CCAPP Seminar: "Transiting Planets around Hot Stars" Marshall Johnson

February 12, 2018
Tuesday, July 11, 2017 - 11:30am to 12:30pm
McPherson 4054
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The number of known transiting planets around intermediate-mass (~1.5-3 M_Sun) stars is small, as these planets are difficult to confirm using conventional techniques. Finding enough planets to statistically study the demographics of this population is nonetheless important for learning about planet formation and migration processes. I will discuss how these planets can be confirmed using the technique of Doppler tomography, highlighting recent work from the KELT survey on planets around A stars. A particularly important parameter for constraining planet migration is the alignment (or lack thereof) between the planetary orbit and the stellar rotation; enough measurements of this angle for planets around A and F stars have now accumulated that we can begin to make inferences from their distributions.

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