Three New Models of Layered Inhomogeneous Elliptical Galaxies

TL;DR

This paper introduces three novel models of elliptical galaxies that align with current astrophysical understanding, enabling calculations of gravitational energy, rotational kinetic energy, and velocity dispersion, with practical application to sixty galaxies.

Contribution

The paper presents three new models of elliptical galaxies and a method to determine key structural parameters, advancing the modeling of galaxy dynamics.

Findings

Models agree with modern galaxy structure understanding

Method effectively estimates galaxy parameters from observational data

Results applied to sixty real elliptical galaxies

Abstract

To solve some problems of celestial mechanics and astrophysics, three new models of an elliptical galaxy (EG) have been created, which are in good agreement with modern understanding of the structure of such galaxies. Based on these models, the total gravitational (potential) energy and rotational kinetic energy of an EG, as well as the velocity dispersion at a distance of its effective radius, are determined. A new method is proposed for determining the average values of the scale radius of an EG and the density at its center, as well as the average value of its key parameter density $\beta$ and its value at a distance corresponding to the effective radius of the galaxy. The results obtained are applied to sixty EGs and presented in the form of tables for ten galaxies.