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A Pre-Gaia Census of Nearby Stellar Groups

Published online by Cambridge University Press:  27 January 2016

Eric E. Mamajek
Eric E. Mamajek*
Affiliation:
Department of Physics & Astronomy, University of Rochester, Rochester, NY, 14627-0171 email: [email protected]
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Abstract

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The nearest, youngest groups of stars to the Sun provide important samples of age-dated stars for studying circumstellar disk evolution, imaged exoplanets, and brown dwarfs. I briefly comment on the status of the known stellar groups within 100 pc: β Pic, AB Dor, UMa, Car-Near, Tuc-Hor and β Tuc nucleus, Hyades, Col, TW Hya, Car, Coma Ber, 32 Ori, η Cha, and χ1 For. I also discuss some poorly characterized groups and “non-groups.” Grades for 2015 of Pass, Satisfactory, or Fail are assigned to the groups for the purposes of age-dating stars and brown dwarfs. I speculate that Tuc-Hor could have provided a supernova ~60 pc away ~2.2 Myr ago which showered the Earth with traces of 60Fe-bearing dust.

Keywords

open clusters and associations: general — solar neighborhood — stars: distances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S314: Young Stars & Planets Near the Sun , November 2015 , pp. 21 - 26
Copyright
Copyright © International Astronomical Union 2016 

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