{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:RURZVZQU2DURKP7MJEOWUELV2C","short_pith_number":"pith:RURZVZQU","canonical_record":{"source":{"id":"1510.00739","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-02T21:14:14Z","cross_cats_sorted":[],"title_canon_sha256":"fb956fc23c30f2392a73cb24131dae4b9ebc22b92ab6bf33e9082121eff2b025","abstract_canon_sha256":"29c33bba91a13b4c150c08e3f784c0558e3a7c5c3add58271e4fd57def38d6a6"},"schema_version":"1.0"},"canonical_sha256":"8d239ae614d0e9153fec491d6a1175d0949e4476f6aba8fa3810fd67cc5f852f","source":{"kind":"arxiv","id":"1510.00739","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.00739","created_at":"2026-05-18T01:21:30Z"},{"alias_kind":"arxiv_version","alias_value":"1510.00739v1","created_at":"2026-05-18T01:21:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.00739","created_at":"2026-05-18T01:21:30Z"},{"alias_kind":"pith_short_12","alias_value":"RURZVZQU2DUR","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RURZVZQU2DURKP7M","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RURZVZQU","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:RURZVZQU2DURKP7MJEOWUELV2C","target":"record","payload":{"canonical_record":{"source":{"id":"1510.00739","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-02T21:14:14Z","cross_cats_sorted":[],"title_canon_sha256":"fb956fc23c30f2392a73cb24131dae4b9ebc22b92ab6bf33e9082121eff2b025","abstract_canon_sha256":"29c33bba91a13b4c150c08e3f784c0558e3a7c5c3add58271e4fd57def38d6a6"},"schema_version":"1.0"},"canonical_sha256":"8d239ae614d0e9153fec491d6a1175d0949e4476f6aba8fa3810fd67cc5f852f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:30.827158Z","signature_b64":"NNd8gNryv3AIWf0fWlMOa9ceNVwMD30pKIbKali7V8KIFBU2KfNc3NXy2AlZeC22aF3LCXwvWQwgmNujZniEAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8d239ae614d0e9153fec491d6a1175d0949e4476f6aba8fa3810fd67cc5f852f","last_reissued_at":"2026-05-18T01:21:30.826597Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:30.826597Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.00739","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":"2026-05-18T01:21:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xKfYdK1PevrAQxAdAd0eN2THvRG05Ovyrg4QZ1AbI8TZvgLD95xbdg8mIultT8SHlmLsMIg/AB0ERaknMuEGBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:04:15.701360Z"},"content_sha256":"11b91dc0f2843f04da8ad167a985e14e96ac0e7d62c7e4530ce653e18301233c","schema_version":"1.0","event_id":"sha256:11b91dc0f2843f04da8ad167a985e14e96ac0e7d62c7e4530ce653e18301233c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:RURZVZQU2DURKP7MJEOWUELV2C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rings of C2H in the Molecular Disks Orbiting TW Hya and V4046 Sgr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) Harvard-Smithsonian Center for Astrophysics, (3) SETI Institute, 4), (4) NASA Ames Research Center, (5) Universite Grenoble Alpes, 6), (6) Institut de Planetologie et d'Astrophysique de Grenoble), C. Qi (2), D. Wilner (2) ((1) Rochester Institute of Technology, J. H. Kastner (1), K. Oberg (2), P. Hily-Blant (5, S. Andrews (2), T. Forveille (6), U. Gorti (3","submitted_at":"2015-10-02T21:14:14Z","abstract_excerpt":"We have used the Submillimeter Array to image, at ~1\" resolution, C2H(3-2) emission from the molecule-rich circumstellar disks orbiting the nearby, classical T Tauri star systems TW Hya and V4046 Sgr. The SMA imaging reveals that the C2H emission exhibits a ring-like morphology within each disk, the inner hole radius of the C2H ring within the V4046 Sgr disk (~70 AU) is somewhat larger than than of its counterpart within the TW Hya disk (~45 AU). We suggest that, in each case, the C2H emission likely traces irradiation of the tenuous surface layers of the outer disks by high-energy photons