{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:PHDJZYNDJIKMSMFOWUBJ6OAD45","short_pith_number":"pith:PHDJZYND","schema_version":"1.0","canonical_sha256":"79c69ce1a34a14c930aeb5029f3803e74fc7b27415ee93f91732cb0290c9cb92","source":{"kind":"arxiv","id":"2606.30706","version":1},"attestation_state":"computed","paper":{"title":"Mapping Stellar Heterogeneities with the Nautilus Space Observatory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Adina D. Feinstein, Ana Glidden, Benjamin V. Rackham, Chia-Lung Lin, Daniel Apai, Jeff Valenti, Julien de Wit, Luis Welbanks, Noah Tuchow, Peter Plavchan, Prajwal Niraula, Valeriy Vasilyev","submitted_at":"2026-06-29T14:33:25Z","abstract_excerpt":"Stellar photospheric heterogeneities, such as starspots and faculae, are a fundamental limitation for exoplanet transmission spectroscopy. Inhomogeneous surfaces can imprint wavelength-dependent signals during transits that may mimic or mask atmospheric absorption features, especially for planets orbiting cool low-mass stars. Recent work has shown that the information content of transmission spectroscopy observations can be sufficient to correct for stellar contamination, but only if stellar photosphere and active-region models have adequate fidelity. This requires empirical benchmarking with "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.30706","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-29T14:33:25Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"title_canon_sha256":"e5a9e3b2c268842c476efdc6f491546858c2fe6446b5d5effb129130f1edb4c2","abstract_canon_sha256":"9519e61279bf7e60c6cb479af13fe5d01fad4a859a9b1633c455e9183222d165"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-01T00:17:14.045073Z","signature_b64":"y8F0s78h6vyMwj83CZQBBsM/JTyUMyZtgjS2GnZCQqtuG2arTvSH9cwwKkgSdOwhmn36IOZ1BLztFzUfMgKlAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79c69ce1a34a14c930aeb5029f3803e74fc7b27415ee93f91732cb0290c9cb92","last_reissued_at":"2026-07-01T00:17:14.044688Z","signature_status":"signed_v1","first_computed_at":"2026-07-01T00:17:14.044688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Mapping Stellar Heterogeneities with the Nautilus Space Observatory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Adina D. Feinstein, Ana Glidden, Benjamin V. Rackham, Chia-Lung Lin, Daniel Apai, Jeff Valenti, Julien de Wit, Luis Welbanks, Noah Tuchow, Peter Plavchan, Prajwal Niraula, Valeriy Vasilyev","submitted_at":"2026-06-29T14:33:25Z","abstract_excerpt":"Stellar photospheric heterogeneities, such as starspots and faculae, are a fundamental limitation for exoplanet transmission spectroscopy. Inhomogeneous surfaces can imprint wavelength-dependent signals during transits that may mimic or mask atmospheric absorption features, especially for planets orbiting cool low-mass stars. Recent work has shown that the information content of transmission spectroscopy observations can be sufficient to correct for stellar contamination, but only if stellar photosphere and active-region models have adequate fidelity. This requires empirical benchmarking with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.30706","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.30706/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.30706","created_at":"2026-07-01T00:17:14.044743+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.30706v1","created_at":"2026-07-01T00:17:14.044743+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.30706","created_at":"2026-07-01T00:17:14.044743+00:00"},{"alias_kind":"pith_short_12","alias_value":"PHDJZYNDJIKM","created_at":"2026-07-01T00:17:14.044743+00:00"},{"alias_kind":"pith_short_16","alias_value":"PHDJZYNDJIKMSMFO","created_at":"2026-07-01T00:17:14.044743+00:00"},{"alias_kind":"pith_short_8","alias_value":"PHDJZYND","created_at":"2026-07-01T00:17:14.044743+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45","json":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45.json","graph_json":"https://pith.science/api/pith-number/PHDJZYNDJIKMSMFOWUBJ6OAD45/graph.json","events_json":"https://pith.science/api/pith-number/PHDJZYNDJIKMSMFOWUBJ6OAD45/events.json","paper":"https://pith.science/paper/PHDJZYND"},"agent_actions":{"view_html":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45","download_json":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45.json","view_paper":"https://pith.science/paper/PHDJZYND","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.30706&json=true","fetch_graph":"https://pith.science/api/pith-number/PHDJZYNDJIKMSMFOWUBJ6OAD45/graph.json","fetch_events":"https://pith.science/api/pith-number/PHDJZYNDJIKMSMFOWUBJ6OAD45/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45/action/storage_attestation","attest_author":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45/action/author_attestation","sign_citation":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45/action/citation_signature","submit_replication":"https://pith.science/pith/PHDJZYNDJIKMSMFOWUBJ6OAD45/action/replication_record"}},"created_at":"2026-07-01T00:17:14.044743+00:00","updated_at":"2026-07-01T00:17:14.044743+00:00"}