Stäckel-type dynamic model of the Galaxy based on maser kinematic data

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 potential is of Stäckel's type. The corresponding space density function is determined from Poisson's equation.

7 pages, 4 figures. Published in Baltic Astronomy (BA)

References in corpus (5)

• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• Trigonometric Parallaxes of Star Forming Regions in the Scutum Spiral Arm
• Determination of the Solar Galactocentric distance from masers kinemics
• On the possibility of applying the quasi-isothermal Stäckel's model to our Galaxy
• On the possibility of determining the distance to the Galactic center from the geometry of spiral arm segments