What does a universal IMF imply about star formation?

Details What does a universal IMF imply about star formation? What does a universal IMF imply about star formation?

2009-04-29

arxiv.org/abs/0904.4619v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

6 pages, 4 figures. MNRAS, in press

Scientific paper

We show that the same initial mass function (IMF) can result from very different modes of star formation from very similar underlying core and/or system mass functions. In particular, we show that the canonical IMF can be recovered from very similar system mass functions, but with very different mass ratio distributions within those systems. This is a consequence of the basically log-normal shapes of all of the distributions. We also show that the relationships between the shapes of the core, system, and stellar mass functions may not be trivial. Therefore, different star formation in different regions could still result in the same IMF.

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