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The Abundance and Emission of H2O and O2 in Clumpy Molecular Clouds
Marco Spaans, Ewine van Dishoeck
Recent observations with the Submillimeter Wave Astronomy Satellite indicate abundances of gaseous H2O and O2 in dense molecular clouds which are significantly lower than found in…
Formation of Cavities, Filaments, and Clumps by the Non-linear Development of Thermal and Gravitational Instabilities in the Interstellar Medium under Stellar Feedback
Keiichi Wada, Marco Spaans, Sungeun Kim
Based on our high resolution, two-dimensional hydrodynamical simulations, we propose that large cavities may be formed by the nonlinear development of the combined thermal and grav…
Lyman Alpha Cooling Radiation from High-Redshift Halos
Zoltan Haiman, Marco Spaans, Eliot Quataert
The baryons inside high-redshift halos with virial temperatures above T=10^4 K cool radiatively as they condense inside dark matter potential wells. We show that the release of the…
The Polytropic Equation of State of Interstellar Gas Clouds
Marco Spaans, Joseph Silk
Models are presented for the polytropic equation of state of self-gravitating, quiescent interstellar gas clouds. A detailed analysis, including chemistry, thermal balance, and rad…