A WFC3/HST view of the three stellar populations in the globular cluster NGC 6752

Milone, Antonino; Marino, Anna; Piotto, G; Bedin, L R; Anderson, Jay; Aparicio, A; Bellini, A; Cassisi, S; D'Antona, Francesca; Grundahl, Frank; Monelli, M; Yong, David

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A WFC3/HST view of the three stellar populations in the globular cluster NGC 6752

Date

2013

Authors

Milone, Antonino

Marino, Anna

Piotto, G

Bedin, L R

Anderson, Jay

Aparicio, A

Bellini, A

Cassisi, S

D'Antona, Francesca

Grundahl, Frank

Publisher

IOP Publishing

Abstract

Multi-band Hubble Space Telescope photometry reveals that the main sequence, sub-giant, and the red-giant branch of the globular cluster NGC 6752 splits into three main components in close analogy with the three distinct segments along its horizontal bran