Atmospheric dynamics and chemistry of ultra-hot Jupiter WASP-189 b

Paper Title:

Time-resolved transmission spectroscopy of the ultra-hot Jupiter WASP-189 b

Published on:

8 August 2023

Primary Category:

Earth and Planetary Astrophysics

Paper Authors:

Bibiana Prinoth,

H. Jens Hoeijmakers,

Stefan Pelletier,

Daniel Kitzmann,

Brett M. Morris,

Andreas Seifahrt,

David Kasper,

Heidi H. Korhonen,

Madeleine Burheim,

Jacob L. Bean,

Björn Benneke,

Nicholas W. Borsato,

Madison Brady,

Simon L. Grimm,

Rafael Luque,

Julian Stürmer,

Brian Thorsbro

Bullets

Key Details

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Combines 8 transit observations with HARPS, HARPS-N, ESPRESSO & MAROON-X

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Detects 17 species including first Sr, Sr+ & Ba+, confirms TiO

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Studies signal evolution during transit using time-resolved spectroscopy

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Finds signatures of ionization, dissociation & atmospheric dynamics

Explore the topics in this paper

atmospheric composition

exoplanets

hot jupiters

transmission spectroscopy

wasp-189b

AI generated summary

Atmospheric dynamics and chemistry of ultra-hot Jupiter WASP-189 b

This paper presents a combined analysis of eight transit observations of the ultra-hot Jupiter WASP-189 b using high-resolution spectroscopy. It detects 17 chemical species in the planet's atmosphere, including first detections of Sr, Sr+ and Ba+, and confirms TiO. By studying how the absorption signals change over the course of the transit as different regions rotate into view, the authors find evidence for ionization, dissociation and atmospheric dynamics shaping the transmission spectrum.