publication . Preprint . Article . 2020

A kinematically hot population of young stars in the solar neighbourhood

A S Binks; R D Jeffries; N J Wright;
Open Access English
  • Published: 07 Apr 2020
  • Country: United Kingdom
Abstract
In the last three decades several hundred nearby members of young stellar moving groups (MGs) have been identified, but there has been less systematic effort to quantify or characterise young stars that do not belong to previously identified MGs. Using a kinematically unbiased sample of 225 lithium-rich stars within 100 pc, we find that only $50 \pm 10$ per cent of young ($\lesssim 125$ Myr), low-mass ($0.5<M/M_{\odot}<1.0$) stars, are kinematically associated with known MGs. Whilst we find some evidence that six of the non-MG stars may be connected with the Lower Centaurus-Crux association, the rest form a kinematically "hotter" population, much more broadly di...
Subjects
free text keywords: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies, QB799, Space and Planetary Science, Astronomy and Astrophysics
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