JWST phase curves of ZTFJ0038+2030 show inefficient heat redistribution (<10%) and nightside CO2 asymmetry in a tidally locked brown dwarf, yielding a system age of 7.5-8.8 Gyr and low common-envelope ejection efficiency.
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JWST MIRI/LRS data combined with archival observations detect magnesium silicate clouds (likely Mg2SiO4) in HD 209458b at 1-10 mbar with ~0.1 micron particles using a new rule-based data reduction approach.
Circulation models show equatorial jet strength most strongly alters Doppler shifts at ingress and egress, linearly affects mid-transit slope (secondary to rotation), and increases cross-correlation function width.
CARMApy provides a Python interface to the ExoCARMA microphysics code, enabling simulation of cloud particle size distributions and rates in exoplanet atmospheres with claimed consistency to prior versions and speed gains of 1.9x single-threaded and 3.8x multithreaded.
citing papers explorer
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Asymmetric nightside CO2 features, inefficient heat transport, and precise evolutionary constraints: Spectroscopic phase curves reveal the past and present of a white dwarf-brown dwarf binary
JWST phase curves of ZTFJ0038+2030 show inefficient heat redistribution (<10%) and nightside CO2 asymmetry in a tidally locked brown dwarf, yielding a system age of 7.5-8.8 Gyr and low common-envelope ejection efficiency.
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Magnesium Silicate Clouds in the Atmosphere of HD 209458b from a Rule-Based Tree-Structured Data Reduction
JWST MIRI/LRS data combined with archival observations detect magnesium silicate clouds (likely Mg2SiO4) in HD 209458b at 1-10 mbar with ~0.1 micron particles using a new rule-based data reduction approach.