2019MNRAS.490.1026H

Query : 2019MNRAS.490.1026H

2019MNRAS.490.1026H - Mon. Not. R. Astron. Soc., 490, 1026-1043 (2019/November-3)

Signatures of resonance and phase mixing in the Galactic disc.

HUNT J.A.S., BUB M.W., BOVY J., MACKERETH J.T., TRICK W.H. and KAWATA D.

Abstract (from CDS):

Gaia DR2 has provided an unprecedented wealth of information about the kinematics of stars in the Solar neighbourhood, and has highlighted the degree of features in the Galactic disc. We confront the data with a range of bar and spiral models in both action-angle space, and the RG-vph plane. We find that the phase mixing induced by transient spiral structure creates ridges and arches in the local kinematics which are consistent with the Gaia data. We are able to produce a qualitatively good match to the data when combined with a bar with a variety of pattern speeds, and show that it is non-trivial to decouple the effects of the bar and the spiral structure.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Galaxy: bulge - Galaxy: disc - Galaxy: fundamental parameters - Galaxy: kinematics and dynamics - solar neighbourhood - Galaxy: structure

Simbad objects: 9

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Number of rows : 9
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 Per Arm PoG 03 30 +45.0           ~ 1672 0
2 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
4 NAME Hercules Stream MGr ~ ~           ~ 264 0
5 NAME Hyades Moving Group MGr ~ ~           ~ 300 0
6 NAME Galactic Bar reg ~ ~           ~ 1458 0
7 NAME Sirius Moving Group MGr ~ ~           ~ 125 0
8 NAME Pleiades Moving Group MGr ~ ~           ~ 297 0
9 NAME Coma Berenices Moving Group MGr ~ ~           ~ 103 0

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