SIMBAD references

2014AJ....148...70M - Astron. J., 148, 70 (2014/October-0)

Characterizing the AB Doradus moving group via high-resolution spectroscopy and kinematic traceback.


Abstract (from CDS):

We present a detailed analysis of 10 proposed F and G members of the nearby, young moving group AB Doradus (ABD). Our sample was obtained using the 2.7 m telescope at the McDonald Observatory with the coude echelle spectrograph, achieving R ∼ 60,000 and signal-to-noise ratio ∼200. We derive spectroscopic Teff, log(g), [Fe/H], and microturbulance (vt) using a bootstrap method of the TGVIT software resulting in typical errors of 33K in Teff, 0.08 dex in log(g), 0.03 dex in [Fe/H], and 0.13 km/s in vt. Characterization of the ABD sample is performed in three ways: (1) chemical homogeneity, (2) kinematic traceback, and (3) isochrone fitting. We find the average metal abundance is [M/H] = -0.03±0.06 with a traceback age of 125 Myr. Our stars were fit to three different evolutionary models and we found that the best match to our ABD sample is the YREC [M/H] = -0.1 model. In our sample of 10 stars, we identify 1 star that is a probable non-member, 3 enigmatic stars, and 6 stars with confirmed membership. We also present a list of chemically coherent stars from this study and the Barenfeld et al. study.

Abstract Copyright:

Journal keyword(s): stars: fundamental parameters - stars: kinematics and dynamics - stars: pre-main sequence

CDS comments: Misprints : BD+47 4749 = BD+41 4749, BD-04 1065 = BD-04 1063.

Simbad objects: 38

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