Speakers Calendar



skip to events

calendar tabs

  •  All 
  • Month
  • Week
  • Day
  • (Selected tab) Detail

Event Detail Information

Astronomy Colloquium - "Exoplanet Atmospheres at High-Resolution"

SpeakerJayne Birkby, NASA Sagan Fellow, Harvard-Smithsonian Center for Astrophysics
Date Oct 28, 2014
Time 3:45 pm  
Location Astronomy 134
Sponsor Department of Astronomy
Contact Rebecca Bare
Event type Seminar/Symposium
Views 63

The nearest habitable exoplanet is unlikely to transit its host star. If we are to remotely determine its prospects for habitability, we must develop techniques beyond the transit method to sniff out its atmospheric properties. Fortunately, the population of hot giant exoplanets has provided the perfect training ground for doing this. I will present the first detections of water and carbon monoxide in non-transiting exoplanet atmospheres, as well as the measurement of the length of a day on a directly imaged exoplanet. These discoveries are connected by the use of ground-based, very high-resolution spectroscopy, and I will advocate that this novel technique will be a front-runner in the hunt for biomarkers in Earth-like planets in the era of the extremely large telescopes. I will also discuss the challenges we face in exoplanet characterization, particularly with respect to the presence of clouds and the influence of the host star. Finally, I will show how measurements of an exoplanet’s atmospheric composition and rotation period have the potential to reveal exactly how and precisely where the planet formed in its protoplanetary disk.

link for robots only