{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:HTYK7ONF7EWHWBVCZKMWN4CUUB","short_pith_number":"pith:HTYK7ONF","schema_version":"1.0","canonical_sha256":"3cf0afb9a5f92c7b06a2ca9966f054a05c68972db8ef274f70d2e18d7b87f962","source":{"kind":"arxiv","id":"2412.10035","version":1},"attestation_state":"computed","paper":{"title":"PAStar: a model for stellar surface from the Sun to active stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Antonino Petralia, Giuseppina Micela, Jes\\'us Maldonado","submitted_at":"2024-12-13T10:52:31Z","abstract_excerpt":"Context. The characterization of exoplanets requires a good description of the host star. Stellar activity acts as a source of noise which can alter planet radii as derived from the transit depth or atmospheric characterization. Aims. Here, we propose PAStar, a model to describe photospheric activity in the form of spots and faculae which could be applied to a wide range of stellar observations, from photometric to spectroscopic time series, to be able to correctly extract planetary and stellar properties. Methods. The adopted stellar atmosphere is a combination of three components, the quiet "},"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":"2412.10035","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-12-13T10:52:31Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM"],"title_canon_sha256":"e150265701cdf1e5ce2a4adf394a8e39560f29a2520bacd361c4f88a0948fcfb","abstract_canon_sha256":"9bdc4447758ff4255ffa2c8582937f0d3b3fb2625bee570d726c9cdbaa81419e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:09:13.483872Z","signature_b64":"JqS380d2Obqk96/QYbkHKWEeqULnBlZwbYHiQIFcSCI1cB0LlytIH9CqtrTfSXy+bJBdrFUOOGjnwsMYlGvpAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3cf0afb9a5f92c7b06a2ca9966f054a05c68972db8ef274f70d2e18d7b87f962","last_reissued_at":"2026-07-05T10:09:13.483441Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:09:13.483441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"PAStar: a model for stellar surface from the Sun to active stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Antonino Petralia, Giuseppina Micela, Jes\\'us Maldonado","submitted_at":"2024-12-13T10:52:31Z","abstract_excerpt":"Context. The characterization of exoplanets requires a good description of the host star. Stellar activity acts as a source of noise which can alter planet radii as derived from the transit depth or atmospheric characterization. Aims. Here, we propose PAStar, a model to describe photospheric activity in the form of spots and faculae which could be applied to a wide range of stellar observations, from photometric to spectroscopic time series, to be able to correctly extract planetary and stellar properties. Methods. The adopted stellar atmosphere is a combination of three components, the quiet "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.10035","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/2412.10035/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":"2412.10035","created_at":"2026-07-05T10:09:13.483498+00:00"},{"alias_kind":"arxiv_version","alias_value":"2412.10035v1","created_at":"2026-07-05T10:09:13.483498+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.10035","created_at":"2026-07-05T10:09:13.483498+00:00"},{"alias_kind":"pith_short_12","alias_value":"HTYK7ONF7EWH","created_at":"2026-07-05T10:09:13.483498+00:00"},{"alias_kind":"pith_short_16","alias_value":"HTYK7ONF7EWHWBVC","created_at":"2026-07-05T10:09:13.483498+00:00"},{"alias_kind":"pith_short_8","alias_value":"HTYK7ONF","created_at":"2026-07-05T10:09:13.483498+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/HTYK7ONF7EWHWBVCZKMWN4CUUB","json":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB.json","graph_json":"https://pith.science/api/pith-number/HTYK7ONF7EWHWBVCZKMWN4CUUB/graph.json","events_json":"https://pith.science/api/pith-number/HTYK7ONF7EWHWBVCZKMWN4CUUB/events.json","paper":"https://pith.science/paper/HTYK7ONF"},"agent_actions":{"view_html":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB","download_json":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB.json","view_paper":"https://pith.science/paper/HTYK7ONF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2412.10035&json=true","fetch_graph":"https://pith.science/api/pith-number/HTYK7ONF7EWHWBVCZKMWN4CUUB/graph.json","fetch_events":"https://pith.science/api/pith-number/HTYK7ONF7EWHWBVCZKMWN4CUUB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB/action/storage_attestation","attest_author":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB/action/author_attestation","sign_citation":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB/action/citation_signature","submit_replication":"https://pith.science/pith/HTYK7ONF7EWHWBVCZKMWN4CUUB/action/replication_record"}},"created_at":"2026-07-05T10:09:13.483498+00:00","updated_at":"2026-07-05T10:09:13.483498+00:00"}