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Erin Guilfoil Cox


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  • Dust Polarization in Star Formation
  • Evolution of protoplanetarty disks
  • High resolution imaging of protoplanets
  • Grain growth in disks

Research Description

At the moment my research is focused on using polarization data from the VLA and ALMA to infer the magnetic field around Class 0 objects. These are the youngest, most embedded protostars and until recently it has been near impossible to probe the very inner regions (~50 AU) of these sources. I am classifying the morphology of these fields at disk sized scales to test the theory that disks can only grow at these young stages if the magnetic field is either weak, or misaligned with the rotation axis of the protostar. Using this data, I plan to start modeling the disks in two-dimensions, giving us an idea of the vertical structure of these disks. This will be done using the Class 0 protostars and also in more evolved, Class II systems.


  • B.S., Physics/ Astronomy, University of Arizona, 2012

Distinctions / Awards


  • Illinois Space Grant Consortium Fellowship (2015-2016)
  • NRAO Student Observing Support Award (2016-2017)


Journal Articles

  • Cox, Erin G., Robert J. Harris, Leslie Looney, Dominique Segura-Cox, John Tobin, Zhi-Yun Li, Ɓukasz Tychoniec, Claire Chandler, Michael Dunham, Kaitlin Kratter, Carl Melis, Laura Perez, and Sarah Sadavoy. "High-resolution 8 mm and 1 cm Polarization of IRAS 4A from the VLA Nascent Disk and Multiplicity (VANDAM) Survey." The Astrophysical Journal Letters 814.2 (2015): L28.