Statistical Confirmation of a Stellar Upper Mass Limit

Details Statistical Confirmation of a Stellar Upper Mass Limit Statistical Confirmation of a Stellar Upper Mass Limit

2005-01-07

arxiv.org/abs/astro-ph/0501135v1

Astrophys.J. 620 (2005) L43-L46

Astronomy and Astrophysics

Astrophysics

PDF, 5 pages, 4 figures. Accepted to the Astrophysical Journal Letters

Scientific paper

10.1086/428396

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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