DETECTION OF H2O AND EVIDENCE FOR TiO/VO IN AN ULTRA-HOT EXOPLANET ATMOSPHERE

@article{Evans2016DETECTIONOH,
  title={DETECTION OF H2O AND EVIDENCE FOR TiO/VO IN AN ULTRA-HOT EXOPLANET ATMOSPHERE},
  author={Thomas M. Evans and David K. Sing and Hannah R. Wakeford and Nikolay Nikolov and Gilda E. Ballester and Benjamin Drummond and Tiffany Kataria and Neale P. Gibson and David S. Amundsen and Jessica J Spake},
  journal={The Astrophysical Journal Letters},
  year={2016},
  volume={822}
}
We present a primary transit observation for the ultra-hot (Teq ∼ 2400 K) gas giant expolanet WASP-121b, made using the Hubble Space Telescope Wide Field Camera 3 in spectroscopic mode across the 1.12–1.64 μm wavelength range. The 1.4 μm water absorption band is detected at high confidence (5.4σ) in the planetary atmosphere. We also reanalyze ground-based photometric light curves taken in the B, r′, and z′ filters. Significantly deeper transits are measured in these optical bandpasses relative… 

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