The Isochronal Age Scale of Young Moving Groups in the Solar Neighbourhood

被引：0

作者：

Bell, Cameron P. M. ^{[1
]}

Mamajek, Eric E. ^{[1
]}

Naylor, Tim ^{[2
]}

机构：

[1] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

[2] Univ Exeter, Sch Phys & Astron, Exeter EX4 4QL, Devon, England

来源：

YOUNG STARS & PLANETS NEAR THE SUN | 2016年 / 10卷 / 314期

关键词：

stars: evolution; stars: formation; stars: pre-main sequence; stars: fundamental parameters; techniques: photometric; solar neighbourhood; open clusters and associations: general; Hertzsprung-Russell and C-M diagrams; MAIN-SEQUENCE ISOCHRONES;

D O I：

10.1017/S1743921315006213

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a self-consistent, absolute isochronal age scale for young (less than or similar to 200Myr), nearby (less than or similar to 100 pc) moving groups, which is consistent with recent lithium depletion boundary ages for both the beta Pic and Tucana-Horologium moving groups. This age scale was derived using a set of semi-empirical pre-main-sequence model isochrones that incorporate an empirical colour-T-eff relation and bolometric corrections based on the observed colours of Pleiades members, with theoretical corrections for the dependence on log g. Absolute ages for young, nearby groups are vital as these regions play a crucial role in our understanding of the early evolution of low- and intermediate-mass stars, as well as providing ideal targets for direct imaging and other measurements of dusty debris discs, substellar objects and, of course, extrasolar planets.

引用

页码：41 / 48

页数：8

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