The Stellar IMF in Low-Metallicity Gas

Details The Stellar IMF in Low-Metallicity Gas The Stellar IMF in Low-Metallicity Gas

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1294..138g&link_type=abstract

THE FIRST STARS AND GALAXIES: CHALLENGES FOR THE NEXT DECADE. AIP Conference Proceedings, Volume 1294, pp. 138-141 (2010).

Physics

Stellar Mass, Accretion Disks, Protostellar Clouds, Star Formation, Masses, Infall, Accretion, And Accretion Disks, Pre-Main Sequence Objects, Young Stellar Objects And Protostars, Star Formation

Scientific paper

The observed slope at the high-mass end of the initial mass function displays a remarkable universality in a wide variety of physical environments. We argue that competitive accretion-the ongoing accretion of gas from a common reservoir by a collection of protostellar cores-provides a natural explanation for this universal slope. We show that the conditions required for competitive accretion to operate can be achieved even in gas with a metallicity as low as 10- Zsolar, and hence argue that even the lowest metallicity star-forming systems should produce stars with an IMF that is similar to that for present-day stars.

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