{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XHPMDMFW63TYPRJEBKWXPR3UMU","short_pith_number":"pith:XHPMDMFW","canonical_record":{"source":{"id":"1905.03844","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-09T20:49:44Z","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"title_canon_sha256":"1ba278aeccbc758ddc2d13f76bad29e849df99d8c5f1dd5d6bdf0f278de7897a","abstract_canon_sha256":"44028c51b0f1aecbd1c25885109928bb147dd3ae2999dad57e2eb91a4419c4e7"},"schema_version":"1.0"},"canonical_sha256":"b9dec1b0b6f6e787c5240aad77c7746525f0c25067b8160f20a7327d4a78724a","source":{"kind":"arxiv","id":"1905.03844","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.03844","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1905.03844v1","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.03844","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"XHPMDMFW63TY","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XHPMDMFW63TYPRJE","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XHPMDMFW","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XHPMDMFW63TYPRJEBKWXPR3UMU","target":"record","payload":{"canonical_record":{"source":{"id":"1905.03844","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-09T20:49:44Z","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"title_canon_sha256":"1ba278aeccbc758ddc2d13f76bad29e849df99d8c5f1dd5d6bdf0f278de7897a","abstract_canon_sha256":"44028c51b0f1aecbd1c25885109928bb147dd3ae2999dad57e2eb91a4419c4e7"},"schema_version":"1.0"},"canonical_sha256":"b9dec1b0b6f6e787c5240aad77c7746525f0c25067b8160f20a7327d4a78724a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:19.178217Z","signature_b64":"LivfA2Z4yvjPse6bBn3n+Rslp6JAa9U+y8GMEkHLr48lCpz1Ne3b2AQ5j13sJV+FiWSWPzQre2JeuFvfTFhDBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9dec1b0b6f6e787c5240aad77c7746525f0c25067b8160f20a7327d4a78724a","last_reissued_at":"2026-05-17T23:42:19.177825Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:19.177825Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.03844","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ewhqU2reA9HudXYJYQIw2tsqCXjB5mFkuA6rjeFkZF/eMJM6Yyaen0ukBNHBZjn949ZcSBk3D2GCKAE7rsm9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T07:31:30.889627Z"},"content_sha256":"6ecef445e896b3eea133890499d0a331763026976090584891eebb38ff99161f","schema_version":"1.0","event_id":"sha256:6ecef445e896b3eea133890499d0a331763026976090584891eebb38ff99161f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XHPMDMFW63TYPRJEBKWXPR3UMU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modelling the Spatial Distribution and Origin of CO Gas in Debris Disks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Antonio Hales, John Carpenter, Kevin Flaherty, Meredith Hughes, Uma Gorti","submitted_at":"2019-05-09T20:49:44Z","abstract_excerpt":"The detection of gas in debris disks raises the question of whether this gas is a remnant from the primordial protoplanetary phase, or released by the collision of secondary bodies. In this paper we analyze ALMA observations at 1-1.5\" resolution of three debris disks where the $^{12}$CO(2-1) rotational line was detected: HD131835, HD138813, and HD156623. We apply the iterative Lucy-Richardson deconvolution technique to the problem of circumstellar disks to derive disk geometries and surface brightness distributions of the gas. The derived disk parameters are used as input for thermochemical mo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.03844","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m9Vq+wxCe/HTz3FRON6ZLn6LhWacIrTOm18zVX02V4PKktxsa+ntxBMQnGBStRECQ+LIyXp7PN2V83zbSDZSBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T07:31:30.889974Z"},"content_sha256":"e947fcdc22e8c16179c50d0a8dc445f5a67efdd11dade65bb7768fdb1d9d4255","schema_version":"1.0","event_id":"sha256:e947fcdc22e8c16179c50d0a8dc445f5a67efdd11dade65bb7768fdb1d9d4255"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XHPMDMFW63TYPRJEBKWXPR3UMU/bundle.json","state_url":"https://pith.science/pith/XHPMDMFW63TYPRJEBKWXPR3UMU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