Meredith A. MacGregor
NSF Postdoctoral Fellow
Debris disks; Circumstellar disk structure and evolution; Planetary system formation; Radio interferometry; Aperture synthesis techniques
B.A., Astronomy and Astrophysics, Physics, Harvard University (2011)
M.A., Astronomy and Astrophysics, Harvard University (2013)
Ph.D., Astronomy and Astrophysics (2017)
MacGregor was awarded an NSF Astronomy and Astrophysics Postdoctoral Fellowship to pursue a program of research and education at the Carnegie's Department of Terrestrial Magnetism. At DTM, she conducts an in-depth study of debris disks as probes of planetary system evolution by leveraging the multi-wavelength capabilities that the Atacama Large Millimeter Array (ALMA) interferometer and NASA's James Webb Space Telescope (JWST) will provide.
With ALMA, MacGregor will perform a comparative study of debris disk structure around nearby stars, allowing her to address the basic dynamical processes that control the evolution of debris disks and their interactions with planets. Combining observations from both ALMA and JWST will allow her to examine radial variations in grain composition within disks, identify connections between grain composition and gas content, and search for possible evidence of dynamical evolution.