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SUMMARY:Holistic Characterization of Small Planets with the Magellan-TESS 
 Survey - Johanna Teske (Carnegie)
DTSTART:20220201T130000Z
DTEND:20220201T140000Z
UID:TALK167996@talks.cam.ac.uk
CONTACT:Dr Annelies Mortier
DESCRIPTION:Recent results on the characterization of small planets have p
 resented two questions: (1) Is there a range of super-Earth and/or sub-Nep
 tune formation mechanisms? and (2) What is the precise and accurate planet
  mass-radius relation in the <3 Rearth regime? The Magellan-TESS Survey (M
 TS) is designed to address these questions in a statistically robust frame
 work\, combining transiting and radial velocity techniques to connect obse
 rved planet distributions to true underlying populations. The MTS will inc
 lude mass constraints\, host star compositions\, and system architectures 
 of 30 small planets detected by TESS across a range of insolation fluxes. 
 Its statistical robustness arises from quantifiable and uniformly applied 
 choices for transiting planet target selection and radial velocity observa
 tion cadencing\, a new feature compared to most previous follow-up surveys
 . In this talk I will (1) present the latest results from the MTS\, includ
 ing our hierarchical Bayesian modeling of the mass-radius relation\, and (
 2) discuss next steps for the survey including plans for combining it with
  atmospheric follow-up. I will also highlight an investigation into the ro
 le of sample selection on recovery of trends between planet properties tha
 t can guide future allocation of telescope time. Overall\, the MTS-style a
 pproach to population studies will become increasingly important as we mov
 e deeper into the era of exoplanet characterization where observational co
 nstraints are more technically challenging and expensive.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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