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2022RNAAS...6...14F - Research Notes of the AAS, 6, 14 (2022/January-0)

On the Brightest Horizontal Branch Population II Star γ Piscium.

FUHRMANN K. and CHINI R.

Abstract (from CDS):

The bright star γ Psc is among the nearest Population II giants located in the red clump region. Here we demonstrate that γ Psc is actually a core-helium burning horizontal branch star. As such, the τ ≃ 12 Gyr old γ Psc is found to be slightly over-massive at MHB = 0.97 ± 0.12 M⊙, which suggests that it is possibly a rejuvenated source.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Fundamental parameters of stars - Horizontal branch stars - Population II stars - High-velocity stars - Blue straggler stars

Simbad objects: 1

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