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Radiative Stellar Feedback in Galaxy Formation: Methods and Physics
Philip F. Hopkins, Michael Y. Grudic, Andrew R. Wetzel +5
Radiative feedback (RFB) from stars plays a key role in galaxies, but remains poorly-understood. We explore this using high-resolution, multi-frequency radiation-hydrodynamics (RHD…
On The Nature of Variations in the Measured Star Formation Efficiency of Molecular Clouds
Michael Y. Grudić, Philip F. Hopkins, Eve J. Lee +3
Measurements of the star formation efficiency (SFE) of giant molecular clouds (GMCs) in the Milky Way generally show a large scatter, which could be intrinsic or observational. We…
The Elephant in the Room: The Importance of Where and When Massive Stars Form in Molecular Clouds
Michael Y. Grudić, Philip F. Hopkins
Most simulations of galaxies and massive giant molecular clouds (GMCs) cannot explicitly resolve the formation (or predict the main-sequence masses) of individual stars. So they mu…
The Maximum Stellar Surface Density Due to the Failure of Stellar Feedback
Michael Y. Grudić, Philip F. Hopkins, Eliot Quataert +1
A maximum stellar surface density is observed across all classes of dense stellar systems (e.g. star clusters, galactic nuclei,…
Isothermal Fragmentation: Is there a low-mass cut-off?
David Guszejnov, Philip F. Hopkins, Michael Y. Grudic +2
The evolution of self-gravitating clouds of isothermal gas forms the basis of many star formation theories. Therefore it is important to know under what conditions such a cloud wil…
Numerical Problems in Coupling Photon Momentum (Radiation Pressure) to Gas
P. F. Hopkins, M. Y. Grudic
Radiation pressure (RP; or photon momentum absorbed by gas) is important in a tremendous range of astrophysical systems. But we show the usual method for assigning absorbed photon…