Results 271 to 280 of about 179,998 (300)

Milky Way Gas Dynamics

Celestial Mechanics and Dynamical Astronomy, 2006
The Milky Way is made up of a central bar, a disk with embedded spiral arms, and a dark matter halo. Observational and theoretical constraints for the characteristic parameters of these components will be presented, with emphasis on the constraints from the dynamics of the Milky Way gas.
Ortwin Gerhard, Peter Englmaier
exaly   +4 more sources

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Kinematics, Dynamics and Structure of the Milky Way

Astrophysics and Space Science Library, 1983
exaly   +2 more sources

Analysis of Orbital Dynamics of Globular Clusters in the Central Region of the Milky Way

Astrophysical Bulletin
The regularity/chaoticity of orbits of 45 globular clusters in the central region of the Galaxy with a radius of 3.5 kpc, which are subject to the greatest influence of the elongated rotating bar, is analyzed. Various methods of analysis are used, namely,
A. Bajkova, A. Smirnov, V. Bobylev
semanticscholar   +1 more source

New Method for Analyzing Orbital Dynamics of Globular Clusters in the Central Region of the Milky Way

Publications of the Pulkovo_Observatory
A new method for determining the nature of the orbital motion (chaotic or regular) of globular clusters in the central region of the Galaxy with a radius of 3.5 kpc, which are most affected by the bar, is proposed.
A. T. Bajkova, A. Smirnov, V. V. Bobylev
semanticscholar   +1 more source

The Structure and Dynamics of the Milky Way Galaxy

2002
Now that we have become familiar with the stars, their properties and their motions, and also with the various components of the interstellar medium, we have collected all the “parts” we need in order to consider our Milky Way galaxy. We begin in Sect. 11.1 with the information about the structure of the Milky Way which can be gained from observations ...
Albrecht Unsöld, Bodo Baschek
openaire   +1 more source

Towards an Understanding of the Dynamics of the Milky Way

2005
Determination of outer rotation curve using Galactic masers The rotation curve of the Galaxy is poorly determined outside the solar circle (e.g. Honma & Sofue 1997). The situation makes difficult to derive the dynamical mass of the Galaxy, which is essential for inferring the amount of Galactic dark gravitating matter.
K. Hachisuka, M. Miyoshi
openaire   +1 more source

Rotation and Dynamics of the Milky Way Galaxy

2020
When Oort returned to Leiden, his parents were in the Dutch East Indies for a year. Already on September 1, the day after his arrival, Oort was introduced to the staff at the Sterrewacht and started his appointment. His old study friend from Groningen, Jan Schilt, also worked in Leiden.
openaire   +1 more source

Dynamics of the Milky Way Bar/Bulge

Proceedings of the International Astronomical Union, 2019
AbstractStellar surveys and dynamical models have recently led to important progress on understanding the dynamical structure of the Milky Way’s bar and central box/peanut bulge. This talk briefly reviews the density structure of the bulge and bar from star count tomography, the cylindrical rotation of bulge stars, and the measurements of their stellar
openaire   +2 more sources

Chemo-dynamical simulations of the Milky Way

2004
Using a state of the art galaxy formation software package, GCD+, we model the formation and evolution of galaxies which resemble our own Galaxy, the Milky Way. The simulations include gravity, gas dynamics, radiative gas cooling, star formation and stellar evolution, tracing the production of several elements and the subsequent pollution of the ...
openaire   +1 more source

Building the largest mock astrometric catalogue of the Milky Way centre in the near infrared for the end-to-end simulation of the JASMINE satellite

Astronomical Telescopes + Instrumentation
There is currently a strong push towards infrared astronomy, like the ground-breaking JWST and the upcoming ROMAN and Gaia NIR missions. The Japanese JASMINE telescope will be the first Near Infrared (NIR) astro-photometric mission to focus on the ...
Pau Ramos, Daisuke Kawata, Ryou Ohsawa, S. Nishiyama, J. Sanders, L. Smith, N. Koshimoto, D. Minniti, P. Lucas   +8 more
semanticscholar   +1 more source