2017MNRAS.472.1760G

Query : 2017MNRAS.472.1760G

2017MNRAS.472.1760G - Mon. Not. R. Astron. Soc., 472, 1760-1769 (2017)

Hierarchical formation of Westerlund 1: a collapsing cluster with no primordial mass segregation?

GENNARO M., GOODWIN S.P., PARKER R.J., ALLISON R.J. and BRANDNER W.

Abstract (from CDS):

We examine the level of substructure and mass segregation in the massive, young cluster Westerlund 1. We find that it is relatively smooth, with little or no mass segregation, but with the massive stars in regions of significantly higher than average surface density. While an expanding or bouncing-back scenario for the evolution of Westerlund 1 cannot be ruled out, we argue that the most natural model to explain these observations is one in which Westerlund 1 formed with no primordial mass segregation and at a similar or larger size than we now observe.

Abstract Copyright: 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: kinematics and dynamics - open clusters and associations: individual: Westerlund 1

VizieR on-line data: <Available at CDS (J/MNRAS/472/1760): table1.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 2

Full paper

View the references in ADS

Number of rows : 2

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 Orion Nebula Cluster	OpC	05 35.0	-05 29						~	2514	0
2	Cl Westerlund 1	OpC	16 47 02.4	-45 51 07						~	655	1

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