The Dispersal of Young Stars and the Greater Sco-Cen Association

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dc.creatorMamajek, E. E.
dc.creatorFeigelson, E. D.
dc.date2001-05-16
dc.date.accessioned2026-07-07T06:26:16Z
dc.date.available2026-07-07T06:26:16Z
dc.descriptionWe review topics related to the dispersal of young stars from their birth-sites, and focus in particular on the entourage of young stars related to the ongoing star-formation event in the Sco-Cen OB association. We conduct a follow-up kinematic study to that presented in Mamajek, Lawson, & Feigelson (2000; ApJ 544, 356) amongst nearby, isolated, young stars. In addition to the eta Cha and TW Hya groups, we find several more intriguing Sco-Cen outlier candidates: most notably beta Pic, PZ Tel, HD 199143, and HD 100546. We discuss the connection between Sco-Cen and the southern ``150 pc Conspiracy'' molecular clouds, and in particular, Corona Australis. The kinematic evidence suggests that many of the nearby, isolated ~10 Myr-old stars were born near Sco-Cen during the UCL and LCC starbursts 10-15 Myr ago. We hypothesize that these stars inherited 5-10 km/s velocities moving away from Sco-Cen, either through molecular cloud turbulence, or through formation in molecular clouds associated with the expanding Sco-Cen superbubbles (e.g. Loop I).
dc.description11 pages, 2 figures, available at http://etacha.as.arizona.edu/~eem/etacha/MF01/index.html, to appear in Proc. "Young Stars Near Earth: Progress & Prospects", eds. R. Jayawardhana & T. Greene, T., ASP Conf. Series
dc.identifierhttps://arxiv.org/abs/astro-ph/0105290
dc.identifierhttp://arxiv.org/abs/astro-ph/0105290
dc.identifierASP Conf.Ser. 244 (2001) 104
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/97061
dc.subjectAstrophysics
dc.titleThe Dispersal of Young Stars and the Greater Sco-Cen Association
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