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Observational hints of a real age spread in the young LMC star cluster NGC 1971


Piatti, AE and Cole, A, Observational hints of a real age spread in the young LMC star cluster NGC 1971, Monthly Notices of the Royal Astronomical Society, 470 pp. L77-L81. ISSN 0035-8711 (2017) [Refereed Article]


Copyright Statement

Copyright 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

DOI: doi:10.1093/mnrasl/slx081


We report that the serendipitous young Large Magellanic Cloud cluster NGC 1971 exhibits an extended main-sequence turn-off (eMSTO) possibly originated mostly by a real age spread. We used CT1 Washington photometry to produce a colour–magnitude diagram (CMD) with the fiducial cluster features. From its eMSTO, we estimated an age spread of ∼170 Myr (observed age range 100–280 Myr), once observational errors, stellar binarity, overall metallicity variations and stellar rotation effects were subtracted in quadrature from the observed age width.

Item Details

Item Type:Refereed Article
Keywords:galaxies: individual, LMC - galaxies, star clusters: general - galaxies, star clusters: individual: NGC 1971
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Cole, A (Professor Andrew Cole)
ID Code:123474
Year Published:2017
Web of Science® Times Cited:18
Deposited By:Mathematics and Physics
Deposited On:2018-01-09
Last Modified:2018-04-27
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