{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:JZN7HFTW4JD3CLWLRVFZWYCD5R","short_pith_number":"pith:JZN7HFTW","canonical_record":{"source":{"id":"0906.3699","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-19T15:39:42Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"3d94a236c0b84a1365d5e641e37408f753a1cb4f1bd6a4140b477c0f5bbe5f0f","abstract_canon_sha256":"8691ce90c013bd11fb34344e1ed5e51e68a43a6ffc01300e7b0f040bcd9842cd"},"schema_version":"1.0"},"canonical_sha256":"4e5bf39676e247b12ecb8d4b9b6043ec7ead1c00f63c5140b6d59c7088914940","source":{"kind":"arxiv","id":"0906.3699","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.3699","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"arxiv_version","alias_value":"0906.3699v1","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.3699","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"pith_short_12","alias_value":"JZN7HFTW4JD3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"JZN7HFTW4JD3CLWL","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"JZN7HFTW","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:JZN7HFTW4JD3CLWLRVFZWYCD5R","target":"record","payload":{"canonical_record":{"source":{"id":"0906.3699","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-19T15:39:42Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"3d94a236c0b84a1365d5e641e37408f753a1cb4f1bd6a4140b477c0f5bbe5f0f","abstract_canon_sha256":"8691ce90c013bd11fb34344e1ed5e51e68a43a6ffc01300e7b0f040bcd9842cd"},"schema_version":"1.0"},"canonical_sha256":"4e5bf39676e247b12ecb8d4b9b6043ec7ead1c00f63c5140b6d59c7088914940","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:18.699129Z","signature_b64":"QXpRVvD27Bd0HqUf4ML0Nkk6vjbLvGxoB1tt+auhiPqngeVZLFazEW1VNnW8bsb2Pojvkib8c32NGBpU7eCtBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e5bf39676e247b12ecb8d4b9b6043ec7ead1c00f63c5140b6d59c7088914940","last_reissued_at":"2026-05-18T02:13:18.698561Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:18.698561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.3699","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":"2026-05-18T02:13:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SeRjcPjlIi7vhTTOXBw6+7N4HXe7vi48yNx/eZVVJWZHJ1oTLnTskUDfe72jx0hl1BvypFlV5CKffc0WYATGCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:43:40.592982Z"},"content_sha256":"25ae797d16f362de6a83dfe01c8b3461802a09e22389a2d621456364d53cdcac","schema_version":"1.0","event_id":"sha256:25ae797d16f362de6a83dfe01c8b3461802a09e22389a2d621456364d53cdcac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:JZN7HFTW4JD3CLWLRVFZWYCD5R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The photodissociation and chemistry of CO isotopologues: applications to interstellar clouds and circumstellar disks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"2), (2) MPE Garching, (3) Onsala Space Observatory), E.F. van Dishoeck (1, J.H. Black (3) ((1) Leiden Observatory, R. Visser (1)","submitted_at":"2009-06-19T15:39:42Z","abstract_excerpt":"Aims. Photodissociation by UV light is an important destruction mechanism for CO in many astrophysical environments, ranging from interstellar clouds to protoplanetary disks. The aim of this work is to gain a better understanding of the depth dependence and isotope-selective nature of this process.\n  Methods. We present a photodissociation model based on recent spectroscopic data from the literature, which allows us to compute depth-dependent and isotope-selective photodissociation rates at higher accuracy than in previous work. The model includes self-shielding, mutual shielding and shielding"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.3699","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":"2026-05-18T02:13:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JZVKkMibx4Q/nT2Zeo6NcDinlv6xdrHggM9s6O/4eNpS5gox25UhxuWctC1tcrxf1ngCVW7pkOh7kBwps3nwDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:43:40.593619Z"},"content_sha256":"c887e8f96bc1ec4d8ef5831e4baa8b5666b90e6eb7cc6d45804dd54ccfb8bae6","schema_version":"1.0","event_id":"sha256:c887e8f96bc1ec4d8ef5831e4baa8b5666b90e6eb7cc6d45804dd54ccfb8bae6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JZN7HFTW4JD3CLWLRVFZWYCD5R/bundle.json","state_url":"https://pith.science