fro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.00739","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":"2026-05-18T01:21:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fyjv9c3Qh7pjK8Ddbm7KRLBLXFFB/zGAb1XqoHbgFqY9Ur/lsQJWJgs1g/4HroIPQwhZsQXlHC9le1y3U48rCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:04:15.701756Z"},"content_sha256":"b5e3c45262cda1f98347da9db5d1254198000158c83e158fd6fbfadf72336d6f","schema_version":"1.0","event_id":"sha256:b5e3c45262cda1f98347da9db5d1254198000158c83e158fd6fbfadf72336d6f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RURZVZQU2DURKP7MJEOWUELV2C/bundle.json","state_url":"https://pith.science/pith/RURZVZQU2DURKP7MJEOWUELV2C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RURZVZQU2DURKP7MJEOWUELV2C/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":"2026-06-03T21:04:15Z","links":{"resolver":"https://pith.science/pith/RURZVZQU2DURKP7MJEOWUELV2C","bundle":"https://pith.science/pith/RURZVZQU2DURKP7MJEOWUELV2C/bundle.json","state":"https://pith.science/pith/RURZVZQU2DURKP7MJEOWUELV2C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RURZVZQU2DURKP7MJEOWUELV2C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RURZVZQU2DURKP7MJEOWUELV2C","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":"29c33bba91a13b4c150c08e3f784c0558e3a7c5c3add58271e4fd57def38d6a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-02T21:14:14Z","title_canon_sha256":"fb956fc23c30f2392a73cb24131dae4b9ebc22b92ab6bf33e9082121eff2b025"},"schema_version":"1.0","source":{"id":"1510.00739","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.00739","created_at":"2026-05-18T01:21:30Z"},{"alias_kind":"arxiv_version","alias_value":"1510.00739v1","created_at":"2026-05-18T01:21:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.00739","created_at":"2026-05-18T01:21:30Z"},{"alias_kind":"pith_short_12","alias_value":"RURZVZQU2DUR","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RURZVZQU2DURKP7M","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RURZVZQU","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:b5e3c45262cda1f98347da9db5d1254198000158c83e158fd6fbfadf72336d6f","target":"graph","created_at":"2026-05-18T01:21:30Z","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":"We have used the Submillimeter Array to image, at ~1\" resolution, C2H(3-2) emission from the molecule-rich circumstellar disks orbiting the nearby, classical T Tauri star systems TW Hya and V4046 Sgr. The SMA imaging reveals that the C2H emission exhibits a ring-like morphology within each disk, the inner hole radius of the C2H ring within the V4046 Sgr disk (~70 AU) is somewhat larger than than of its counterpart within the TW Hya disk (~45 AU). We suggest that, in each case, the C2H emission likely traces irradiation of the tenuous surface layers of the outer disks by high-energy photons fro","authors_text":"(2) Harvard-Smithsonian Center for Astrophysics, (3) SETI Institute, 4), (4) NASA Ames Research Center, (5) Universite Grenoble Alpes, 6), (6) Institut de Planetologie et d'Astrophysique de Grenoble), C. Qi (2), D. Wilner (2) ((1) Rochester Institute of Technology, J. H. Kastner (1), K. Oberg (2), P. Hily-Blant (5, S. Andrews (2), T. Forveille (6), U. Gorti (3","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-02T21:14:14Z","title":"Rings of C2H in the Molecular Disks Orbiting TW Hya and V4046 Sgr"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.00739","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":"sha256:11b91dc0f2843f04da8ad167a985e14e96ac0e7d62c7e4530ce653e18301233c","target":"record","created_at":"2026-05-18T01:21:30Z","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":"29c33bba91a13b4c150c08e3f784c0558e3a7c5c3add58271e4fd57def38d6a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-02T21:14:14Z","title_canon_sha256":"fb956fc23c30f2392a73cb24131dae4b9ebc22b92ab6bf33e9082121eff2b025"},"schema_version":"1.0","source":{"id":"1510.00739","kind":"arxiv","version":1}},"canonical_sha256":"8d239ae614d0e9153fec491d6a1175d0949e4476f6aba8fa3810fd67cc5f852f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8d239ae614d0e9153fec491d6a1175d0949e4476f6aba8fa3810fd67cc5f852f","first_computed_at":"2026-05-18T01:21:30.826597Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:30.826597Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NNd8gNryv3AIWf0fWlMOa9ceNVwMD30pKIbKali7V8KIFBU2KfNc3NXy2AlZeC22aF3LCXwvWQwgmNujZniEAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:30.827158Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.00739","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11b91dc0f2843f04da8ad167a985e14e96ac0e7d62c7e4530ce653e18301233c","sha256:b5e3c45262cda1f98347da9db5d1254198000158c83e158fd6fbfadf72336d6f"],"state_sha256":"bada6cfc08862bd33c1b24456b67de9f004f38e55228b8316e33be2f75c7ff66"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NJ/CGYB+2ExwXj9CxLc+ftzqbjpNqqRyLcE3BZR7wgoBHxQ0lt+JzsOYPug4mLEuTpsJXZS5dw0GGbik8uGICg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T21:04:15.703834Z","bundle_sha256":"141b3d3abcb76f3350969f9f02f774cc5fb076cc142d461fb0d3c6a22e68474e"}}