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CATEGORIES:Exoplanet Seminars
SUMMARY:Understanding the stars in our search for another 
 Earth - Annelies Mortier (Cambridge)
DTSTART;TZID=Europe/London:20220614T130000
DTEND;TZID=Europe/London:20220614T140000
UID:TALK175586AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/175586
DESCRIPTION:To understand exoplanetary systems\, we can study 
 their mass-radius relationship or lack thereof. Th
 e HARPS-N Collaboration has been leading the effor
 ts to fill and interpret the mass-radius diagram o
 f small planets by combining space photometry\, Ga
 ia astrometry and radial velocities. Determining a
  precise as-well-as accurate planet mass can only 
 be determined with well-sampled\, stable\, and pre
 cise observations combined with advanced computati
 onal efforts and new extraction and processing tec
 hniques. The biggest challenge remains the stellar
  activity processes\, mimicking and hiding planeta
 ry signals. With the HARPS-N Collaboration\, we ha
 ve been studying the Sun-as-a-star for 6 years\, p
 roviding a dataset where we truly have no planetar
 y signals and can study stellar behaviour in more 
 detail. \nIn this talk\, I will give an overview o
 n the leading efforts of our collaboration to fill
  the mass-radius diagram\, an insight in new LSD-b
 ased processing techniques\, and the behaviour ove
 r time of the standard activity indicators using S
 olar data.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by
  email
CONTACT:Dr Annelies Mortier
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