SIMBAD references

2009MNRAS.398...33P - Mon. Not. R. Astron. Soc., 398, 33-46 (2009/September-1)

Inefficient star formation: the combined effects of magnetic fields and radiative feedback.


Abstract (from CDS):

We investigate the effects of magnetic fields and radiative protostellar feedback on the star formation process using self-gravitating radiation magnetohydrodynamical calculations. We present results from a series of calculations of the collapse of 50M molecular clouds with various magnetic field strengths and with and without radiative transfer. We find that both magnetic fields and radiation have a dramatic impact on star formation, though the two effects are in many ways complementary. Magnetic fields primarily provide support on large scales to low-density gas, whereas radiation is found to strongly suppress small-scale fragmentation by increasing the temperature in the high-density material near the protostars. With strong magnetic fields and radiative feedback, the net result is an inefficient star formation process with a star formation rate of ≲ 10 per cent per free-fall time that approaches the observed rate, although we have only been able to follow the calculations for 1/3 of a free-fall time beyond the onset of star formation.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): magnetic fields - MHD - stars: formation - stars: low-mass, brown dwarfs - ISM: clouds - galaxies: star clusters

Simbad objects: 5

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