/pith/JZN7HFTW4JD3CLWLRVFZWYCD5R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JZN7HFTW4JD3CLWLRVFZWYCD5R/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":"2026-05-27T04:43:40Z","links":{"resolver":"https://pith.science/pith/JZN7HFTW4JD3CLWLRVFZWYCD5R","bundle":"https://pith.science/pith/JZN7HFTW4JD3CLWLRVFZWYCD5R/bundle.json","state":"https://pith.science/pith/JZN7HFTW4JD3CLWLRVFZWYCD5R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JZN7HFTW4JD3CLWLRVFZWYCD5R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:JZN7HFTW4JD3CLWLRVFZWYCD5R","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":"8691ce90c013bd11fb34344e1ed5e51e68a43a6ffc01300e7b0f040bcd9842cd","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-19T15:39:42Z","title_canon_sha256":"3d94a236c0b84a1365d5e641e37408f753a1cb4f1bd6a4140b477c0f5bbe5f0f"},"schema_version":"1.0","source":{"id":"0906.3699","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.3699","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"arxiv_version","alias_value":"0906.3699v1","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.3699","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"pith_short_12","alias_value":"JZN7HFTW4JD3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"JZN7HFTW4JD3CLWL","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"JZN7HFTW","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:c887e8f96bc1ec4d8ef5831e4baa8b5666b90e6eb7cc6d45804dd54ccfb8bae6","target":"graph","created_at":"2026-05-18T02:13:18Z","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":"Aims. Photodissociation by UV light is an important destruction mechanism for CO in many astrophysical environments, ranging from interstellar clouds to protoplanetary disks. The aim of this work is to gain a better understanding of the depth dependence and isotope-selective nature of this process.\n  Methods. We present a photodissociation model based on recent spectroscopic data from the literature, which allows us to compute depth-dependent and isotope-selective photodissociation rates at higher accuracy than in previous work. The model includes self-shielding, mutual shielding and shielding","authors_text":"2), (2) MPE Garching, (3) Onsala Space Observatory), E.F. van Dishoeck (1, J.H. Black (3) ((1) Leiden Observatory, R. Visser (1)","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-19T15:39:42Z","title":"The photodissociation and chemistry of CO isotopologues: applications to interstellar clouds and circumstellar disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.3699","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":"sha256:25ae797d16f362de6a83dfe01c8b3461802a09e22389a2d621456364d53cdcac","target":"record","created_at":"2026-05-18T02:13:18Z","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":"8691ce90c013bd11fb34344e1ed5e51e68a43a6ffc01300e7b0f040bcd9842cd","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-19T15:39:42Z","title_canon_sha256":"3d94a236c0b84a1365d5e641e37408f753a1cb4f1bd6a4140b477c0f5bbe5f0f"},"schema_version":"1.0","source":{"id":"0906.3699","kind":"arxiv","version":1}},"canonical_sha256":"4e5bf39676e247b12ecb8d4b9b6043ec7ead1c00f63c5140b6d59c7088914940","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e5bf39676e247b12ecb8d4b9b6043ec7ead1c00f63c5140b6d59c7088914940","first_computed_at":"2026-05-18T02:13:18.698561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:18.698561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QXpRVvD27Bd0HqUf4ML0Nkk6vjbLvGxoB1tt+auhiPqngeVZLFazEW1VNnW8bsb2Pojvkib8c32NGBpU7eCtBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:18.699129Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.3699","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25ae797d16f362de6a83dfe01c8b3461802a09e22389a2d621456364d53cdcac","sha256:c887e8f96bc1ec4d8ef5831e4baa8b5666b90e6eb7cc6d45804dd54ccfb8bae6"],"state_sha256":"30fd7f591795f4e34622bdbcfe7f94b7e06ca915ef186e02229722fc53cebc87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cW5UTweL5gTZ2t+0y9SwB++eKT+9NvOdMiJwvISrcuaWLXD7fYXbcNHzYsyimYBgJ0yMl8jhbMNbvSNOXscnAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:43:40.597141Z","bundle_sha256":"b1a19320a4df15cfdfe5c25260f9d05da9d159151988a8a1a6dda90057eef48a"}}