{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:XZNDKEORJ2SQI7TZYMVMTQSQN2","short_pith_number":"pith:XZNDKEOR","canonical_record":{"source":{"id":"0810.3577","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-20T15:12:42Z","cross_cats_sorted":[],"title_canon_sha256":"842a9427d8c3a6353e180ce146d1a69119f4dae4100be3930bc395fe85e18e8d","abstract_canon_sha256":"5f5389dd11d3c3613942b9768b8ecd05c1965e628bde17f54d711badfdd85c22"},"schema_version":"1.0"},"canonical_sha256":"be5a3511d14ea5047e79c32ac9c2506e8b8a6c4a15337858481eb9d7f26ae8f9","source":{"kind":"arxiv","id":"0810.3577","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.3577","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"arxiv_version","alias_value":"0810.3577v1","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.3577","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"pith_short_12","alias_value":"XZNDKEORJ2SQ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"XZNDKEORJ2SQI7TZ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"XZNDKEOR","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:XZNDKEORJ2SQI7TZYMVMTQSQN2","target":"record","payload":{"canonical_record":{"source":{"id":"0810.3577","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-20T15:12:42Z","cross_cats_sorted":[],"title_canon_sha256":"842a9427d8c3a6353e180ce146d1a69119f4dae4100be3930bc395fe85e18e8d","abstract_canon_sha256":"5f5389dd11d3c3613942b9768b8ecd05c1965e628bde17f54d711badfdd85c22"},"schema_version":"1.0"},"canonical_sha256":"be5a3511d14ea5047e79c32ac9c2506e8b8a6c4a15337858481eb9d7f26ae8f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:25.849370Z","signature_b64":"qeMftpxlt5ea8UwuDKFUnaPwwl9tALUqFWqonv/S6SZ8J36lnjOVdlS9yVKRO1rR5Awq37vMmvyFtYtGFUMrDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"be5a3511d14ea5047e79c32ac9c2506e8b8a6c4a15337858481eb9d7f26ae8f9","last_reissued_at":"2026-05-18T04:29:25.848996Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:25.848996Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0810.3577","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":"2026-05-18T04:29:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gPm47Ja77Kn5TqCVt84OlI2kE25XtznwW6C1o4Ud2ch5VfKna5Umlz8XhM4rSok1jV1W2+qHWadMx159z5lLAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T06:35:53.722856Z"},"content_sha256":"964ade018072eb58138c5b1c26b9f72c9e4c59dad7efafebf44470b2c55df12e","schema_version":"1.0","event_id":"sha256:964ade018072eb58138c5b1c26b9f72c9e4c59dad7efafebf44470b2c55df12e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:XZNDKEORJ2SQI7TZYMVMTQSQN2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Multiwavelength View of Star Formation in Interacting Galaxies in the Pavo Group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Cambridge Univ.), C. Jones, M.L.N. Ashby, M. Machacek, N. Bastian (IoA, W. R. Forman (CfA)","submitted_at":"2008-10-20T15:12:42Z","abstract_excerpt":"We combine Spitzer IRAC mid-infrared (MIR) and Chandra X-ray observations of the dominant galaxies NGC6872 and NGC6876 in the Pavo group with archival optical and HI data to study interaction-induced star formation. In spiral galaxy NGC6872, 8.0 and 5.8 micron nonstellar emission having colors consistent with polycyclic aromatic hydrocarbons (PAHs) is concentrated in clumps in three regions: in a 5 kpc radius outer ring about the center of the spiral galaxy, in a bridge of emission connecting NGC6872's northern spiral arm to IC4970, and along the full extent of NGC6872's tidal arms. PAH emissi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.3577","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":"2026-05-18T04:29:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ldwTg2DOKnqEXFPAnIGXSqpXvoiKBqaUlxAwNgPOKaPp9144GQRgnuB5Ia/0d41SfxhW/QFtgTHhhp/BhiJ9Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T06:35:53.723517Z"},"content_sha256":"18f2df88150b9c569fc3698c827b96811a10df3083f2d7d6f366a610703c82d3","schema_version":"1.0","event_id":"sha256:18f2df88150b9c569fc3698c827b96811a10df3083f2d7d6f366a610703c82d3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XZNDKEORJ2SQI7TZYMVMTQSQN2/bundle.json","state_url":"https://pith.science