ON Ca II emission as an indicator of the age of young stars

Inseok Song; B. Zuckerman; M. S. Bessell

doi:10.1086/425683

ON Ca II emission as an indicator of the age of young stars

Inseok Song^*, B. Zuckerman, M. S. Bessell

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Chromospheric emission in the Ca II H and K lines has often been used as an age diagnostic for solar mass stars. For 20 such stars with ages less than a few hundred megayears, we compare Ca II ages derived by Wright et al. with ages we derive based on a combination of lithium abundance, X-ray activity, and Galactic space motion. Typically, the Ca II ages are noticeably older than the lithium/X-ray ages, suggesting that a recalibration of the Ca II ages may be necessary.

Original language	English
Pages (from-to)	L125-L127
Journal	Astrophysical Journal
Volume	614
Issue number	2 II
DOIs	https://doi.org/10.1086/425683
Publication status	Published - 20 Oct 2004

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abstract = "Chromospheric emission in the Ca II H and K lines has often been used as an age diagnostic for solar mass stars. For 20 such stars with ages less than a few hundred megayears, we compare Ca II ages derived by Wright et al. with ages we derive based on a combination of lithium abundance, X-ray activity, and Galactic space motion. Typically, the Ca II ages are noticeably older than the lithium/X-ray ages, suggesting that a recalibration of the Ca II ages may be necessary.",

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T1 - ON Ca II emission as an indicator of the age of young stars

AU - Song, Inseok

AU - Zuckerman, B.

AU - Bessell, M. S.

PY - 2004/10/20

Y1 - 2004/10/20

N2 - Chromospheric emission in the Ca II H and K lines has often been used as an age diagnostic for solar mass stars. For 20 such stars with ages less than a few hundred megayears, we compare Ca II ages derived by Wright et al. with ages we derive based on a combination of lithium abundance, X-ray activity, and Galactic space motion. Typically, the Ca II ages are noticeably older than the lithium/X-ray ages, suggesting that a recalibration of the Ca II ages may be necessary.

AB - Chromospheric emission in the Ca II H and K lines has often been used as an age diagnostic for solar mass stars. For 20 such stars with ages less than a few hundred megayears, we compare Ca II ages derived by Wright et al. with ages we derive based on a combination of lithium abundance, X-ray activity, and Galactic space motion. Typically, the Ca II ages are noticeably older than the lithium/X-ray ages, suggesting that a recalibration of the Ca II ages may be necessary.

KW - Stars: activity

KW - Stars: fundamental parameters

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U2 - 10.1086/425683

DO - 10.1086/425683

M3 - Article

SN - 0004-637X

VL - 614

SP - L125-L127

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

ON Ca II emission as an indicator of the age of young stars

Abstract

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