{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:IBUITVT3JZOYXJL2D7NGG2OGL7","short_pith_number":"pith:IBUITVT3","canonical_record":{"source":{"id":"1404.3502","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-14T09:17:51Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"42da1caa619628010e408ec45bb0408e77110ca11b6a0cc17b12475d40352035","abstract_canon_sha256":"ec7d9627d82dbfbe22ebc92e77f5fab7d3c9e10a25f18977ce7bc1657218d6d6"},"schema_version":"1.0"},"canonical_sha256":"406889d67b4e5d8ba57a1fda6369c65fe8a3bc24c7a8e0f41ec49c2ba3af04f4","source":{"kind":"arxiv","id":"1404.3502","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.3502","created_at":"2026-05-18T02:48:36Z"},{"alias_kind":"arxiv_version","alias_value":"1404.3502v2","created_at":"2026-05-18T02:48:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.3502","created_at":"2026-05-18T02:48:36Z"},{"alias_kind":"pith_short_12","alias_value":"IBUITVT3JZOY","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"IBUITVT3JZOYXJL2","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"IBUITVT3","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:IBUITVT3JZOYXJL2D7NGG2OGL7","target":"record","payload":{"canonical_record":{"source":{"id":"1404.3502","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-14T09:17:51Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"42da1caa619628010e408ec45bb0408e77110ca11b6a0cc17b12475d40352035","abstract_canon_sha256":"ec7d9627d82dbfbe22ebc92e77f5fab7d3c9e10a25f18977ce7bc1657218d6d6"},"schema_version":"1.0"},"canonical_sha256":"406889d67b4e5d8ba57a1fda6369c65fe8a3bc24c7a8e0f41ec49c2ba3af04f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:36.307804Z","signature_b64":"kq6GJevlfUh1lRZ14fPGIQRsdzi66XuKGWviP/CiRof4B2Uu9u4FID/gPZW08Nf83u8hH2vUH/jsjGELSiO+Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"406889d67b4e5d8ba57a1fda6369c65fe8a3bc24c7a8e0f41ec49c2ba3af04f4","last_reissued_at":"2026-05-18T02:48:36.307127Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:36.307127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.3502","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:48:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2QPCoX5FZskuEDNzU8Ip5ZbhisyDAggyyPBxC95mbRtlKkVUigCQX9rZT645J/7nT2NZd6Wyk/sL6ukDClr5Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:22:15.920370Z"},"content_sha256":"769cdec61c778259fd11c7beb22b22a2b4da2e2180a5c15016bef0fc4f755c7c","schema_version":"1.0","event_id":"sha256:769cdec61c778259fd11c7beb22b22a2b4da2e2180a5c15016bef0fc4f755c7c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:IBUITVT3JZOYXJL2D7NGG2OGL7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Search for cool giant exoplanets around young and nearby stars - VLT/NaCo near-infrared phase-coronagraphic and differential imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"A. Boccaletti, A.-L. Maire, A.-M. Lagrange, D. Mouillet, G. Chauvin, J. Rameau, M. Bonnefoy, M. Sylvestre, P. Baudoz, R. Galicher, S. Desidera","submitted_at":"2014-04-14T09:17:51Z","abstract_excerpt":"[Abridged] Context. Spectral differential imaging (SDI) is part of the observing strategy of current and future high-contrast imaging instruments. It aims to reduce the stellar speckles that prevent the detection of cool planets by using in/out methane-band images. It attenuates the signature of off-axis companions to the star, such as angular differential imaging (ADI). However, this attenuation depends on the spectral properties of the low-mass companions we are searching for. The implications of this particularity on estimating the detection limits have been poorly explored so far. Aims. We"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.3502","kind":"arxiv","version":2},"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":"2026-05-18T02:48:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B4LKLy4ta2GEaufAHQ6TxNZ12rMeG8BBWbxDeazimxjxESti5CtVPcadr4eTNDdpUvBxs9cAqVeeKnLdG0PgCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:22:15.921075Z"},"content_sha256":"6858d15574a48e3e567f7537c3ccca48766300ed69027b9706b8057ea09077c2","schema_version":"1.0","event_id":"sha256:6858d15574a48e3e567f7537c3ccca48766300ed69027b9706b8057ea09077c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IBUITVT3JZOYXJL2D7NGG2OGL7/bundle.json","state_url":"https://pith.science/pith/IBUITVT3JZOYXJL2D7NGG2OGL7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IBUITVT3JZOYXJL2D7NGG2OGL7/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":"2026-05-26T01:22:15Z","links":{"resolver":"https://pith.science/pith/IBUITVT3JZOYXJL2D7NGG2OGL7","bundle":"https://pith.science/pith/IBUITVT3JZOYXJL2D7NGG2OGL7/bundle.json","state":"https://pith.science/pith/IBUITVT3JZOYXJL2D7NGG2OGL7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IBUITVT3JZOYXJL2D7NGG2OGL7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:IBUITVT3JZOYXJL2D7NGG2OGL7","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":"ec7d9627d82dbfbe22ebc92e77f5fab7d3c9e10a25f18977ce7bc1657218d6d6","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-14T09:17:51Z","title_canon_sha256":"42da1caa619628010e408ec45bb0408e77110ca11b6a0cc17b12475d40352035"},"schema_version":"1.0","source":{"id":"1404.3502","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.3502","created_at":"2026-05-18T02:48:36Z"},{"alias_kind":"arxiv_version","alias_value":"1404.3502v2","created_at":"2026-05-18T02:48:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.3502","created_at":"2026-05-18T02:48:36Z"},{"alias_kind":"pith_short_12","alias_value":"IBUITVT3JZOY","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"IBUITVT3JZOYXJL2","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"IBUITVT3","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:6858d15574a48e3e567f7537c3ccca48766300ed69027b9706b8057ea09077c2","target":"graph","created_at":"2026-05-18T02:48:36Z","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":"[Abridged] Context. Spectral differential imaging (SDI) is part of the observing strategy of current and future high-contrast imaging instruments. It aims to reduce the stellar speckles that prevent the detection of cool planets by using in/out methane-band images. It attenuates the signature of off-axis companions to the star, such as angular differential imaging (ADI). However, this attenuation depends on the spectral properties of the low-mass companions we are searching for. The implications of this particularity on estimating the detection limits have been poorly explored so far. Aims. We","authors_text":"A. Boccaletti, A.-L. Maire, A.-M. Lagrange, D. Mouillet, G. Chauvin, J. Rameau, M. Bonnefoy, M. Sylvestre, P. Baudoz, R. Galicher, S. Desidera","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-14T09:17:51Z","title":"Search for cool giant exoplanets around young and nearby stars - VLT/NaCo near-infrared phase-coronagraphic and differential imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.3502","kind":"arxiv","version":2},"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":"sha256:769cdec61c778259fd11c7beb22b22a2b4da2e2180a5c15016bef0fc4f755c7c","target":"record","created_at":"2026-05-18T02:48:36Z","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":"ec7d9627d82dbfbe22ebc92e77f5fab7d3c9e10a25f18977ce7bc1657218d6d6","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-04-14T09:17:51Z","title_canon_sha256":"42da1caa619628010e408ec45bb0408e77110ca11b6a0cc17b12475d40352035"},"schema_version":"1.0","source":{"id":"1404.3502","kind":"arxiv","version":2}},"canonical_sha256":"406889d67b4e5d8ba57a1fda6369c65fe8a3bc24c7a8e0f41ec49c2ba3af04f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"406889d67b4e5d8ba57a1fda6369c65fe8a3bc24c7a8e0f41ec49c2ba3af04f4","first_computed_at":"2026-05-18T02:48:36.307127Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:36.307127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kq6GJevlfUh1lRZ14fPGIQRsdzi66XuKGWviP/CiRof4B2Uu9u4FID/gPZW08Nf83u8hH2vUH/jsjGELSiO+Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:36.307804Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.3502","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:769cdec61c778259fd11c7beb22b22a2b4da2e2180a5c15016bef0fc4f755c7c","sha256:6858d15574a48e3e567f7537c3ccca48766300ed69027b9706b8057ea09077c2"],"state_sha256":"254fb6ec3e8a35acc114721dee14ffd5eaf3aebcc94419d5c014b0c8db741d63"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F4OT3hWWLoTNw9fjymm9jTZnoHvyhosN38uYCpQ5QBFVlA0j/Yv4kpkKuRBCMKhZi25K2z+rRIO6PHNCkKHTCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T01:22:15.925223Z","bundle_sha256":"a2b82601ec2b1acb7da0357636451c6074856ca0578d885144ebff88d5fbb3de"}}