# Observed Variability at 1 and 4 μm in the Y0 Brown Dwarf WISEP J173835.52+273258.9

@article{Leggett2016ObservedVA,
title={Observed Variability at 1 and 4 $\mu$m in the Y0 Brown Dwarf WISEP J173835.52+273258.9},
author={S. K. Leggett and Michael C. Cushing and Kevin K. Hardegree-Ullman and Jesica L. Trucks and Mark S. Marley and Caroline V. Morley and Didier Saumon and Sean Carey and Jonathan J. Fortney and Christopher Ryan Gelino and John Gizis and J. Davy Kirkpatrick and Gregory N. Mace},
journal={The Astrophysical Journal},
year={2016},
volume={830},
pages={141}
}
We have monitored photometrically the Y0 brown dwarf WISEP J173835.52+273258.9 (W1738) at both near- and mid-infrared wavelengths. This ≾ 1 Gyr old 400 K dwarf is at a distance of 8 pc and has a mass around 5 M Jupiter. We observed W1738 using two near-infrared filters at λ ≈ 1 μm, Y and J, on Gemini Observatory and two mid-infrared filters at λ ≈ 4 μm, [3.6] and [4.5], on the Spitzer observatory. Twenty-four hours were spent on the source by Spitzer on each of 2013 June 30 and October 30 UT… Expand

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