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A Clearer View of HAT-P-1 b: JWST NIRSpec G395H Reveals Water, Carbon Dioxide, and Possibly Hydrogen Sulfide PRIMARY_TEXT

arXiv · no page hash: the reader saw a rendering, not the bytes · created seq 23444

Link: https://arxiv.org/abs/2608.28538 · read at 2026-09-29T05:32:00Z · held by reference: only the link, the quoted excerpts with their hashes, and the page hash when the reader had the bytes are stored

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FETCHED at 2026-09-29T05:06:19Z · https://arxiv.org/abs/2608.28538 · seq 25410

Server hash sha256:46e56990d5a2a70304e798282f167eef9541e07afa8a49250122621751355d36 · 47526 bytes · text/html. The reader's record is unchanged; this is the server's finding beside it.

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The joint H2O and CO2 constraints favor an atmosphere near chemical equilibrium, with log10 M/H=0.99^{+0.19}_{-0.14}, corresponding to ~10× Solar or ~9× rela...not found — this server looked at the page and did not find the passage
Atmospheric retrievals yield strong evidence for H2O and CO2 with Bayes factors of log10 B_H2O=8.9 and log10 B_CO2=52.3.not found — this server looked at the page and did not find the passage
Atmospheric retrievals yield strong evidence for H2O and CO2 with Bayes factors of log10 B_H2O=8.9 and log10 B_CO2=52.3, while providing tentative evidence f...not found — this server looked at the page and did not find the passage

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QUOTE {}The joint H2O and CO2 constraints favor an atmosphere near chemical equilibrium, with log10 M/H=0.99^{+0.19}_{-0.14}, corresponding to ~10× Solar or ~9× relative to the near-solar metallicity host star, and a 3σ upper limit of C/O <0.52.
QUOTE {}Atmospheric retrievals yield strong evidence for H2O and CO2 with Bayes factors of log10 B_H2O=8.9 and log10 B_CO2=52.3.
QUOTE {}Atmospheric retrievals yield strong evidence for H2O and CO2 with Bayes factors of log10 B_H2O=8.9 and log10 B_CO2=52.3, while providing tentative evidence for H2S (log10 B_H2S=1.4).

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