Title：Beyond turbulence: a fundamentally different mode of cluster formation in Orion

　　Speaker：Prof. Amy Stutz (University of Concepción, 智利）

　　Abstract：We compare 3 constituents of Orion A (gas, protostars, and pre-main-sequence stars), both morphologically and kinematically, to show the following. Essentially all protostars lie superposed on the Integral Shaped Filament (ISF), while almost all YSOs do not. The fact that protostars move <1 kms relative to the filaments while YSOs move several times faster implies that a “slingshot mechanism” may eject protostars from the dense filamentary cradle. The B-field strengths, compared with the gas mass distribution, indicates that magnetic instabilities may be propagating through the cloud.

　　Time：23 Feb. Thursday, 9:30am

　　Place：402 Room, Astronomy Building

欢迎各位老师、同学参加！

　　                                     南京大学天文与空间科学学院