Other
Scientific paper
Feb 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..393..184f&link_type=abstract
The seventh astrophysical conference: Star formation, near and far. AIP Conference Proceedings, Volume 393, pp. 184-188 (1997).
Other
Pre-Main Sequence Objects, Young Stellar Objects And Protostars, Star Formation, Origin, Formation, Evolution, Age, And Star Formation, Stellar Content And Populations, Morphology And Overall Structure
Scientific paper
The spatial distribution, age distribution and kinematics of T Tauri stars, both close to and widely distributed around active clouds, are considered using simple models of T Tauri dispersal. Models are compared to observations in and around the nearby cloud complexes, in particular the recent discovery of widely scattered young stars from the ROSAT All-Sky Survey. We suggest the dispersal of T Tauri stars has two major causes: slow isotropic drifting of stars away from long-lived star forming clouds, and star formation in short-lived rapidly moving cloudlets associated with large-scale turbulent motions of molecular cloud complexes. A third mechanism for dispersal, dynamical ejection of high velocity T Tauri stars, appears to be less important. Other implications include: star formation in at least one cloud (Chamaeleon I) has been continuous for ~=20 Myr star formation efficiencies of clouds may often be 20% or higher; a large fraction of low-mass stars may form in small shoft-lived cloudlets each producing no more than a few stars; and T Tauri kinematics support molecular evidence for large-scale turbulence in molecular clouds. A full presentation of this study appears in Feigelson (1996).
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