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Sam Geen

Researcher at University of Amsterdam

Publications -  16
Citations -  348

Sam Geen is an academic researcher from University of Amsterdam. The author has contributed to research in topics: Star formation & Molecular cloud. The author has an hindex of 8, co-authored 16 publications receiving 231 citations. Previous affiliations of Sam Geen include Heidelberg University & Paris Diderot University.

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Interpreting the star formation efficiency of nearby molecular clouds with ionizing radiation

TL;DR: In this article, the origin of observed local star formation relations using radiative magnetohydrodynamic simulations with self-consistent star formation and ionising radiation was investigated, and the most diffuse simulated clouds matched the observed clouds relatively well.
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Composite star formation histories of early-type galaxies from minor mergers: prospects for WFC3

TL;DR: In this article, the star formation history of nearby early-type galaxies is investigated via numerical modeling, and it is shown that the evolution of star formation rate is extended over several dynamical times and shows peaks which correspond to pericentre passages of the satellite.
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On the indeterministic nature of star formation on the cloud scale

TL;DR: In this article, the yule suite of 26 radiative magnetohydrodynamic (RMHD) simulations of a 10,000 solar mass cloud similar to those in the solar neighbourhood is used to determine how sensitive the star formation efficiency of molecular clouds is to randomised inputs in the star creation feedback loop, and to what extent relationships between emergent cloud properties and the SFE can be recovered.
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Simulating star clusters across cosmic time - I. Initial mass function, star formation rates, and efficiencies

TL;DR: In this article, a set of radiation-magneto-hydrodynamic simulations of star formation in self-gravitating, turbulent molecular clouds, including their UV radiation feedback, is presented.
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The geometry and dynamical role of stellar wind bubbles in photoionized H II regions

TL;DR: In this article, the authors present radiative magnetohydrodynamic simulations of turbulent molecular clouds that form individual stars of 30, 60 and 120 solar masses emitting winds and ultraviolet radiation following realistic stellar evolution tracks.