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11 papers · 2 filters
The Power Spectrum of Turbulence in NGC 1333: Outflows or Large-Scale Driving?
Paolo Padoan, Mika Juvela, Alexei G. Kritsuk +1
Is the turbulence in cluster-forming regions internally driven by stellar outflows or the consequence of a large-scale turbulent cascade? We address this question by studying the t…
Modelling line emission of deuterated H_3^+ from prestellar cores
O. Sipilä, E. Hugo, J. Harju +3
Context: The depletion of heavy elements in cold cores of interstellar molecular clouds can lead to a situation where deuterated forms of H_3^+ are the most useful spectroscopic pr…
Near infrared imaging of the cometary globule CG12
Lauri K. Haikala, Bo Reipurth
Cometary globule 12 is a relatively little investigated medium- and low mass star forming region 210 pc above the Galactic plane. NIR J, H, and Ks imaging and stellar photometry is…
Influence of Ohmic diffusion on the excitation and dynamics of MRI
Maarit J. Korpi, Petri J. Käpylä, Miikka S. Väisälä
In this paper we make an effort to understand the interaction of turbulence generated by the magnetorotational instability (MRI) with turbulence from other sources, such as superno…
A Corona Australis cloud filament seen in NIR scattered light II: Comparison with sub-millimeter data
Mika Juvela, Veli-Matti Pelkonen, Sebastian Porceddu
We study a northern part of the Corona Australis molecular cloud that consists of a filament and a dense sub-millimetre core inside the filament. Our aim is to measure dust tempera…
The Super-Alfvénic Model of Molecular Clouds: Predictions for Mass-to-Flux and Turbulent-to-Magnetic Energy Ratios
Tuomas Lunttila, Paolo Padoan, Mika Juvela +1
Recent measurements of the Zeeman effect in dark-cloud cores provide important tests for theories of cloud dynamics and prestellar core formation. In this Letter we report results…