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The seeds of the first supermassive black holes may have resulted from the direct collapse of hot primordial gas in $\\gtrsim 10^4$ K haloes, forming a supermassive or quasistar as an intermediate stage.\n  Aims. We explore the formation of a protostar resulting from the collapse of primordial gas in the presence of a strong Lyman-Werner radiation background. Particularly, we investigate the impact of turbulence and rotation on the fragmentation behaviour of the gas cloud. We accomplish this goal by varying the initial turbulent and rotational velocities.\n  Methods. 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Van Borm, D. R. G. Schleicher, M. A. Latif, M. Spaans, S. Bovino, T. Grassi","submitted_at":"2014-08-06T12:06:20Z","abstract_excerpt":"Context. The seeds of the first supermassive black holes may have resulted from the direct collapse of hot primordial gas in $\\gtrsim 10^4$ K haloes, forming a supermassive or quasistar as an intermediate stage.\n  Aims. We explore the formation of a protostar resulting from the collapse of primordial gas in the presence of a strong Lyman-Werner radiation background. Particularly, we investigate the impact of turbulence and rotation on the fragmentation behaviour of the gas cloud. We accomplish this goal by varying the initial turbulent and rotational velocities.\n  Methods. 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