{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:BLEJR73CHCZDGOUEK2GCRWPH6Y","short_pith_number":"pith:BLEJR73C","schema_version":"1.0","canonical_sha256":"0ac898ff6238b2333a84568c28d9e7f60308029291ee3c6dd41ab5413828fb32","source":{"kind":"arxiv","id":"2606.19854","version":1},"attestation_state":"computed","paper":{"title":"The Curious Case of Dark Faculae on M Dwarf Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alexander~I.~Shapiro, Krishnamurthy~Sowmya, Nadiia~Kostogryz, Robert~Cameron, Sami~K.~Solanki, Sara~Seager, Tanayveer~Bhatia, Veronika~Witzke, Yvonne~C.~Unruh","submitted_at":"2026-06-18T07:01:37Z","abstract_excerpt":"The study of exoplanet atmospheres has brought a renewed interest in stellar astrophysics. Specifically, stellar magnetic activity from the host star contaminates exoplanet atmosphere transmission spectra, as evidenced by observations from the James Webb Space Telescope. The stellar surface magnetic features in the form of dark spots caused by large concentrations of surface magnetic fields and more diffuse and extended faculae caused by small-scale magnetic field concentrations change the apparent size of the star in a wavelength-dependent way. This spot and faculae contribution to the change"},"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":"2606.19854","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-06-18T07:01:37Z","cross_cats_sorted":[],"title_canon_sha256":"a128fdd734eeb23fc9ee89ceae6ddd8438ef194d9ff30183f606c881f2bda9cf","abstract_canon_sha256":"e1dd4d7b6bac88d40672666e96c8073333f4301688868710933d7955a95ce7e6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:12:37.080968Z","signature_b64":"R7X0a5bp0W2X9p9y5E7XQQiFIfyt6uziW/pRW2SKzd4EROomJ6Rym7A2fTrkdytkdxtYdswHufNah0D3Bs9RDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ac898ff6238b2333a84568c28d9e7f60308029291ee3c6dd41ab5413828fb32","last_reissued_at":"2026-06-19T16:12:37.080562Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:12:37.080562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Curious Case of Dark Faculae on M Dwarf Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alexander~I.~Shapiro, Krishnamurthy~Sowmya, Nadiia~Kostogryz, Robert~Cameron, Sami~K.~Solanki, Sara~Seager, Tanayveer~Bhatia, Veronika~Witzke, Yvonne~C.~Unruh","submitted_at":"2026-06-18T07:01:37Z","abstract_excerpt":"The study of exoplanet atmospheres has brought a renewed interest in stellar astrophysics. Specifically, stellar magnetic activity from the host star contaminates exoplanet atmosphere transmission spectra, as evidenced by observations from the James Webb Space Telescope. The stellar surface magnetic features in the form of dark spots caused by large concentrations of surface magnetic fields and more diffuse and extended faculae caused by small-scale magnetic field concentrations change the apparent size of the star in a wavelength-dependent way. This spot and faculae contribution to the change"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19854","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/2606.19854/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":"2606.19854","created_at":"2026-06-19T16:12:37.080626+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.19854v1","created_at":"2026-06-19T16:12:37.080626+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19854","created_at":"2026-06-19T16:12:37.080626+00:00"},{"alias_kind":"pith_short_12","alias_value":"BLEJR73CHCZD","created_at":"2026-06-19T16:12:37.080626+00:00"},{"alias_kind":"pith_short_16","alias_value":"BLEJR73CHCZDGOUE","created_at":"2026-06-19T16:12:37.080626+00:00"},{"alias_kind":"pith_short_8","alias_value":"BLEJR73C","created_at":"2026-06-19T16:12:37.080626+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/BLEJR73CHCZDGOUEK2GCRWPH6Y","json":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y.json","graph_json":"https://pith.science/api/pith-number/BLEJR73CHCZDGOUEK2GCRWPH6Y/graph.json","events_json":"https://pith.science/api/pith-number/BLEJR73CHCZDGOUEK2GCRWPH6Y/events.json","paper":"https://pith.science/paper/BLEJR73C"},"agent_actions":{"view_html":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y","download_json":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y.json","view_paper":"https://pith.science/paper/BLEJR73C","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.19854&json=true","fetch_graph":"https://pith.science/api/pith-number/BLEJR73CHCZDGOUEK2GCRWPH6Y/graph.json","fetch_events":"https://pith.science/api/pith-number/BLEJR73CHCZDGOUEK2GCRWPH6Y/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y/action/storage_attestation","attest_author":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y/action/author_attestation","sign_citation":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y/action/citation_signature","submit_replication":"https://pith.science/pith/BLEJR73CHCZDGOUEK2GCRWPH6Y/action/replication_record"}},"created_at":"2026-06-19T16:12:37.080626+00:00","updated_at":"2026-06-19T16:12:37.080626+00:00"}