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A Comparison of Near-Infrared Photometry and Spectra for Y Dwarfs with a New Generation of Cool Cloudy Models
S. K. Leggett, Caroline V. Morley, M. S. Marley +3
We present YJHK photometry, or a subset, for the six Y dwarfs discovered in WISE data by Cushing et al.. The data were obtained using NIRI on the Gemini North telescope. We also pr…
Chemical consequences of the C/O ratio on hot Jupiters: Examples from WASP-12b,CoRoT-2b, XO-1b, and HD 189733b
J. I. Moses, N. Madhusudhan, C. Visscher +1
Motivated by recent spectroscopic evidence for carbon-rich atmospheres on some transiting exoplanets, we investigate the influence of the C/O ratio on the chemistry, composition, a…
Neglected Clouds in T and Y Dwarf Atmospheres
Caroline V. Morley, Jonathan J. Fortney, Mark S. Marley +3
As brown dwarfs cool, a variety of species condense in their atmospheres, forming clouds. Iron and silicate clouds shape the emergent spectra of L dwarfs, but these clouds dissipat…
Two nearby sub-Earth-sized exoplanet candidates in the GJ 436 system
Kevin B. Stevenson, Joseph Harrington, Nate B. Lust +8
We report the detection of UCF-1.01, a strong exoplanet candidate with a radius 0.66 +/- 0.04 times that of Earth (R_{\oplus}). This sub-Earth-sized planet transits the nearby M-dw…
Chemical Timescales in the Atmospheres of Highly Eccentric Exoplanets
Channon Visscher
Close-in exoplanets with highly eccentric orbits are subject to large variations in incoming stellar flux between periapse and apoapse. These variations may lead to large swings in…