2004MNRAS.351..649K

Query : 2004MNRAS.351..649K

2004MNRAS.351..649K - Mon. Not. R. Astron. Soc., 351, 649-662 (2004/June-3)

Interpreting the colour-magnitude diagrams of open star clusters through numerical simulations.

KALIRAI J.S. and TOSI M.

Abstract (from CDS):

We present detailed comparisons between high quality observational colour-magnitude diagrams (CMDs) of open star clusters and synthetic CMDs based on Monte Carlo numerical simulations. The comparisons account for all of the main parameters which determine the shape of the CMD for a stellar population. For the four clusters studied, NGC 6819, 2099 (M37), 2168 (M35) and 2323 (M50), we derive reddening, distance, age, binary fraction, star formation rate and indicative metallicity by comparing the locations and density of points in the observed CMDs to the simulated CMDs. We estimate the uncertainties related to stellar evolution theories by adopting various sets of stellar models for all of the synthetic CMDs and discuss which stellar models provide the theoretical CMDs that best reproduce the observations.

Abstract Copyright: 2004 RAS

Journal keyword(s): methods: {em N}-body simulations - open clusters and associations: general - open cluster and associations: individual: NGC 2099 - open cluster and associations: individual: NGC 2168 - open cluster and associations: individual: NGC 2323 - open cluster and associations: individual: NGC 6819

Simbad objects: 8

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Number of rows : 8
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 SA 92- reg 00 55 03.80 +00 47 13.2           ~ 102 0
2 SA 95- reg 03 53 21.0 -00 01 10           ~ 85 0
3 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
4 M 37 OpC 05 52 18.6 +32 32 36           ~ 436 0
5 NGC 2168 OpC 06 09 07.5 +24 20 15           ~ 604 0
6 NGC 2323 OpC 07 02 47.3 -08 22 07           ~ 212 0
7 NGC 6819 OpC 19 41 18.3 +40 11 19   8.21 7.3     ~ 719 0
8 NGC 6939 OpC 20 31 40.6 +60 38 54           ~ 171 0

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