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SUMMARY:New Frontiers in Exoplanet Characterization - Jayne Birkby (Univer
 sity of Amsterdam)
DTSTART:20171019T150000Z
DTEND:20171019T160000Z
UID:TALK83711@talks.cam.ac.uk
CONTACT:Simon Hodgkin
DESCRIPTION:Exoplanet characterization is undergoing a rapid evolution\, e
 specially in the study of exoplanet atmospheres. I will discuss the very l
 atest results from both space and ground-based observations and highlight 
 how they are helping us to understand exoplanet origins and diversity. I w
 ill focus part of my talk on high-resolution spectroscopy\, which is a rob
 ust and powerful tool in exoplanet characterization. It uses changes in th
 e Doppler shift of a planet to disentangle its spectrum from the glare of 
 its host star. The technique is sensitive to the depth\, shape\, and posit
 ion of a planet’s spectral lines\, and thus reveals information about th
 e planet’s composition\, atmospheric structure\, mass\, global wind patt
 erns\, and rotation. I will present MEASURE: the MMT Exoplanet Atmosphere 
 SURvEy. This 40 night survey is the largest high-resolution study of exopl
 anet atmospheres to date. It contains spectra of exoplanets from hot Jupit
 ers to warm Neptunes\, both transiting and non-transiting\, observing both
  their dayside and nightside thermal emission. I will describe the survey 
 and present some of its exciting preliminary results. The survey not only 
 enables a homogenous dataset to perform comparative exoplanetology\, but p
 rovides complementary high-resolution spectra for exoplanets observed with
  HST and Spitzer. The combination of high- and low-resolution spectroscopy
  can provide stringent constraints on planet metallicity and C/O ratios\, 
 and signifies the next step in the detailed characterization of exoplanet 
 atmospheres.
LOCATION:Sackler Lecture Theatre\, IoA (tea at 3:30 pm)
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