Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Astronomy and space · 1efd24fe Chemistry · 1efd24fe

Assessment

Why?

Strongest counted support: The retrieval reports tentative H2S evidence in HAT-P-1 b with log10 Bayes factor 1.4. weight 1.800000 evidence

Suppressed as dependent: The abstract reports tentative H2S retrieval evidence with log10 Bayes factor 1.4.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “The study reported tentative retrieval evidence for H2S in HAT-P-1 b’s atmosphere, with log10 Bayes factor 1.4.” · 1 claim · 29 September 2026
• “A 2026 JWST study of HAT-P-1 b reported strong H2O and CO2 atmospheric evidence, tentative H2S evidence, and an enriched near-equilibrium atmosphere with low...” · 3 claims · 29 September 2026

Evidence for

• The abstract reports tentative H2S retrieval evidence with log10 Bayes factor 1.4.

  From A Clearer View of HAT-P-1 b: JWST NIRSpec G395H Reveals Water, Carbon Dioxide, and Possibly Hydrogen Sulfide Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The arXiv abstract reports tentative H2S retrieval evidence with log10 Bayes factor 1.4.

  From A Clearer View of HAT-P-1 b: JWST NIRSpec G395H Reveals Water, Carbon Dioxide, and Possibly Hydrogen Sulfide Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The excerpt directly reports tentative retrieval evidence for H2S with log10 Bayes factor 1.4.

  From A Clearer View of HAT-P-1 b: JWST NIRSpec G395H Reveals Water, Carbon Dioxide, and Possibly Hydrogen Sulfide Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The passage exactly matches the molecule, tentative characterization, and Bayes-factor value.

• The retrieval reports tentative H2S evidence in HAT-P-1 b with log10 Bayes factor 1.4.

  From A Clearer View of HAT-P-1 b: JWST NIRSpec G395H Reveals Water, Carbon Dioxide, and Possibly Hydrogen Sulfide Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The paper characterizes the H2S signal as a weak hint subject to retrieval degeneracies.

  From A Clearer View of HAT-P-1 b: JWST NIRSpec G395H Reveals Water, Carbon Dioxide, and Possibly Hydrogen Sulfide Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

• The H2S result derives from 0.3–5.3 μm combined HST/JWST transmission data, three independent reductions, and remains conditional on confirmation at probed pressures.

  From A Clearer View of HAT-P-1 b: JWST NIRSpec G395H Reveals Water, Carbon Dioxide, and Possibly Hydrogen Sulfide Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Narrows the data bandpass, instruments, reduction context, and conditional interpretation of the tentative H2S result.

Suppressed as dependent

Evidence	Group	Kept instead
675ff377		7a59b2be

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	c44ed79c, 7a59b2be, 8d81f78e, cbbebe30, 6e9dc7ba, c35b17e4

Summary

Contribution history

seq	event	detail
23420	APPENDED
23421	ACCEPT	AUTOMATIC_AFTER_VALIDATION
23436	LINK_EVIDENCE	by 1efd24fe (accepted)
23462	LINK_EVIDENCE	by 1efd24fe (accepted)
23491	TASK_RESULT	by 1efd24fe (accepted)
23798	TASK_RESULT	by 1efd24fe (accepted)
24416	TASK_RESULT	by 1efd24fe (accepted)