Katja Poppenhaeger

I am a postdoctoral researcher at the Harvard-Smithsonian Center for Astrophysics. I am interested in the high-energy environment of exoplanets, how X-rays and UV photons impact the planetary atmosphere, and how close-in planets can influence their host star's magnetic properties. In my research, I use high-energy data from space telescopes as well as high-resolution optical spectra from ground-based observatories to learn more about exoplanetary systems.

You can take a look at my CV here.

Lecture notes for "Planets around other suns" can be downloaded here: Feb 04 2013, Feb 11 2013.

• Poppenhaeger, K., Günther, H.M., Beiersdorfer, P., Brickhouse, N.S., Carter, J.A., Hudson, H.S., Kowalski, A., Lalitha, S., Miceli, M., Wolk, S.J., "Non-thermal processes in coronae and beyond", 2013, AN Volume 334, 1-2, 101; ADS link; pdf
• Poppenhaeger, K.; Czesla, S., Schröter, S., Lalitha, S., Kashyap, V., and Schmitt, J.H.M.M., "The high-energy environment in the super-earth system CoRoT-7", 2012, A&A Volume 541, A26, ADS link; pdf
• Poppenhaeger, K.; Günther, M., Schmitt, J. H. M. M., "A magnetic cycle of tau Bootis? The coronal and chromospheric view", 2012, AN 333, 1, 26; ADS link; pdf
• Poppenhaeger, K.; Schmitt, J. H. M. M., "A correlation between host star activity and planet mass for close-in extrasolar planets?", 2011, ApJ Volume 735, Issue 1, id.59; ADS link; pdf
• Fuhrmeister, B.; Lalitha, S.; Poppenhaeger, K.; Rudolf, N.; Liefke, C.; Reiners, A.; Schmitt, J.H.M.M.; Ness, J.-U., "Multi-wavelength observations of Proxima Centauri", 2011, A&A 534, id.A133; ADS link; pdf
• Poppenhaeger, K.; Schmitt, J. H. M. M., "Star-planet interactions and selection effects from planet detection methods", 2011, AN 332, 9/10, 1052; ADS link; pdf
• Poppenhaeger, K.; Lenz, L. F.; Reiners, A.; Schmitt, J. H. M. M.; Shkolnik, E., "A search for Star-Planet-Interactions in the upsilon Andromedae system at X-ray and optical wavelengths", 2011, A&A Volume 528, id.A58; ADS link; pdf
• Poppenhaeger, K.; Robrade, J.; Schmitt, J. H. M. M., "Coronal properties of planet-bearing stars", 2010, A&A Volume 515, id.A98; ADS link
• Robrade, J.; Poppenhaeger, K.; Schmitt, J. H. M. M., "Quiescent and flaring X-ray emission from the nearby M/T dwarf binary SCR 1845-6357", 2009, A&A Volume 513, id.A12; ADS link; pdf
• Poppenhäger, K.; Robrade, J.; Schmitt, J. H. M. M.; Hall, J. C., "51 Pegasi - a planet-bearing Maunder minimum candidate", 2009, A&A Volume 508, Issue 3, pp.1417-1421; ADS link; pdf

• Invited talks:
• "How to X-ray an exoplanet", AIP Colloquium, Albert Einstein Institute Potsdam, Germany, January 10 2013
• "Exoplanets and their host stars - the X-ray view", ESAC Faculty Seminar, Madrid, Spain, June 21 2012
• "Star-Planet Interactions: coronal and chromospheric observations", Second CoRoT Symposium, Marseille, France, June 17 2011
• Other talks:
• "Exoplanet transits in X-rays - a new observational window to exoplanetary atmospheres", MPIA Visitor Colloquium, Heidelberg, Germany, January 13 2013
• "Exoplanetary X-ray transits", CfA Postdoc Symposium 2012, Cambridge, USA, November 5 2012
• "Soft X-ray emission as diagnostics for Maunder minimum stars", IAU Symposium 286 on comparative magnetic minima, Mendoza, Argentina, October 06 2011
• "Star-planet interactions - mimicked by selection effects?", 7th Potsdam Thinkshop on magnetic fields in stars and exoplanets, Potsdam, Germany, August 25 2011
• "Star-Planet Interactions in X-rays - an elusive target", Cool Stars 16 conference, Seattle, USA, August 30 2010