Statistical Confirmation of a Stellar Upper Mass Limit
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Astrophysics, abstract
astro-ph/0501135
From: Sally Oey [view email]
Date: Fri, 7 Jan 2005 22:51:07 GMT (41kb)
Statistical Confirmation of a Stellar Upper Mass Limit
Authors:
M. S. Oey (U. Michigan),
C. J. Clarke (IoA, Cambridge)
Comments: PDF, 5 pages, 4 figures. Accepted to the Astrophysical Journal
Letters
We derive the expectation value for the maximum stellar mass (m_max) in an
ensemble of N stars, as a function of the IMF upper-mass cutoff (m_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_sun for a Salpeter
IMF, although the result is more ambiguous for a steeper IMF.
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