The stellar mass distribution of the Milky Way's bar: an analytical model

被引：26

作者：

Sormani, Mattia C. ^{[1
]}

Gerhard, Ortwin ^{[2
]}

Portail, Matthieu ^{[3
]}

Vasiliev, Eugene ^{[4
]}

Clarke, Jonathan ^{[2
]}

机构：

[1] Heidelberg Univ, Inst Theoret Astrophys, Albert Ueberle Str 2, D-69120 Heidelberg, Germany

[2] Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany

[3] CAPE Analyt, Gottfried Keller Str 35, D-81245 M unchen, Germany

[4] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 514卷 / 01期

基金：

欧洲研究理事会;

关键词：

Galaxy: bulge; Galaxy: centre; Galaxy: kinematics and dynamics; Galaxy: structure; galaxies: bar; CENTRAL MOLECULAR ZONE; GALACTIC BAR; PATTERN SPEED; GAS-DYNAMICS; WAY BAR; BULGE; GALAXY; STARS; KINEMATICS; EVOLUTION;

D O I：

10.1093/mnrasl/slac046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analytic model of the stellar mass distribution of the Milky Way bar. The model is obtained by fitting a multicomponent parametric density distribution to a made-to-measure N-body model of Portail et al., constructed to match a variety of density and kinematics observational data. The analytic model reproduces in detail the 3D density distribution of the N-body bar including the X-shape. The model and the gravitational potential it generates are available as part of the software package AGAMA for galactic dynamics, and can be readily used for orbit integrations, hydrodynamical simulations, or other applications.

引用

页码：L1 / L5

页数：5

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