NOAO >   Observing Info >   Approved Programs >   2011B-0199

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Proposal Information for 2011B-0199


PI: Joshua Pepper, Vanderbilt University, joshua.pepper.v@gmail.com
Address: Physics Department, 6301 Stevenson Center, Nashville, TN 37235, United States

CoI: Keivan Stassun, Vanderbilt University
CoI: Lucianne Walkowicz, University of California at Berkeley

Title: Identifying Photometric and Chromospheric Activity Correlations of Kepler Stars

Abstract: The recent public release of lightcurves from the Kepler mission provides the first opportunity for investigating the intrinsic photometric variability of large numbers of stars. Since most such variability is believed to be due to starspots related to magnetic activity, we intend to test that hypothesis by obtaining chromospheric observations of stellar activity with Ca II H and K emission for select Kepler stars. We will compare overall photometric variability with R^'_HK for all stars, and test whether the magnitude of the variability or its periodicity correlates with stellar activity for a range of spectral types on the main sequence. This analysis will inform theories of stellar evolution and activity, improve the efficiency of planet detection around active stars, and constrain theories of planet formation and disk dispersal.


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NOAO >   Observing Info >   Approved Programs >   2011B-0199

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