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No evidence for younger stellar generations within the intermediate-age massive clusters NGC 1783, NGC 1806 and NGC 411

Cabrera-Ziri, I, Niederhofer, F, Bastian, N, Rejkuba, M, Balbinot, E, Kerzendorf, WE, Larsen, SS, Mackey, AD, Dalessandro, E, Mucciarelli, A, Charbonnel, C, Hilker, M, Gieles, M and H enault-Brunet, V (2016) No evidence for younger stellar generations within the intermediate-age massive clusters NGC 1783, NGC 1806 and NGC 411 Monthly Notices of the Royal Astronomical Society, 459. pp. 4218-4223.

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Abstract

Recently, Li et al. claimed to have found evidence for multiple generations of stars in the intermediate-age clusters NGC 1783, NGC 1806 and NGC 411 in the Large and Small Magellanic Clouds. Here we show that these young stellar populations are present in the field regions around these clusters and are not likely associated with the clusters themselves. Using the same data sets, we find that the background subtraction method adopted by the authors does not adequately remove contaminating stars in the small number Poisson limit. Hence, we conclude that their results do not provide evidence of young generations of stars within these clusters.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Cabrera-Ziri, IUNSPECIFIEDUNSPECIFIED
Niederhofer, FUNSPECIFIEDUNSPECIFIED
Bastian, NUNSPECIFIEDUNSPECIFIED
Rejkuba, MUNSPECIFIEDUNSPECIFIED
Balbinot, EUNSPECIFIEDUNSPECIFIED
Kerzendorf, WEUNSPECIFIEDUNSPECIFIED
Larsen, SSUNSPECIFIEDUNSPECIFIED
Mackey, ADUNSPECIFIEDUNSPECIFIED
Dalessandro, EUNSPECIFIEDUNSPECIFIED
Mucciarelli, AUNSPECIFIEDUNSPECIFIED
Charbonnel, CUNSPECIFIEDUNSPECIFIED
Hilker, MUNSPECIFIEDUNSPECIFIED
Gieles, MUNSPECIFIEDUNSPECIFIED
H enault-Brunet, VUNSPECIFIEDUNSPECIFIED
Date : 22 April 2016
Identification Number : 10.1093/mnras/stw966
Copyright Disclaimer : This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
Depositing User : Symplectic Elements
Date Deposited : 08 Jul 2016 15:01
Last Modified : 08 Jul 2016 15:01
URI: http://epubs.surrey.ac.uk/id/eprint/811150

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