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Y. Heidi Yoon
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Project: Spectroscopic studies of Titan particlesHeidi Yoon is working in Margaret Tolbert’s group characterizing the optical properties of the aerosol particles in the atmosphere of Saturn’s moon Titan. She will use spectroscopy to study how laboratory analogs of the particles absorb and scatter different wavelengths of light. The aerosol particles in Titan’s atmosphere form a hydrocarbon haze that affects the moon’s surface and air temperatures. These particles absorb most of the incident sunlight—keeping it from reaching the surface—but weakly absorb infrared radiation, allowing thermal heat to escape. Both properties cool the moon’s surface. Recent work has suggested that early Earth may have had a Titan-like haze, so characterizing the optical properties of that haze is essential for understanding both Titan and early Earth. Yoon is looking forward to tackling this microscopic puzzle. “I enjoy how spectroscopy can surprise you,” she says. “Observing how light interacts with molecules can reveal many hidden properties and structures.” While in Boulder, Colorado—the farthest west that Yoon has lived—she plans to hike, snowshoe, and experience the local music scene, especially jazz, alternative rock, and indie pop. Sponsor: Margaret Tolbert |