XHPMDMFW63TYPRJEBKWXPR3UMU/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":"2026-06-02T07:31:30Z","links":{"resolver":"https://pith.science/pith/XHPMDMFW63TYPRJEBKWXPR3UMU","bundle":"https://pith.science/pith/XHPMDMFW63TYPRJEBKWXPR3UMU/bundle.json","state":"https://pith.science/pith/XHPMDMFW63TYPRJEBKWXPR3UMU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XHPMDMFW63TYPRJEBKWXPR3UMU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XHPMDMFW63TYPRJEBKWXPR3UMU","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":"44028c51b0f1aecbd1c25885109928bb147dd3ae2999dad57e2eb91a4419c4e7","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-09T20:49:44Z","title_canon_sha256":"1ba278aeccbc758ddc2d13f76bad29e849df99d8c5f1dd5d6bdf0f278de7897a"},"schema_version":"1.0","source":{"id":"1905.03844","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.03844","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1905.03844v1","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.03844","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"XHPMDMFW63TY","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XHPMDMFW63TYPRJE","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XHPMDMFW","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:e947fcdc22e8c16179c50d0a8dc445f5a67efdd11dade65bb7768fdb1d9d4255","target":"graph","created_at":"2026-05-17T23:42:19Z","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":"The detection of gas in debris disks raises the question of whether this gas is a remnant from the primordial protoplanetary phase, or released by the collision of secondary bodies. In this paper we analyze ALMA observations at 1-1.5\" resolution of three debris disks where the $^{12}$CO(2-1) rotational line was detected: HD131835, HD138813, and HD156623. We apply the iterative Lucy-Richardson deconvolution technique to the problem of circumstellar disks to derive disk geometries and surface brightness distributions of the gas. The derived disk parameters are used as input for thermochemical mo","authors_text":"Antonio Hales, John Carpenter, Kevin Flaherty, Meredith Hughes, Uma Gorti","cross_cats":["astro-ph.EP","astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-09T20:49:44Z","title":"Modelling the Spatial Distribution and Origin of CO Gas in Debris Disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.03844","kind":"arxiv","version":1},"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":"sha256:6ecef445e896b3eea133890499d0a331763026976090584891eebb38ff99161f","target":"record","created_at":"2026-05-17T23:42:19Z","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":"44028c51b0f1aecbd1c25885109928bb147dd3ae2999dad57e2eb91a4419c4e7","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-09T20:49:44Z","title_canon_sha256":"1ba278aeccbc758ddc2d13f76bad29e849df99d8c5f1dd5d6bdf0f278de7897a"},"schema_version":"1.0","source":{"id":"1905.03844","kind":"arxiv","version":1}},"canonical_sha256":"b9dec1b0b6f6e787c5240aad77c7746525f0c25067b8160f20a7327d4a78724a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9dec1b0b6f6e787c5240aad77c7746525f0c25067b8160f20a7327d4a78724a","first_computed_at":"2026-05-17T23:42:19.177825Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:19.177825Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LivfA2Z4yvjPse6bBn3n+Rslp6JAa9U+y8GMEkHLr48lCpz1Ne3b2AQ5j13sJV+FiWSWPzQre2JeuFvfTFhDBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:19.178217Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.03844","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ecef445e896b3eea133890499d0a331763026976090584891eebb38ff99161f","sha256:e947fcdc22e8c16179c50d0a8dc445f5a67efdd11dade65bb7768fdb1d9d4255"],"state_sha256":"b83dbceec2e2c3c7be4840d9475d93cc3b74c5fe0b136937d45a71d50024aa98"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OXw/7KgxewG76p6L5z+CbvbOu4MBpy04hUari5O0UvM6cphY2Js3W2ZVc09MyPnWvw+btRr4ATKR7vPwfOGFBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T07:31:30.892067Z","bundle_sha256":"e8bcf7aa7939cedbfc50fca1b1b6a083a9b684953d95856578afa33e295dcde7"}}