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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-8442
DTSTART:20231019T203000Z
DTEND:20231019T213000Z
DTSTAMP:20260414T051707Z
LAST-MODIFIED:20230929T145952Z
LOCATION:4421 Sterling Hall
SUMMARY:Uncovering Hidden Worlds: Challenges and Statistical Solutions
  in Detecting Low-Mass Exoplanets Amidst Stellar Activity\, Astronomy 
 Colloquium\, Jessi Cisewski-Kehe\, University of Wisconsin - Madison
DESCRIPTION:Thousands of exoplanets have been discovered contributing 
 to an improved understanding of our universe.  However\, a critical c
 hallenge remains related to the limited number of low-massed exoplanet
  detections.  When a planet has a low mass (akin to the mass of the E
 arth or lower)\, the small signal is difficult to detect. Furthermore\
 , stellar activity may hide a planetary signal or mimic a planetary si
 gnal leading to false detections.   <br>\n<br>\nThough a variety of 
 methods have been developed to address these challenges\, a sufficient
  and general methodology to uncover the population of low-mass exoplan
 ets is not available.  During this presentation\, I plan to discuss t
 he statistical challenge in the detection of low-mass exoplanets in th
 e presence of stellar activity using extreme precision radial velocity
  spectra and introduce statistical methodology that has potential to a
 ddress this challenge by focusing on absorption line modeling. <br>\n
 <br>\nGeneral comments about the field of astrostatistics will also be
  made\, along with a possible brief discussion on topological data ana
 lysis and its relevance to astronomy.<br>\n
URL:https://www.physics.wisc.edu/events/?id=8442
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