2019MNRAS.490L..32S

Query : 2019MNRAS.490L..32S

2019MNRAS.490L..32S - Mon. Not. R. Astron. Soc., 490, L32-L37 (2019/November-3)

Simulating cosmological substructure in the solar neighbourhood.

SIMPSON C.M., GARGIULO I., GOMEZ F.A., GRAND R.J.J., MAFFIONE N., COOPER A.P., DEASON A.J., FRENK C., HELLY J., MARINACCI F. and PAKMOR R.

Abstract (from CDS):

We explore the predictive power of cosmological, hydrodynamical simulations for stellar phase-space substructure and velocity correlations with the AURIGA simulations and AURIGAIA mock Gaia catalogues. We show that at the solar circle the AURIGA simulations commonly host phase-space structures in the stellar component that have constant orbital energies and arise from accreted subhaloes. These structures can persist for a few Gyr, even after coherent streams in position space have been erased. We also explore velocity two-point correlation functions and find this diagnostic is not deterministic for particular clustering patterns in phase space. Finally, we explore these structure diagnostics with the AURIGAIA catalogues and show that current catalogues have the ability to recover some structures in phase space but careful consideration is required to separate physical structures from numerical structures arising from catalogue generation methods.

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

Journal keyword(s): methods: numerical - catalogues - Galaxy: kinematics and dynamics - solar neighbourhood - Galaxy: structure - cosmology: theory

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 : 2019MNRAS.490L..32S

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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