ...
Ashley N. Buck, J. Elyse Borgert, Hyeon Lee, Liubov Arbeeva, Yvonne M. Golightly, Richard F. Loeser, Leigh F. Callahan, Stephen P. Messier, Brian Pietrosimone, Amanda E. Nelson, James S. Marron   +10 more
wiley   +1 more source