Heat Reveals What Clouds Conceal: Global Carbon and Longitudinally Asymmetric Chemistry on LTT 9779 b

LTT 9779 b is an ultra-hot Neptune ( R _p  ≈ 4.7 R _⊕ , M _p  ≈ 29 M _⊕ ) orbiting its Sun-like host star in just 19 hr, placing it deep within the “hot-Neptune desert,” where Neptunian planets are seldom found. We present new James Webb Space Telescope NIRSpec G395H phase curve observations that pr...

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Autori principali:	Reza Ashtari, Sean Collins, Jared Splinter, Kevin B. Stevenson, Vivien Parmentier, Jonathan Brande, Suman Saha, Sarah Stamer, Ian J. M. Crossfield, James S. Jenkins, K. Angelique Kahle, Joshua D. Lothringer, Nishil Mehta, Nicolas B. Cowan, Diana Dragomir, Laura Kreidberg, Mercedes López-Morales, Thomas M. Evans-Soma, Emma Esparza-Borges, Megan Weiner Mansfield, Hayley Beltz, Tansu Daylan, Olivia Venot, Jason Pero, Xi Zhang
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	IOP Publishing 2026-01-01
Serie:	The Astronomical Journal
Soggetti:	Hot Neptunes Infrared spectroscopy Exoplanet atmospheres
Accesso online:	https://doi.org/10.3847/1538-3881/ae4494
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