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SUMMARY:Planets in a Bottle: The Role of Laboratory Experiments in the Sea
 rch for Life - Sarah Hörst (Johns Hopkins University)
DTSTART:20220222T130000Z
DTEND:20220222T140000Z
UID:TALK168077@talks.cam.ac.uk
CONTACT:Paul B. Rimmer
DESCRIPTION:From exoplanets\, with their surprising lack of spectral featu
 res\, to Titan and its characteristic haze layer\, numerous planetary atmo
 spheres may possess photochemically produced particles of "haze".  With fe
 w exceptions\, we lack strong observational constraints (in situ or remote
  sensing) on the size\, shape\, density\, and composition of these particl
 es. Photochemical models\, which can generally explain the observed abunda
 nces of smaller\, gas phase molecules\, are not well suited for investigat
 ions of much larger\, solid phase particles. Laboratory investigations of 
 haze formation in planetary atmospheres therefore play a key role in impro
 ving our understanding of the formation and composition of haze particles.
  I will discuss a series of experiments aimed at improving our understandi
 ng of the physical and chemical properties of planetary atmospheric hazes 
 for a wide range of exoplanets including super-Earths\, and mini-Neptunes 
 and how we hope to use our results to aid in the search for life.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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