Weather on Other Worlds. V. The Three Most Rapidly Rotating Ultra-cool Dwarfs

@article{Tannock2021WeatherOO,
  title={Weather on Other Worlds. V. The Three Most Rapidly Rotating Ultra-cool Dwarfs},
  author={Megan E. Tannock and Stanimir A. Metchev and Aren N. Heinze and Paulo A. Miles-P'aez and Jonathan Gagn'e and Adam J. Burgasser and Mark. S. Marley and D{\'a}niel Apai and Genaro Su{\'a}rez and Peter P. Plavchan},
  journal={The Astronomical Journal},
  year={2021},
  volume={161}
}
We present the discovery of rapid photometric variability in three ultra-cool dwarfs from long-duration monitoring with the Spitzer Space Telescope. The T7, L3.5, and L8 dwarfs have the shortest photometric periods known to date: hr, hr, and hr, respectively. We confirm the rapid rotation through moderate-resolution infrared spectroscopy, which reveals projected rotational velocities between 79 and 104 km s−1. We compare the near-infrared spectra to photospheric models to determine the objects… 
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