{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:N77TUJPF5BU2SQY7ACY66PQFHF","short_pith_number":"pith:N77TUJPF","schema_version":"1.0","canonical_sha256":"6fff3a25e5e869a9431f00b1ef3e053956bb2a14ce19f6b372984c4d03841cf9","source":{"kind":"arxiv","id":"0909.1752","version":1},"attestation_state":"computed","paper":{"title":"Transit Lightcurves of Extrasolar Planets Orbiting Rapidly-Rotating Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Jason W. Barnes","submitted_at":"2009-09-09T17:28:47Z","abstract_excerpt":"Main-sequence stars earlier than spectral type ~F6 or so are expected to rotate rapidly due to their radiative exteriors. This rapid rotation leads to an oblate stellar figure. It also induces the photosphere to be hotter (by up to several thousand Kelvin) at the pole than at the equator as a result of a process called gravity darkening that was first predicted by von Zeipel (1924). Transits of extrasolar planets across such a non-uniform, oblate disk yield unusual and distinctive lightcurves that can be used to determine the relative alignment of the stellar rotation pole and the planet orbit"},"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":"0909.1752","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-09-09T17:28:47Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"de0e9ac5be057a62c74e341a4a916bce132bbad47c84c94833d668b14cb20431","abstract_canon_sha256":"153d8b42c1c89a8df7ddedc0124aae41fe8e5475a723155822d4b7e734ea8ab3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:30.630893Z","signature_b64":"poSs8Uc4P9FfL07oR9ii9p7b6jAeFNBmoM3Wh6qlzlhOf7PsY0QRksp3eTCmPYklz7GarIdaTMf3y6wx5UCVAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6fff3a25e5e869a9431f00b1ef3e053956bb2a14ce19f6b372984c4d03841cf9","last_reissued_at":"2026-05-18T02:34:30.630526Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:30.630526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Transit Lightcurves of Extrasolar Planets Orbiting Rapidly-Rotating Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Jason W. Barnes","submitted_at":"2009-09-09T17:28:47Z","abstract_excerpt":"Main-sequence stars earlier than spectral type ~F6 or so are expected to rotate rapidly due to their radiative exteriors. This rapid rotation leads to an oblate stellar figure. It also induces the photosphere to be hotter (by up to several thousand Kelvin) at the pole than at the equator as a result of a process called gravity darkening that was first predicted by von Zeipel (1924). Transits of extrasolar planets across such a non-uniform, oblate disk yield unusual and distinctive lightcurves that can be used to determine the relative alignment of the stellar rotation pole and the planet orbit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.1752","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":""},"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":"0909.1752","created_at":"2026-05-18T02:34:30.630581+00:00"},{"alias_kind":"arxiv_version","alias_value":"0909.1752v1","created_at":"2026-05-18T02:34:30.630581+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.1752","created_at":"2026-05-18T02:34:30.630581+00:00"},{"alias_kind":"pith_short_12","alias_value":"N77TUJPF5BU2","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_16","alias_value":"N77TUJPF5BU2SQY7","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_8","alias_value":"N77TUJPF","created_at":"2026-05-18T12:26:00.592388+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/N77TUJPF5BU2SQY7ACY66PQFHF","json":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF.json","graph_json":"https://pith.science/api/pith-number/N77TUJPF5BU2SQY7ACY66PQFHF/graph.json","events_json":"https://pith.science/api/pith-number/N77TUJPF5BU2SQY7ACY66PQFHF/events.json","paper":"https://pith.science/paper/N77TUJPF"},"agent_actions":{"view_html":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF","download_json":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF.json","view_paper":"https://pith.science/paper/N77TUJPF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0909.1752&json=true","fetch_graph":"https://pith.science/api/pith-number/N77TUJPF5BU2SQY7ACY66PQFHF/graph.json","fetch_events":"https://pith.science/api/pith-number/N77TUJPF5BU2SQY7ACY66PQFHF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF/action/storage_attestation","attest_author":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF/action/author_attestation","sign_citation":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF/action/citation_signature","submit_replication":"https://pith.science/pith/N77TUJPF5BU2SQY7ACY66PQFHF/action/replication_record"}},"created_at":"2026-05-18T02:34:30.630581+00:00","updated_at":"2026-05-18T02:34:30.630581+00:00"}