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SUMMARY:Understanding the stars in our search for another Earth - Annelies
  Mortier (Cambridge)
DTSTART:20220614T120000Z
DTEND:20220614T130000Z
UID:TALK175586@talks.cam.ac.uk
CONTACT:Dr Annelies Mortier
DESCRIPTION:To understand exoplanetary systems\, we can study their mass-r
 adius relationship or lack thereof. The HARPS-N Collaboration has been lea
 ding the efforts to fill and interpret the mass-radius diagram of small pl
 anets by combining space photometry\, Gaia astrometry and radial velocitie
 s. Determining a precise as-well-as accurate planet mass can only be deter
 mined with well-sampled\, stable\, and precise observations combined with 
 advanced computational efforts and new extraction and processing technique
 s. The biggest challenge remains the stellar activity processes\, mimickin
 g and hiding planetary signals. With the HARPS-N Collaboration\, we have b
 een studying the Sun-as-a-star for 6 years\, providing a dataset where we 
 truly have no planetary signals and can study stellar behaviour in more de
 tail. \nIn this talk\, I will give an overview on the leading efforts of o
 ur collaboration to fill the mass-radius diagram\, an insight in new LSD-b
 ased processing techniques\, and the behaviour over time of the standard a
 ctivity indicators using Solar data.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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