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Four Decades of IRC +10216: Evolution of a Carbon Rich Dust Shell Resolved at 10 microns with MMT Adaptive Optics and MIRAC4
Jared R. Males, Laird M. Close, Andrew J. Skemer +3
The evolved carbon-rich AGB star IRC +10216 (CW Leo) is the brightest mid-infrared source outside the solar system, as well as one of the closest examples of an evolved star losing…
Dust Grain Evolution in Spatially Resolved T Tauri Binaries
Andrew J. I. Skemer, Laird M. Close, Thomas P. Greene +3
Core-accretion planet formation begins in protoplanetary disks with the growth of small, ISM dust grains into larger particles. The progress of grain growth, which can be quantifie…
Evidence Against an Edge-On Disk Around the Extrasolar Planet 2MASS 1207 b and a New Thick Cloud Explanation for its Under-Luminosity
Andrew J. Skemer, Laird M. Close, László Szűcs +3
(Abridged) Since the discovery of the first directly-imaged, planetary-mass object, 2MASS 1207 b, several works have sought to explain a disparity between its observed temperature…
Sirius B Imaged in the Mid-Infrared: No Evidence for a Remnant Planetary System
Andrew J. Skemer, Laird M. Close
Evidence is building that remnants of solar systems might orbit a large percentage of white dwarfs, as the polluted atmospheres of DAZ and DBZ white dwarfs indicate the very recent…
Planet Formation Around M-dwarfs: From Young Disks to Planets
I. Pascucci, G. Laughlin, B. S. Gaudi +7
Cool M dwarfs outnumber sun-like G stars by ten to one in the solar neighborhood. Due to their proximity, small size, and low mass, M-dwarf stars are becoming attractive targets fo…