Characterizing the AB Doradus Moving Group Via High Resolution Spectroscopy and Kinematic Traceback
作者： Kyle McCarthy , Ronald Wilhelm
DOI: 10.1088/0004-6256/148/4/70
关键词: AB Doradus moving group 、 Astrophysics 、 Astronomy 、 Physics 、 Star (game theory) 、 Kinematics 、 Spectroscopy 、 High resolution 、 Stars
摘要: We present a detailed analysis of 10 proposed F and G members the nearby, young moving group AB Doradus (ABD). Our sample was obtained using 2.7m telescope at McDonald Observatory with coude echelle spectrograph, achieving R $\sim$ 60,000 S/N 200. derive spectroscopic T$_{eff}$, log(g), [Fe/H], microturbulance (v$_{t}$) bootstrap method TGVIT software resulting in typical errors 33K 0.08 dex 0.03 0.13 km s$^{-1}$ v$_{t}$. Characterization ABD is performed three ways: (1) Chemical homogeneity, (2) Kinematic Traceback, (3) Isochrone fitting. find average metal abundance [M/H] = -0.03 $\pm$ 0.06 traceback age 125 Myrs. stars were fit to 3 different evolutionary models (Siess et al. 2000, Baraffe 1998, YREC) we found best match our YREC -0.1 model. In stars, identify 1 star which probable non-member, enigmatic 6 confirmed membership. also list chemically coherent from this study Barenfeld (2013) study.
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