Research, Alice Quillen

Feedback, Turbulence and Winds

We find that models previously used to model biological systems can be used to predict when star formation is episodic rather than self-limiting. Outflows when they expand leave large but slow moving relic cavities that provide clues about the past evolution of outflows and may be responsible for turbulence in molecular clouds. Exoplanet winds have structure related to atmospheric circulation!

Does an evaporative wind exert a torque on an exoplanet? (yes) But more importantly asymmetries in winds might be used to constrain atmospheric circulation. With Jean! Torque on an exoplanet from an anisotropic evaporative wind , arxiv
An elegant and simple 2 parameter model that predicts when star formation is episodic rather than self-limiting (with Joss), When is star formation episodic? A delay differential equation negative feedback model , PDF
On interpreting cavities in molecular clouds as relics of outflows. And how turbulence can be driven in molecular clouds with outflow driven cavities, Turbulence driven by outflow-blown cavities in the molecular cloud of NGC1333 , PDF

The NGC 1333 movie of the 13CO channel maps (with velocity shown on upper right) help illustrate that the molecular cloud is permeated by expanding cavities. This movie was created from Naomi Ridge's CO survey.
More on cavities (Andy's simulations!), Outflow-driven Cavities: Numerical Simulations of Intermediaries of Protostellar Turbulence Also see Jonathan Carroll's papers!
Outflows are predicted to order of magnitude from forming Jovian planets, Do Proto-jovian Planets Drive Outflows? When David Trilling and I wrote this paper our idea that planets might drive an outflow was novel. Some recent numerical studies predict that ALMA should be able to detect Proto-Jovian outflows.