Statistical Confirmation of a Stellar Upper Mass Limit
M. S. Oey$^1$ \& C. J. Clarke$^2$
1 - University of Michigan
2 - IoA, Cambridge
We derive the expectation value for the maximum stellar mass ($m_{\rm max}$)
in an ensemble of $N$ stars, as a function of the IMF upper-mass cutoff
($m_{\rm up}$) and $N$. We statistically demonstrate that the upper IMF of
the local massive star census observed thus far in the Milky Way and
Magellanic Clouds clearly exhibits a universal upper mass cutoff
around $120 - 200\ m_\odot$ for a Salpeter IMF, although the result is
more ambiguous for a steeper IMF.
Reference: Astrophysical Journal Letters
Status: Manuscript has been accepted
Weblink: http://arxiv.org/abs/astro-ph/0501135
Comments:
Email: msoey@umich.edu