层状非均质椭圆星系的剖面和一些动态参数

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomy Reports Pub Date : 2024-07-01 DOI:10.1134/S1063772924700124

S. A. Gasanov

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引用次数: 0

摘要

摘要几种新的分层非均质椭圆星系（EG）模型，其形状可以是三轴椭圆体，也可以是扁球形或长球形，由重子质量和暗物质组成，具有不同的密度分布规律。根据这些模型，确定了 EG 的一些关键动态参数：引力（势）能和旋转动能、总表面亮度、总光度以及与 EG 中心距离有关的速度色散。还确定了星系重要动态参数之间的关系："质量-尺寸"、"质量-速度色散"、"尺寸-色散速度-光度"（表面亮度）。根据这些模型研究了 EG 形成的演变情况。研究结果应用于六十个模型 EG，其参数与实际存在的参数完全一致，并以表格形式列出。

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Profiles and Some Dynamic Parameters of a Layered Inhomogeneous Elliptical Galaxy

Several new models of a layered inhomogeneous elliptical galaxy (EG) having the shape either a triaxial ellipsoid or an oblate or prolate spheroid and consisting of baryonic mass and dark matter with different laws of density distribution—profiles. Based on these models, some key dynamic parameters of the EG were determined: gravitational (potential) energy and rotational kinetic energy, total surface brightness, total luminosity, and velocity dispersion depending on the distance to the EG center. The relationships between the important dynamic parameters of the galaxy have been established: “mass–dimensions”, “mass–velocity dispersion”, “size–dispersion speeds–luminosity” (surface brightness). Evolutionary scenarios for the formation of EG were studied according to these models. The results obtained were applied to sixty model EGs with parameters exactly matching those that actually exist and are presented in the form of tables.

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来源期刊

Astronomy Reports 地学天文-天文与天体物理

CiteScore

1.40

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Astronomy Reports is an international peer reviewed journal that publishes original papers on astronomical topics, including theoretical and observational astrophysics, physics of the Sun, planetary astrophysics, radio astronomy, stellar astronomy, celestial mechanics, and astronomy methods and instrumentation.