Searching for new young stars in the northern hemisphere: The Pisces Moving Group
| Autor: | R. D. Jeffries, J. L. Ward, A. S. Binks |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
010308 nuclear & particles physics Northern Hemisphere Astronomy FOS: Physical sciences Astronomy and Astrophysics Kinematics 01 natural sciences Optical spectra Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Group (periodic table) 0103 physical sciences QB460 010303 astronomy & astrophysics Rotation (mathematics) Solar and Stellar Astrophysics (astro-ph.SR) |
| ISSN: | 0035-8711 |
| Popis: | Using the kinematically unbiased technique described in Binks, Jeffries & Maxted (2015), we present optical spectra for a further 122 rapidly-rotating (rotation periods < 6 days), 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 $\sim $3 kms$^{-1}$ in each Galactic space velocity coordinate. The group members are approximately co-eval in the colour-magnitude diagram, with an age of 30-50 Myr, and have similar, though not identical, kinematics to the Octans-Near MG. 22 pages, 11 figures, 8 tables |
| Databáze: | OpenAIRE |
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