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SUMMARY:Gaussian Processes and Physical stellar properties  - Belinda Nich
 olson (Oxford)
DTSTART:20220531T120000Z
DTEND:20220531T130000Z
UID:TALK172967@talks.cam.ac.uk
CONTACT:Dr Annelies Mortier
DESCRIPTION:Gaussian Process (GP) regression has become an increasing popu
 lar data analysis tool in stellar and exoplanet astronomy\, yet questions 
 remain as to the extent to which GP hyper-paramters relate to physical ste
 llar properties. In this seminar I will present the results of tests of GP
  regression with the quasi periodic (QP) and QP cosine kernels on simulate
 d stellar lightcurves and radial velocity times series\, with the aim of d
 etermining the correlation\, if any\, between physical properties of a sta
 r\, and the recovered GP hyper-parameters. I also explore the differences 
 in the recovered QP GP hyper-parameters between light curve data and 'perf
 ectly' sampled radial velocity data\, as well as examining the effects of 
 degrading radial velocity time sampling on recovering the same GP hyper-pa
 rameters.\n\n
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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