Is helium the key parameter in the extended colour spread of the first generation stars in M3?

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Authors: M Tailo, F D’Antona, V Caloi, A P Milone, A F Marino, E Lagioia, G Cordoni

Journal title: Monthly Notices of the Royal Astronomical Society

Journal number: 486/4

Journal publisher: Blackwell Publishing Inc.

Published year: 2019

Published pages: 5895-5906

DOI identifier: 10.1093/mnras/stz1273

ISSN: 0035-8711