Angular Momentum and the Formation of Massive Stars

Details Angular Momentum and the Formation of Massive Stars Angular Momentum and the Formation of Massive Stars

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..387...86w&link_type=abstract

Massive Star Formation: Observations Confront Theory ASP Conference Series, Vol. 387, proceedings of the conference held 10-14 S

Astronomy and Astrophysics

Astronomy

Scientific paper

Recent studies of the distribution of rotation speeds, N(vsini) among O and B stars show that massive stars located in bound clusters have a higher mean rotation speed and a paucity of slowly rotating stars when compared with their analogs in unbound associations and among field stars. Cluster-forming molecular clouds are characterized by higher surface density and higher turbulent speeds. If higher turbulent speeds are also characteristic of the initial conditions of individual star-forming cores, then the resulting higher time-averaged accretion rates offer a plausible explanation for the higher rotation speeds.

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