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

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July 11, 2017
11:30AM - 12:30PM
Location
McPherson 4054

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Add to Calendar 2017-07-11 11:30:00 2017-07-11 12:30:00 CCAPP Seminar: "Transiting Planets around Hot Stars" Marshall Johnson 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. McPherson 4054 Center for Cosmology and AstroParticle Physics (CCAPP) ccapp@osu.edu America/New_York public
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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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