activity
20012009
most citedStar formation at very low metallicity. I: Chemistry and cooling at low densities

186 citations · 975 across the 16 of their papers we have counts for

collaborators

16 papers

astro-ph.GA2009★ 11 cited

Dependence of the Star Formation Efficiency on the Parameters of Molecular Cloud Formation Simulations

Yetli Rosas-Guevara, Enrique Vazquez-Semadeni, Gilberto C. Gomez +1

We investigate the response of the star formation efficiency (SFE) to the main parameters of simulations of molecular cloud formation by the collision of warm diffuse medium (WNM)…

astro-ph.GA2009★ 143 cited

High- and Low-Mass Star Forming Regions from Hierarchical Gravitational Fragmentation. High local Star Formation Rates with Low Global Efficiencies

Enrique Vazquez-Semadeni, Gilberto C. Gomez, A. Katharina Jappsen +2

We investigate the properties of "star forming regions" in a previously published numerical simulation of molecular cloud formation out of compressive motions in the warm neutral a…

astro-ph2008★ 103 cited

Algorithmic comparisons of decaying, isothermal, supersonic turbulence

S. Kitsionas, C. Federrath, R. Klessen +10

Contradicting results have been reported in the literature with respect to the performance of the numerical techniques employed for the study of supersonic turbulence. We aim at ch…

astro-ph2008★ 53 cited

Star Formation at Very Low Metallicity. V. The Greater Importance of Initial Conditions Compared to Metallicity Thresholds

A. -K. Jappsen, M. -M. Mac Low, S. C. O. Glover +2

The formation of the first stars out of metal-free gas appears to result in stars at least an order of magnitude more massive than in the present-day case. We here consider what co…

astro-ph2008★ 7 cited

The formation of the first galaxies and the transition to low-mass star formation

Thomas H. Greif, Dominik R. G. Schleicher, Jarrett L. Johnson +6

The formation of the first galaxies at redshifts z ~ 10-15 signaled the transition from the simple initial state of the universe to one of ever increasing complexity. We here revie…

astro-ph2008

Massive Star Forming Regions: Turbulent Support or Global Collapse?

Enrique Vazquez-Semadeni, Javier Ballesteros-Paredes, Ralf S. Klessen +1

We present preliminary numerical evidence that the physical conditions in high-mass star forming regions can arise from global gravitational infall, with the velocity dispersions b…