Searching for new young stars in the Northern hemisphere: the Pisces moving group
Abstract
Using the kinematically unbiased technique described in Binks, Jeffries & Maxted (2015), we present optical spectra for a further 122 rapidly rotating (rotation periods <6 d), X-ray active FGK stars, selected from the SuperWASP survey. We identify 17 new examples of young, probably single stars with ages of <200 Myr and provide additional evidence for a new Northern hemisphere kinematic association: the Pisces moving group (MG). The group consists of 14 lithium-rich G- and K-type stars that have a dispersion of only ∼3 km s-1 in each Galactic space velocity coordinate. The group members are approximately coeval in the colour-magnitude diagram, with an age of 30-50 Myr, and have similar, though not identical, kinematics to the Octans-Near MG.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- January 2018
- DOI:
- 10.1093/mnras/stx2252
- arXiv:
- arXiv:1708.09541
- Bibcode:
- 2018MNRAS.473.2465B
- Keywords:
-
- stars: low-mass;
- stars: pre-main-sequence;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 22 pages, 11 figures, 8 tables