Hα Variability in PTFO8-8695 and the Possible Direct Detection of Emission from a 2 Million Year Old Evaporating Hot Jupiter

@article{JohnsKrull2016HVI,
  title={H$\alpha$ Variability in PTFO8-8695 and the Possible Direct Detection of Emission from a 2 Million Year Old Evaporating Hot Jupiter},
  author={Christopher M. Johns–Krull and Lisa Prato and J. N. Mclane and David R. Ciardi and Julian Christopher van Eyken and Weimin Chen and John R. Stauffer and Charles A. Beichman and Sarah A. Frazier and Andrew F. Boden and M. Morales-Calder{\'o}n and Luisa M. Rebull},
  journal={The Astrophysical Journal},
  year={2016},
  volume={830},
  pages={15}
}
We use high time cadence, high spectral resolution optical observations to detect excess Hα emission from the 2–3 Myr old weak-lined T Tauri star PTFO 8-8695. This excess emission appears to move in velocity as expected if it were produced by the suspected planetary companion to this young star. The excess emission is not always present, but when it is, the predicted velocity motion is often observed. We have considered the possibility that the observed excess emission is produced by stellar… Expand
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