Where Is the Water? Jupiter-like C/H Ratio but Strong H2O Depletion Found on τ Boötis b Using SPIRou

@article{Pelletier2021WhereIT,
  title={Where Is the Water? Jupiter-like C/H Ratio but Strong H2O Depletion Found on $\tau$ Bo{\"o}tis b Using SPIRou},
  author={Stefan Pelletier and Bj{\"o}rn Benneke and Antoine Darveau-Bernier and Anne Boucher and Neil J. Cook and Caroline Piaulet and Louis-Philippe Coulombe and {\'E}tienne Artigau and David Lafreni{\'e}re and Simon Delisle and Romain Allart and Ren{\'e} Doyon and Jean-François Donati and Pascal Fouqu'e and Claire Moutou and Charles Cadieux and Xavier Delfosse and Guillaume H'ebrard and Jorge H. C. Martins and Eder Martioli and Thomas Vandal},
  journal={The Astronomical Journal},
  year={2021},
  volume={162}
}
The present-day envelope of gaseous planets is a relic of how these giant planets originated and evolved. Measuring their elemental composition therefore presents a powerful opportunity to answer long-standing questions regarding planet formation. Obtaining precise observational constraints on the elemental inventory of giant exoplanets has, however, remained challenging owing to the limited simultaneous wavelength coverage of current space-based instruments. Here, we present thermal emission… 
Characterizing Exoplanetary Atmospheres at High Resolution with SPIRou: Detection of Water on HD 189733 b
We present the first exoplanet atmospheric detection made as part of the SPIRou Legacy Survey, a Large Observing Program of 300 nights exploiting the capabilities of SPIRou, the new near-infrared
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TRIDENT: A Rapid 3D Radiative-transfer Model for Exoplanet Transmission Spectra
Transmission spectroscopy is one of the premier methods used to probe the temperature, composition, and cloud properties of exoplanet atmospheres. Recent studies have demonstrated that the
Reinvestigation of the Multiepoch Direct Detections of HD 88133 b and Upsilon Andromedae b
We reanalyze the multiepoch direct detections of HD 88133 b and ups And b that were published in Piskorz et al. (2016) and Piskorz et al. (2017), respectively. Using simulations to attempt to
Autodifferentiable Spectrum Model for High-dispersion Characterization of Exoplanets and Brown Dwarfs
We present an autodifferentiable spectral modeling of exoplanets and brown dwarfs. This model enables a fully Bayesian inference of the high-dispersion data to fit the ab initio line-by-line spectral
Interpreting the Atmospheric Composition of Exoplanets: Sensitivity to Planet Formation Assumptions
Constraining planet formation based on the atmospheric composition of exoplanets is a fundamental goal of the exoplanet community. Existing studies commonly try to constrain atmospheric abundances,
Planet Characterization: High-Resolution Spectroscopy
  • C. Lovis
  • Physics
    Encyclopedia of Astrobiology
  • 2021
A solar C/O and sub-solar metallicity in a hot Jupiter atmosphere.
TLDR
Spectroscopic observations of a typical transiting hot Jupiter, WASP-77Ab, determine the atmospheric gas volume mixing ratio constraints on both H2O and CO and derive the atmospheric C/H and O/H abundances and the corresponding atmospheric carbon-to-oxygen ratio.

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