Thermal properties of ultra-hot Jupiter WASP-121b
Paper Title:
Spitzer thermal phase curve of WASP-121 b
Published on:
2 July 2023
Primary Category:
Earth and Planetary Astrophysics
Paper Authors:
Giuseppe Morello,
Quentin Changeat,
Achrène Dyrek,
Pierre-Olivier Lagage,
Jonathan C. Tan
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Key Details
Measures dayside and nightside temperatures of ∼2700 K and ∼700-1100 K for WASP-121b
Suggests inefficient heat redistribution in the planet's atmosphere
Detects a rare westward hot spot offset in the thermal phase curves
Compares results with more precise JWST observations in similar bands
Demonstrates usefulness of Spitzer data despite strong systematics
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AI generated summary
Thermal properties of ultra-hot Jupiter WASP-121b
This paper analyzes unpublished Spitzer observations to measure the dayside and nightside temperatures of the ultra-hot Jupiter WASP-121b. The analysis overcomes strong instrumental effects and finds inefficient heat redistribution in the planet's atmosphere. It also detects an unusual westward hot spot and compares results with more precise JWST data.
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