Sarah Nymeyer

Learn More
The carbon-to-oxygen ratio (C/O) in a planet provides critical information about its primordial origins and subsequent evolution. A primordial C/O greater than 0.8 causes a carbide-dominated interior, as opposed to the silicate-dominated composition found on Earth; the atmosphere can also differ from those in the Solar System. The solar C/O is 0.54 (ref.(More)
The nearby extrasolar planet GJ 436b-which has been labelled as a 'hot Neptune'-reveals itself by the dimming of light as it crosses in front of and behind its parent star as seen from Earth. Respectively known as the primary transit and secondary eclipse, the former constrains the planet's radius and mass, and the latter constrains the planet's temperature(More)
We observe two secondary eclipses of the strongly irradiated transiting planet WASP-33b, in the Ks band at 2.15μm, and one secondary eclipse each at 3.6μm and 4.5μm using Warm Spitzer. This planet orbits an A5V δ-Scuti star that is known to exhibit low amplitude non-radial p-mode oscillations at about 0.1% semi-amplitude. We detect stellar oscillations in(More)
  • 1