2023MNRAS.520.1832B

Query : 2023MNRAS.520.1832B

2023MNRAS.520.1832B - Mon. Not. R. Astron. Soc., 520, 1832-1847 (2023/April-1)

Self-consistent models of our Galaxy.

BINNEY J. and VASILIEV E.

Abstract (from CDS):

A new class of models of stellar discs is introduced and used to build a self-consistent model of our Galaxy. The model is defined by the parameters that specify the action-based distribution functions (DFs) f(J) of four stellar discs (three thin-disc age cohorts and a thick disc), spheroidal bulge and spheroidal stellar and dark haloes. From these DFs plus a specified distribution of gas, we solve for the densities of stars and dark matter and the potential they generate. The principal observational constraints are the kinematics of stars with Gaia Radial Velocity Spectrometer (RVS) data and the density of stars in the column above the Sun. The model predicts the density and kinematics of stars and dark matter throughout the Galaxy, and suggests the structure of the dark halo prior to the infall of baryons. The code used to create the model is available on GITHUB.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): stars: kinematics and dynamics - Galaxy: abundances - Galaxy: disc - Galaxy: fundamental parameters - Galaxy: structure - galaxies: kinematics and dynamics

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Galactic Bar reg ~ ~           ~ 1458 0

Query : 2023MNRAS.520.1832B

Basic data :
NAME Galactic Bar -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		No Coord.

Identifiers (1) :
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NAME Galactic Bar

References (1458 between 1850 and 2026) (Total 1458)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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