/pith/XZNDKEORJ2SQI7TZYMVMTQSQN2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XZNDKEORJ2SQI7TZYMVMTQSQN2/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":"2026-06-05T06:35:53Z","links":{"resolver":"https://pith.science/pith/XZNDKEORJ2SQI7TZYMVMTQSQN2","bundle":"https://pith.science/pith/XZNDKEORJ2SQI7TZYMVMTQSQN2/bundle.json","state":"https://pith.science/pith/XZNDKEORJ2SQI7TZYMVMTQSQN2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XZNDKEORJ2SQI7TZYMVMTQSQN2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:XZNDKEORJ2SQI7TZYMVMTQSQN2","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":"5f5389dd11d3c3613942b9768b8ecd05c1965e628bde17f54d711badfdd85c22","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-20T15:12:42Z","title_canon_sha256":"842a9427d8c3a6353e180ce146d1a69119f4dae4100be3930bc395fe85e18e8d"},"schema_version":"1.0","source":{"id":"0810.3577","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.3577","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"arxiv_version","alias_value":"0810.3577v1","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.3577","created_at":"2026-05-18T04:29:25Z"},{"alias_kind":"pith_short_12","alias_value":"XZNDKEORJ2SQ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"XZNDKEORJ2SQI7TZ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"XZNDKEOR","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:18f2df88150b9c569fc3698c827b96811a10df3083f2d7d6f366a610703c82d3","target":"graph","created_at":"2026-05-18T04:29:25Z","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 combine Spitzer IRAC mid-infrared (MIR) and Chandra X-ray observations of the dominant galaxies NGC6872 and NGC6876 in the Pavo group with archival optical and HI data to study interaction-induced star formation. In spiral galaxy NGC6872, 8.0 and 5.8 micron nonstellar emission having colors consistent with polycyclic aromatic hydrocarbons (PAHs) is concentrated in clumps in three regions: in a 5 kpc radius outer ring about the center of the spiral galaxy, in a bridge of emission connecting NGC6872's northern spiral arm to IC4970, and along the full extent of NGC6872's tidal arms. PAH emissi","authors_text":"Cambridge Univ.), C. Jones, M.L.N. Ashby, M. Machacek, N. Bastian (IoA, W. R. Forman (CfA)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-20T15:12:42Z","title":"A Multiwavelength View of Star Formation in Interacting Galaxies in the Pavo Group"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.3577","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":"sha256:964ade018072eb58138c5b1c26b9f72c9e4c59dad7efafebf44470b2c55df12e","target":"record","created_at":"2026-05-18T04:29:25Z","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":"5f5389dd11d3c3613942b9768b8ecd05c1965e628bde17f54d711badfdd85c22","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-20T15:12:42Z","title_canon_sha256":"842a9427d8c3a6353e180ce146d1a69119f4dae4100be3930bc395fe85e18e8d"},"schema_version":"1.0","source":{"id":"0810.3577","kind":"arxiv","version":1}},"canonical_sha256":"be5a3511d14ea5047e79c32ac9c2506e8b8a6c4a15337858481eb9d7f26ae8f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be5a3511d14ea5047e79c32ac9c2506e8b8a6c4a15337858481eb9d7f26ae8f9","first_computed_at":"2026-05-18T04:29:25.848996Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:25.848996Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qeMftpxlt5ea8UwuDKFUnaPwwl9tALUqFWqonv/S6SZ8J36lnjOVdlS9yVKRO1rR5Awq37vMmvyFtYtGFUMrDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:25.849370Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.3577","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:964ade018072eb58138c5b1c26b9f72c9e4c59dad7efafebf44470b2c55df12e","sha256:18f2df88150b9c569fc3698c827b96811a10df3083f2d7d6f366a610703c82d3"],"state_sha256":"3f071ffd8214ea2d66810ff2638a9f05693816ed62e29a2fd6b40acbe97935d9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u/00RBZaTBS4W3yaPVdB8GU00D3l3BwhPYzW8Ij5pEzLd3FWxX58VsIuZPLtjV8HvBGVqVh8FsvFcldg3YJTAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T06:35:53.727200Z","bundle_sha256":"fdaf3fdb1158275444d662c864a7444d7b50c8b088d8090cfb81714ad51cd4d5"}}