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SUMMARY:Influence of Stellar UV Environment on Detecting Biosignatures and
  Pre-Biosignatures in the Atmospheres of Earth-like Planets Around Other S
 tars - Sarah Rugheimer (Oxford)
DTSTART:20190205T160000Z
DTEND:20190205T170000Z
UID:TALK118732@talks.cam.ac.uk
CONTACT:Richard Booth
DESCRIPTION:When we observe the first terrestrial exoplanet atmospheres\, 
 we expect to find planets around a wide range of stellar types\, UV enviro
 nments\, and geological conditions. Since the first exoplanets available f
 or characterization will be likely for M dwarf host stars\, understanding 
 the UV environment of these cool stars is a vital step in understanding th
 e atmospheres of these planets. Additionally the atmospheres of these plan
 ets will not been fixed in time. Earth itself offers many possible atmosph
 eric states of a planet. We set out to examine how an Earth-like planet at
  different geological epochs might look around other star types Additional
 ly\, we examine the plausibility of detecting prebiotically interesting mo
 lecules\, such as HCN\, NH3\, CH4\, and C2H6 in an early-Earth type atmosp
 here around stars with very different UV environments\, an M dwarf and a s
 olar analogue. 
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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