Sodium content as a predictor of the advanced evolution of globular cluster stars

Simon W. Campbell (), Valentina D’Orazi, David Yong, Thomas N. Constantino, John C. Lattanzio, Richard J. Stancliffe, George C. Angelou, Elizabeth C. Wylie- de Boer and Frank Grundahl
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Simon W. Campbell: Monash Centre for Astrophysics, School of Mathematical Sciences, Monash University
Valentina D’Orazi: Monash Centre for Astrophysics, School of Mathematical Sciences, Monash University
David Yong: Research School of Astronomy and Astrophysics, Australian National University, Weston, Australian Capital Territory 2611, Australia
Thomas N. Constantino: Monash Centre for Astrophysics, School of Mathematical Sciences, Monash University
John C. Lattanzio: Monash Centre for Astrophysics, School of Mathematical Sciences, Monash University
Richard J. Stancliffe: Research School of Astronomy and Astrophysics, Australian National University, Weston, Australian Capital Territory 2611, Australia
George C. Angelou: Monash Centre for Astrophysics, School of Mathematical Sciences, Monash University
Elizabeth C. Wylie- de Boer: Research School of Astronomy and Astrophysics, Australian National University, Weston, Australian Capital Territory 2611, Australia
Frank Grundahl: Stellar Astrophysics Centre, Aarhus University, Ny Munkegade 1, DK-8000 Aarhus C, Denmark

Nature, 2013, vol. 498, issue 7453, 198-200

Abstract: Investigations show that all the second-generation stars in the globular cluster NGC 6752 fail to reach the asymptotic giant branch (AGB) phase; every AGB star in the sample has a low sodium abundance, indicating that they are exclusively first-generation stars.

Date: 2013
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DOI: 10.1038/nature12191

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