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arxiv: 1210.6028 · v1 · pith:WSKYECY2new · submitted 2012-10-22 · 🌌 astro-ph.GA

Gas surface density, star formation rate surface density, and the maximum mass of young star clusters in a disk galaxy. I. The flocculent galaxy M33

Rosa A. Gonzalez-Lopezlira (UNAM , Bonn) , Jan Pflamm-Altenburg (Bonn) , Pavel Kroupa (Bonn) This is my paper
classification 🌌 astro-ph.GA
keywords sigmastarclustergalaxymassmaximumproportionalsurface
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We analyze the relationship between maximum cluster mass, M_max, and surface densities of total gas (Sigma_gas), molecular gas (Sigma_H2) and star formation rate (Sigma_SFR) in the flocculent galaxy M33, using published gas data and a catalog of more than 600 young star clusters in its disk. By comparing the radial distributions of gas and most massive cluster masses, we find that M_max is proportional to Sigma_gas^4.7, M_max is proportional Sigma_H2^1.3, and M_max is proportional to Sigma_SFR^1.0. We rule out that these correlations result from the size of sample; hence, the change of the maximum cluster mass must be due to physical causes.

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