scholarly journals The mass distribution and gravitational potential of the Milky Way

2016 ◽  
Vol 465 (1) ◽  
pp. 76-94 ◽  
Author(s):  
Paul J. McMillan
Keyword(s):  
Mass Distribution ◽  
Gravitational Potential ◽  
Milky Way

scholarly journals The Ballistic Particle Model

1983 ◽  
Vol 100 ◽  
pp. 133-134
Author(s):  
Frank N. Bash
Keyword(s):  
Radial Velocity ◽  
Gravitational Potential ◽  
Molecular Clouds ◽  
Milky Way ◽  
Terminal Velocity ◽  
Particle Model ◽  
The Sun ◽  
Giant Molecular Clouds ◽  
Spiral Pattern ◽  
Armed Spiral

Bash and Peters (1976) suggested that giant molecular clouds (GMC's) can be viewed as ballistic particles launched from the two-armed spiral-shock (TASS) wave with orbits influenced only by the overall galactic gravitational potential perturbed by the spiral gravitational potential in the arms. For GMC's in the Milky Way, the model predicts that the radial velocity observed from the Sun increases with age (time since launch). We showed that the terminal velocity of CO observed from l ≃ 30° to l ≃ 60° can be understood if all GMC's are born in the spiral pattern given by Yuan (1969) and live 30 × 106 yrs. Older GMC's were predicted to have radial velocities which exceed observed terminal velocities.

scholarly journals THE MASS DISTRIBUTION AND ASSEMBLY OF THE MILKY WAY FROM THE PROPERTIES OF THE MAGELLANIC CLOUDS

2011 ◽  
Vol 743 (1) ◽  
pp. 40 ◽  
Author(s):  
Michael T. Busha ◽  
Philip J. Marshall ◽  
Risa H. Wechsler ◽  
Anatoly Klypin ◽  
Joel Primack
Keyword(s):  
Mass Distribution ◽  
Milky Way ◽  
Magellanic Clouds

The Mass Distribution of the Milky Way Deduced from Globular Cluster Dynamics

1996 ◽  
pp. 697-702 ◽  
Author(s):  
B. Dauphole ◽  
J. Colin ◽  
M. Geffert ◽  
M. Odenkirchen ◽  
H.-J. Tucholke
Keyword(s):  
Mass Distribution ◽  
Globular Cluster ◽  
Milky Way

scholarly journals The effect of the Magellanic Clouds on the mass distribution in the galaxy

1991 ◽  
Vol 148 ◽  
pp. 487-488
Author(s):  
G. X. Song
Keyword(s):  
Mass Distribution ◽  
Milky Way ◽  
Galactic Disk ◽  
Initial Position ◽  
Tidal Effect ◽  
Magellanic Clouds ◽  
The Galaxy

The disk of the Milky Way suffered from the tidal effect as the Magellanic Clouds were passing by. Numerical stimulations were performed to study the evolution of the mass distribution in this disk. These simulations were run with the galactic disk initially flat, and different sets of the initial position and velocity of the Magellanic Clouds were considered. One of the most conspicuous observational facts is the warp of the disk of the Milky Way. Results show that the characteristics of this warp are related to the orbit of the Magellanic Clouds.

Spotting a counter-rotating galaxy

2019 ◽  
Vol 14 (S353) ◽  
pp. 231-232
Author(s):  
Michela Rubino ◽  
Alessandro Pizzella ◽  
Lorenzo Morelli
Keyword(s):  
Mass Distribution ◽  
Gravitational Potential ◽  
Astrophysical Objects ◽  
Galaxy Kinematics ◽  
Formation And Evolution ◽  
Disk Component ◽  
Integral Field

AbstractThe presence of counter-rotating (CR) components in galaxies is not that rare but their origin is still unclear. Important clues to the formation and evolution of CR galaxies are provided by galaxy kinematics, such as the mass distribution and the shape of the gravitational potential. In order to better understand the origin and incidence of CR galaxies, we aim at modeling CR stellar disks, as they would be observed with Integral Field Units (IFU) instruments, and measuring the kinematics of these peculiar astrophysical objects to reveal the CR signatures. In the bi-dimensional maps of analysed models, the double sigma signature is the best diagnostic to spot the presence of a CR disk component.

scholarly journals Dynamics of OH/IR Stars in the Inner Galactic Bulge

1993 ◽  
Vol 153 ◽  
pp. 341-342
Author(s):  
Anders Winnberg ◽  
Michael Lindqvist ◽  
Harm J. Habing
Keyword(s):  
Mass Distribution ◽  
Gravitational Potential ◽  
Progress Report ◽  
Dynamical Model ◽  
Galactic Centre ◽  
Galactic Bulge ◽  
Ir Stars

Using the VLA at 1612 MHz Lindqvist et al. (1992a) have found 134 OH/IR stars close to the Galactic Centre (GC). These stars plus 15 from Habing et al. (1983) have been used as probes of the gravitational potential to derive the mass distribution in the inner galactic bulge between ≈ 5 to ≈ 100 pc from the GC (Lindqvist et al., 1992b). In this paper we present a progress report of a dynamical model which we have applied to the data.

Gravitational potential in fractional space

Open Physics ◽  
2007 ◽  
Vol 5 (3) ◽  
Author(s):  
Sami Muslih ◽  
Dumitru Baleanu ◽  
Eqab Rabei
Keyword(s):  
Mass Distribution ◽  
Gravitational Potential ◽  
Universal Constant ◽  
Fractional Mass ◽  
Fractional Space

AbstractIn this paper the gravitational potential with β-th order fractional mass distribution was obtained in α dimensionally fractional space. We show that the fractional gravitational universal constant G α is given by $$G_\alpha = \frac{{2\Gamma \left( {\frac{\alpha }{2}} \right)}}{{\pi ^{\alpha /2 - 1} (\alpha - 2)}}G$$ , where G is the usual gravitational universal constant and the dimensionality of the space is α > 2.

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