![Graham Harper](/casa/sites/default/files/styles/small/public/people/graham_harper_casa_portrait.cc084.jpg?itok=7FhPaWV9)
Senior Research Associate
Center for Astrophysics and Space Astronomy
University of Colorado
389 UCB
Boulder, Colorado 80309-0389
My research centers on the rich phenomena that occur in the outer atmospheresÌý
of cool stars, with a focus on the mysterious processes by which mass isÌý
ejected from red giant and supergiant stars. I use physics-based approachesÌý
to analysis large multi-wavelength data-sets (from radio waves, mid-IR, allÌý
the way through to the far-ultraviolet) which we have obtained fromÌý
ground and space based observatories. I specialize in spectral lineÌý
formation and radiative transfer to extract the maximize information from
high-resolution spectroscopy. Currently I am constructing
the first detailed semi-empirical atmospheric models,Ìý
from the photosphere to the circumstellar envelope, of supernova progenitorsÌý
like Betelgeuse and Antares.
Ìý
I also have a deep interest in evidence-based approaches to university science
education.