{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:GIN4ILDORBYM7Q2JOKB34Q2XVH","short_pith_number":"pith:GIN4ILDO","canonical_record":{"source":{"id":"1611.00002","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-31T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"8d4655b0b729b450555680b02e08fa97ba5a0d4adfeaec24769dbc09808e9b58","abstract_canon_sha256":"08135b4b9551173ebb98609c5d8d791e8dea856ade079613fd1b297d01fa48c5"},"schema_version":"1.0"},"canonical_sha256":"321bc42c6e8870cfc3497283be4357a9d38c9d9ca77ba79532c82ba70e85f470","source":{"kind":"arxiv","id":"1611.00002","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.00002","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"arxiv_version","alias_value":"1611.00002v1","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.00002","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"pith_short_12","alias_value":"GIN4ILDORBYM","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GIN4ILDORBYM7Q2J","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GIN4ILDO","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:GIN4ILDORBYM7Q2JOKB34Q2XVH","target":"record","payload":{"canonical_record":{"source":{"id":"1611.00002","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-31T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"8d4655b0b729b450555680b02e08fa97ba5a0d4adfeaec24769dbc09808e9b58","abstract_canon_sha256":"08135b4b9551173ebb98609c5d8d791e8dea856ade079613fd1b297d01fa48c5"},"schema_version":"1.0"},"canonical_sha256":"321bc42c6e8870cfc3497283be4357a9d38c9d9ca77ba79532c82ba70e85f470","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:42.753038Z","signature_b64":"ilwZSFOj2jLRU9CSxcwTGNOQVKf9Qz5xrYNEizbdqvXjvv3eeFPSHTTFsVXzehr0Gzuwfp5dFO3GijlI9q7bBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"321bc42c6e8870cfc3497283be4357a9d38c9d9ca77ba79532c82ba70e85f470","last_reissued_at":"2026-05-18T00:51:42.752309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:42.752309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.00002","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":"2026-05-18T00:51:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n4qyOiwNdnTLA7XgCsAmpBERnpLXnYpUDHwSJNUFfHoIM9aiIa7rjLhRMEK1kSJVs4tKFrfo+k+rRKMCf0L9Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:18:11.475408Z"},"content_sha256":"25757f052527c10c3dba0410fd87414152a5847c277288ac07c316cf182331f1","schema_version":"1.0","event_id":"sha256:25757f052527c10c3dba0410fd87414152a5847c277288ac07c316cf182331f1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:GIN4ILDORBYM7Q2JOKB34Q2XVH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ALMA observations of the dense and shocked gas in the nuclear region of NGC 4038 (Antennae galaxies)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Daisuke Iono, David J. Wilner, Giovanni G. Fazio, Junko Ueda, Ryohei Kawabe, Satoshi Ohashi, Shinya Komugi, Toshiki Saito, Yoshimasa Watanabe","submitted_at":"2016-10-31T20:00:00Z","abstract_excerpt":"We present 1\" (<100 pc) resolution maps of millimeter emission from five molecules-CN, HCN, HCO+, CH3OH, and HNCO-obtained towards NGC 4038, which is the northern galaxy of the mid-stage merger, Antennae galaxies, with the Atacama Large Millimeter/submillimeter Array. Three molecules (CN, CH3OH, and HNCO) were detected for the first time in the nuclear region of NGC 4038. High-resolution mapping reveals a systematic difference in distributions of different molecular species and continuum emission. Active star forming regions identified by the 3 mm and 850 um continuum emission are offset from "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.00002","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":"2026-05-18T00:51:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"esEbVkfqhPoPcCQyFJhxdSy+Lpw1PJXLXcKWN7RmiQYeEBlaRILvrYwGw+hCRfkiqgl61vjXNK8kuztf/nofAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:18:11.475779Z"},"content_sha256":"3de025c09d6bff5646ec599403eb051d804261006af4177a51be9c34a015429c","schema_version":"1.0","event_id":"sha256:3de025c09d6bff5646ec599403eb051d804261006af4177a51be9c34a015429c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GIN4ILDORBYM7Q2JOKB34Q2XVH/bundle.json","state_url":"https://pith.science