Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-05-16
ASP Conf.Ser. 244 (2001) 104
Astronomy and Astrophysics
Astrophysics
11 pages, 2 figures, available at http://etacha.as.arizona.edu/~eem/etacha/MF01/index.html, to appear in Proc. "Young Stars
Scientific paper
We 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).
Feigelson Eric D.
Mamajek Eric E.
No associations
LandOfFree
The Dispersal of Young Stars and the Greater Sco-Cen Association does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Dispersal of Young Stars and the Greater Sco-Cen Association, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Dispersal of Young Stars and the Greater Sco-Cen Association will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-184459