{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TMEKE3S566MWCL2SXVNCNCQG3X","short_pith_number":"pith:TMEKE3S5","canonical_record":{"source":{"id":"1503.07020","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-03-24T13:00:10Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"52d6f457db4d580efddb6788a7e62312071d31c94772acc7d24eece18227eefd","abstract_canon_sha256":"33eada5ef6959dd21fe3c2b1b801c43cdf9a8d15a8bc91ffd7bd88a895fbc967"},"schema_version":"1.0"},"canonical_sha256":"9b08a26e5df799612f52bd5a268a06dddec439e83ada2552cbd22fb8f184f362","source":{"kind":"arxiv","id":"1503.07020","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07020","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07020v3","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07020","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"pith_short_12","alias_value":"TMEKE3S566MW","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TMEKE3S566MWCL2S","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TMEKE3S5","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TMEKE3S566MWCL2SXVNCNCQG3X","target":"record","payload":{"canonical_record":{"source":{"id":"1503.07020","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-03-24T13:00:10Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"52d6f457db4d580efddb6788a7e62312071d31c94772acc7d24eece18227eefd","abstract_canon_sha256":"33eada5ef6959dd21fe3c2b1b801c43cdf9a8d15a8bc91ffd7bd88a895fbc967"},"schema_version":"1.0"},"canonical_sha256":"9b08a26e5df799612f52bd5a268a06dddec439e83ada2552cbd22fb8f184f362","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:21.426377Z","signature_b64":"Xoaz91h7ViIdwVyFvVe8XSwBMAUsZ543QHYP+fTR3nNGz2s6il8Tuz2Bo3e2h94U+w7t37aB5NdxKQKrCK0GAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b08a26e5df799612f52bd5a268a06dddec439e83ada2552cbd22fb8f184f362","last_reissued_at":"2026-05-18T02:17:21.425691Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:21.425691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.07020","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:17:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b8oj1+X+M5MxsSkjzWRyX/QmVZD3bwoYAPVo21JUGXZ76vcydeU7mkRflg2jh8ANOYsRUbIfXeV7jcGfDMW7DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T12:35:39.858057Z"},"content_sha256":"774a803cbe7d795ab1497136db895f110bfb142da8372c44dd686ca16191d557","schema_version":"1.0","event_id":"sha256:774a803cbe7d795ab1497136db895f110bfb142da8372c44dd686ca16191d557"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TMEKE3S566MWCL2SXVNCNCQG3X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Limb darkening and exoplanets: testing stellar model atmospheres and identifying biases in transit parameters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Andr\\'es Jord\\'an, N\\'estor Espinoza","submitted_at":"2015-03-24T13:00:10Z","abstract_excerpt":"Limb-darkening is fundamental in determining transit lightcurve shapes, and is typically modeled by a variety of laws that parametrize the intensity profile of the star that is being transited. Confronted with a transit lightcurve, some authors fix the parameters of these laws, the so-called limb-darkening coefficients (LDCs), while others prefer to let them float in the lightcurve fitting procedure. Which of these is the best strategy, however, is still unclear, as well as how and by how much each of these can bias the retrieved transit parameters. In this work we attempt to clarify those poi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07020","kind":"arxiv","version":3},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:17:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tl6tjOac/ddszasOOEMM+Bx9hfdDSnITngLOD+vk38hHGXNzHXwtVNhbSVKZVQ0dEdvL4kO9Qt9MpuoreM4pCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T12:35:39.858410Z"},"content_sha256":"badb183cae2043cdd805d1f295ce8f8219e3fd4d3fa83326a6455033f8a135bc","schema_version":"1.0","event_id":"sha256:badb183cae2043cdd805d1f295ce8f8219e3fd4d3fa83326a6455033f8a135bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TMEKE3S566MWCL2SXVNCNCQG3X/bundle.json","state_url":"https://pith.science/pith/TMEKE3S566MWCL2SXVNCNCQG3X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TMEKE3S566MWCL2SXVNCNCQG3X/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-09T12:35:39Z","links":{"resolver":"https://pith.science/pith/TMEKE3S566MWCL2SXVNCNCQG3X","bundle":"https://pith.science/pith/TMEKE3S566MWCL2SXVNCNCQG3X/bundle.json","state":"https://pith.science/pith/TMEKE3S566MWCL2SXVNCNCQG3X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TMEKE3S566MWCL2SXVNCNCQG3X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TMEKE3S566MWCL2SXVNCNCQG3X","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"33eada5ef6959dd21fe3c2b1b801c43cdf9a8d15a8bc91ffd7bd88a895fbc967","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-03-24T13:00:10Z","title_canon_sha256":"52d6f457db4d580efddb6788a7e62312071d31c94772acc7d24eece18227eefd"},"schema_version":"1.0","source":{"id":"1503.07020","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07020","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07020v3","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07020","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"pith_short_12","alias_value":"TMEKE3S566MW","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TMEKE3S566MWCL2S","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TMEKE3S5","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:badb183cae2043cdd805d1f295ce8f8219e3fd4d3fa83326a6455033f8a135bc","target":"graph","created_at":"2026-05-18T02:17:21Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Limb-darkening is fundamental in determining transit lightcurve shapes, and is typically modeled by a variety of laws that parametrize the intensity profile of the star that is being transited. Confronted with a transit lightcurve, some authors fix the parameters of these laws, the so-called limb-darkening coefficients (LDCs), while others prefer to let them float in the lightcurve fitting procedure. Which of these is the best strategy, however, is still unclear, as well as how and by how much each of these can bias the retrieved transit parameters. In this work we attempt to clarify those poi","authors_text":"Andr\\'es Jord\\'an, N\\'estor Espinoza","cross_cats":["astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-03-24T13:00:10Z","title":"Limb darkening and exoplanets: testing stellar model atmospheres and identifying biases in transit parameters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07020","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:774a803cbe7d795ab1497136db895f110bfb142da8372c44dd686ca16191d557","target":"record","created_at":"2026-05-18T02:17:21Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"33eada5ef6959dd21fe3c2b1b801c43cdf9a8d15a8bc91ffd7bd88a895fbc967","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-03-24T13:00:10Z","title_canon_sha256":"52d6f457db4d580efddb6788a7e62312071d31c94772acc7d24eece18227eefd"},"schema_version":"1.0","source":{"id":"1503.07020","kind":"arxiv","version":3}},"canonical_sha256":"9b08a26e5df799612f52bd5a268a06dddec439e83ada2552cbd22fb8f184f362","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b08a26e5df799612f52bd5a268a06dddec439e83ada2552cbd22fb8f184f362","first_computed_at":"2026-05-18T02:17:21.425691Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:21.425691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xoaz91h7ViIdwVyFvVe8XSwBMAUsZ543QHYP+fTR3nNGz2s6il8Tuz2Bo3e2h94U+w7t37aB5NdxKQKrCK0GAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:21.426377Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.07020","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:774a803cbe7d795ab1497136db895f110bfb142da8372c44dd686ca16191d557","sha256:badb183cae2043cdd805d1f295ce8f8219e3fd4d3fa83326a6455033f8a135bc"],"state_sha256":"7b1625ee7762b409805275e9a087944b7cd8bf0de5d9f4a3dd183ceb59250f1b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RBljJ5UJrNnJ0cbQOMF5477ye5ORhlMpqszWOr/G+Q5BQ+9sLdvFVw8oatGgLoAfrz9yDFKPamHsKGG9cwotDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T12:35:39.860288Z","bundle_sha256":"b45543a935b47b1855150472997cc9dd3a81149beecf6dffe0c25c365a4da960"}}