A Pre-Gaia Census of Nearby Stellar Groups. Issue Volume 10:Issue S314(2015) (November 2015)

• Record Type: Journal Article
• Authors: Mamajek, Eric E.
• Editors: Kastner, J. H.; Stelzer, B.; Metchev, S. A.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 10:Issue S314(2015)
• Page Start: 21
• Page End: 26
• Publication Date: 2015-11
• Subjects: open clusters and associations: general — solar neighborhood — stars: distances; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921315006250
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: 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 χ 1 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 60 Fe-bearing dust.