2018MNRAS.474.3740B

Query : 2018MNRAS.474.3740B

2018MNRAS.474.3740B - Mon. Not. R. Astron. Soc., 474, 3740-3745 (2018/March-1)

Dynamical equivalence, the origin of the Galactic field stellar and binary population, and the initial radius-mass relation of embedded clusters.

BELLONI D., KROUPA P., ROCHA-PINTO H.J. and GIERSZ M.

Abstract (from CDS):

In order to allow a better understanding of the origin of Galactic field populations, dynamical equivalence of stellar-dynamical systems has been postulated by Kroupa and Belloni et al. to allow mapping of solutions of the initial conditions of embedded clusters such that they yield, after a period of dynamical processing, the Galactic field population. Dynamically equivalent systems are defined to initially and finally have the same distribution functions of periods, mass ratios and eccentricities of binary stars. Here, we search for dynamically equivalent clusters using the MOCCA code. The simulations confirm that dynamically equivalent solutions indeed exist. The result is that the solution space is next to identical to the radius-mass relation of Marks & Kroupa, (rh/pc)= 0.1+0.07–0.04 (M_ ecl/M☉_)^0.13±0.04^. This relation is in good agreement with the oIMF. This is achieved by applying a similar procedurebserved density of molecular cloud clumps. According to the solutions, the time-scale to reach dynamical equivalence is about 0.5 Myr which is, interestingly, consistent with the lifetime of ultra-compact H II regions and the time-scale needed for gas expulsion to be active in observed very young clusters as based on their dynamical modelling.

Abstract Copyright: © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: numerical - binaries: general - open clusters and associations: general - galaxies: star clusters: general

Errata: erratum vol. 487, p. 4855 (2019)

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 NGC 3603 OpC 11 14 57.9 -61 14 32           ~ 1136 1

Query : 2018MNRAS.474.3740B

Basic data :
NGC 3603 -- Open Cluster
Other object types: otypes_help 		Cl* (2020A&A,C,...), OpC (2014A&A), HII (GUM,RCW,...), Cl? (2013A&A), * (MHR), ISM (BRAN), X (SRGA), Rad (GRS)
ICRS coord. (ep=J2000) : 		11 14 57.9 -61 14 32 (X-ray) [ 5000 5000 90 ] E 2022A&A...661A..38P
FK4 coord. (ep=B1950 eq=1950) : 		11 12 48.4 -60 58 10 [ 5000 5000 90 ]
Gal coord. (ep=J2000) : 		291.5937 -00.5123 [ 5000 5000 90 ]
Proper motions mas/yr : 		-5.543 1.961 [0.010 0.010 90] C 2020A&A...633A..99C
Radial velocity / Redshift / cz : 		V(km/s) 44.04 [31.27] / z(spectroscopic) 0.000147 [0.000104] / cz 44.04 [31.27]
   (Opt) E 2021A&A...647A..19T
Parallaxes (mas): 		0.076 [0.005] C 2020A&A...633A..99C
Angular size (arcmin): 		4.7 4.7 0 (Opt) D 2020A&A...633A..99C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1
: 379 		: 1 Display criteria :

Identifiers (15) :
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NGC 3603 GAL 291.63-00.54 RCW 57B [GG70] 291.6-0.5
BRAN 348B GRS G291.60 -00.50 SRGA J111457.9-611432 [GSL2002] 27
C 1112-609 GUM 38b Villafranca O-001 [KPS2012] MWSC 1926
Cl VDBH 115 MHR 14 [FSR2007] 1576

References (1136 between 1850 and 2026) (Total 1136)
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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Collections of Measurements Description of Measurements

Velocities : 3    Distance : 3    Plx : 3    PM : 5   

   

Observing logs
Herschel : 35    ISO : 54   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 3603

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NGC 3603

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