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July 10, 2024Astronomy and AstrophysicsOpen Access

The atmospheric composition of the ultra-hot Jupiter WASP-178 b observed with ESPRESSO

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Authors

YDY. C. DamascenoJSJ. V. SeidelBPB. Prinoth

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Overview

Transmission spectroscopy reveals neutral and ionized metals in WASP-178 b, indicating possible atmospheric escape and weak upper-atmospheric dynamics.

Key Points

  • Atmospheric absorption signatures of iron, sodium, and hydrogen characterize the ultra-hot Jupiter WASP-178 b without rest-frame velocity shifts.
  • Narrow-band transmission spectroscopy detects Fe I at 12 σ and Fe II at 11 σ significance, alongside notable Balmer line broadening.
  • Highlights that the planetary atmospheric composition is likely dominated by atomic iron rather than silicate clouds, though stellar variability warrants study.

Cite This Study

Damasceno et al. (2024) studied this question.

synapsesocial.com/papers/68e60be9b6db64358759eb3chttps://doi.org/10.1051/0004-6361/202450119
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Also Consider

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  1. 1The atmospheric composition of the ultra-hot Jupiter WASP-178 b observed with ESPRESSO2024 · 14 citations
  2. 2The obliquity and atmosphere of the hot Jupiter WASP-122b (KELT-14b) with ESPRESSO: An aligned orbit and no sign of atomic or molecular absorption2024 · 2 citations
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  4. 4CRIRES+ reduced spectroscopic observations of WASP-1782024 · 1 citations
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