Rachael Roettenbacher

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Rachael Roettenbacher

University of Michigan Department of Astronomy
1053 Dennison Building
500 Church Street Ann Arbor, MI 48109

Office Location(s): 1053 Dennison
Phone: 734.764.3444
Fax: 734.763.6317
Research Website

  • About

    NASA Harriett G. Jenkins Predoctoral Fellowship | BA, Ohio Wesleyan University | Advisor: John Monnier

    Analysis of starspot structure and evolution

    Rachael Roettenbacher is analyzing the magnetic structure and evolution of starspots. She is observing spots caused by stifled convection (low-mass stars) and high concentrations of metals (chemically peculiar stars). Using photometry from the Kepler satellite, Roettenbacher is analyzing the changes of starspots from rotation cycle to rotation cycle on low-mass stars with short rotation periods (on the order of days). Combining ground-based photometry, high-resolution spectroscopy, and high angular resolution interferometry, she is comparing the results of light-curve inversion, Doppler, and direct imaging techniques for analysis of starspot structure and for comparison and verification of the imaging techniques. Roettenbacher hopes that this work will lead to a better understanding of starspots through improvements to stellar magnetic field theories.

    Additional Interests

    Stellar flares, exoplanets, pulsations.


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