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 Exoplanet Discovery and Science (3262): People
Yan  Betremieux's Picture
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Yan Betremieux

Yan Bétrémieux grew up for the most part in Montreal, Canada, where he studied physics at the undergraduate level at McGill University. He received his PhD from the astronomy department at Boston University for his work on Raman scattering in Jupiter’s atmosphere, before moving on to instrumentation in both academia and the private sector. He entered the field of exoplanet science in 2011 as a postdoctoral researcher at the Max-Planck Institute for Astronomy in Heidelberg, Germany, where he developed his idea for the effects of refraction on exoplanet transmission spectra. He joined JPL in December 2015, as an NPP Fellow, continuing his investigation of what shapes exoplanet transmission spectra.

  • Ph.D., Astronomy, Boston University (2000)
  • M.S., Astronomy, Boston University (1995)
  • B.Sc., Honors in Physics, McGill University (1992)

Research Interests
  • Effects of molecular absorption, Rayleigh scattering, clouds, and refraction on exoplanet transmission spectra
  • Radiative-transfer modeling of (exo)planetary atmospheres
  • Chemistry and dynamics of (exo)planetary atmospheres
  • Search for bio-signatures in exoplanets

Professional Experience
  • Research scientist, Jet Propulsion Laboratory, (2017-present)
  • NASA Postdoctoral Fellow, Jet Propulsion Laboratory (2015-2017)
  • Postdoctoral Researcher, Max-Planck Institute for Astronomy (2011-2015)
  • Postdoctoral Research Associate, University of California, Davis (2008-2011)
  • Staff Scientist, Scientific Solutions Inc., North Chelmsford (2000-2005)
  • Postdoctoral Research Associate, Northern Arizona University (2000)
  • Research and Teaching Assistant, Boston University (1992-2000)

Selected Awards
  • NASA Postdoctoral Fellowship (2015-2017)
  • Canada Scholarship (1989,1990)

Selected Publications
  1. Y. Bétrémieux & M. R. Swain 2017, “An analytical formalism accounting for clouds and other ‘surfaces’ for exoplanet transmission spectroscopy”, MNRAS, 467, 2834
  2. Y. Bétrémieux 2016, “Effects of refraction on transmission spectra of gas giants: decrease of the Rayleigh scattering slope and breaking of retrieval degeneracies”, MNRAS, 456, 4051
  3. Y. Bétrémieux & L. Kaltenegger 2015, “Refraction in planetary atmospheres: improved analytical expressions and comparison with a new ray tracing algorithm”, MNRAS, 451, 1268
  4. Y. Bétrémieux & L. Kaltenegger 2014, “Impact of atmospheric refraction: How deeply can we probe exo-Earth's atmospheres during primary eclipse observations?”, ApJ, 791, 7
  5. Y. Bétrémieux & L. Kaltenegger 2013, “Transmission spectrum of Earth as a transiting exoplanet from the ultraviolet to the near-infrared”, ApJ, 772, L31
  6. Y. Bétrémieux, R. V. Yelle & C. A. Griffith, 2003 “HST observation of the atmospheric composition of Jupiter's equatorial region: Evidence for tropospheric C2H2”, Icarus 163, 414-427
  7. Y. Bétrémieux & R. V. Yelle 1999, “HST detection of H2 Raman scattering in the Jovian atmosphere”, Icarus 142, 324-341

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