/pith/GIN4ILDORBYM7Q2JOKB34Q2XVH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GIN4ILDORBYM7Q2JOKB34Q2XVH/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":"2026-05-28T00:18:11Z","links":{"resolver":"https://pith.science/pith/GIN4ILDORBYM7Q2JOKB34Q2XVH","bundle":"https://pith.science/pith/GIN4ILDORBYM7Q2JOKB34Q2XVH/bundle.json","state":"https://pith.science/pith/GIN4ILDORBYM7Q2JOKB34Q2XVH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GIN4ILDORBYM7Q2JOKB34Q2XVH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GIN4ILDORBYM7Q2JOKB34Q2XVH","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":"08135b4b9551173ebb98609c5d8d791e8dea856ade079613fd1b297d01fa48c5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-31T20:00:00Z","title_canon_sha256":"8d4655b0b729b450555680b02e08fa97ba5a0d4adfeaec24769dbc09808e9b58"},"schema_version":"1.0","source":{"id":"1611.00002","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.00002","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"arxiv_version","alias_value":"1611.00002v1","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.00002","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"pith_short_12","alias_value":"GIN4ILDORBYM","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GIN4ILDORBYM7Q2J","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GIN4ILDO","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:3de025c09d6bff5646ec599403eb051d804261006af4177a51be9c34a015429c","target":"graph","created_at":"2026-05-18T00:51:42Z","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 present 1\" (<100 pc) resolution maps of millimeter emission from five molecules-CN, HCN, HCO+, CH3OH, and HNCO-obtained towards NGC 4038, which is the northern galaxy of the mid-stage merger, Antennae galaxies, with the Atacama Large Millimeter/submillimeter Array. Three molecules (CN, CH3OH, and HNCO) were detected for the first time in the nuclear region of NGC 4038. High-resolution mapping reveals a systematic difference in distributions of different molecular species and continuum emission. Active star forming regions identified by the 3 mm and 850 um continuum emission are offset from ","authors_text":"Daisuke Iono, David J. Wilner, Giovanni G. Fazio, Junko Ueda, Ryohei Kawabe, Satoshi Ohashi, Shinya Komugi, Toshiki Saito, Yoshimasa Watanabe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-31T20:00:00Z","title":"ALMA observations of the dense and shocked gas in the nuclear region of NGC 4038 (Antennae galaxies)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.00002","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":"sha256:25757f052527c10c3dba0410fd87414152a5847c277288ac07c316cf182331f1","target":"record","created_at":"2026-05-18T00:51:42Z","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":"08135b4b9551173ebb98609c5d8d791e8dea856ade079613fd1b297d01fa48c5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-31T20:00:00Z","title_canon_sha256":"8d4655b0b729b450555680b02e08fa97ba5a0d4adfeaec24769dbc09808e9b58"},"schema_version":"1.0","source":{"id":"1611.00002","kind":"arxiv","version":1}},"canonical_sha256":"321bc42c6e8870cfc3497283be4357a9d38c9d9ca77ba79532c82ba70e85f470","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"321bc42c6e8870cfc3497283be4357a9d38c9d9ca77ba79532c82ba70e85f470","first_computed_at":"2026-05-18T00:51:42.752309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:42.752309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ilwZSFOj2jLRU9CSxcwTGNOQVKf9Qz5xrYNEizbdqvXjvv3eeFPSHTTFsVXzehr0Gzuwfp5dFO3GijlI9q7bBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:42.753038Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.00002","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25757f052527c10c3dba0410fd87414152a5847c277288ac07c316cf182331f1","sha256:3de025c09d6bff5646ec599403eb051d804261006af4177a51be9c34a015429c"],"state_sha256":"80c1261971f70b3d1fb6094b2eef5e79dea11ca64663a06fbc507598014a8ca5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZowwfcNJo/8y2ZmCDxggYQse6+KbB2Uka7zqcDAMPfR5qKlvl9jpuhJgWAJycABu+Huwc3YAOzu4f1cPlKDMAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:18:11.478027Z","bundle_sha256":"5a9b46142544f4104d19c4b1dbb1c12aea2a575ec051965bc40e5530887549c4"}}