{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:W3Q4LZENAD5A7JD3BIQI2BAVYK","short_pith_number":"pith:W3Q4LZEN","canonical_record":{"source":{"id":"1501.05694","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-23T01:53:54Z","cross_cats_sorted":[],"title_canon_sha256":"6df3741de39572a6ea513f30e4a7acadd66005b78f7edd8247b913183c61943f","abstract_canon_sha256":"091f8c0bc534c011125fe00a1e877b17e4651c919187e13b1853655b2f72aec3"},"schema_version":"1.0"},"canonical_sha256":"b6e1c5e48d00fa0fa47b0a208d0415c28cf2ac745cb3bccb3414bd8f52f0e874","source":{"kind":"arxiv","id":"1501.05694","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.05694","created_at":"2026-05-18T01:09:50Z"},{"alias_kind":"arxiv_version","alias_value":"1501.05694v1","created_at":"2026-05-18T01:09:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.05694","created_at":"2026-05-18T01:09:50Z"},{"alias_kind":"pith_short_12","alias_value":"W3Q4LZENAD5A","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"W3Q4LZENAD5A7JD3","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"W3Q4LZEN","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:W3Q4LZENAD5A7JD3BIQI2BAVYK","target":"record","payload":{"canonical_record":{"source":{"id":"1501.05694","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-23T01:53:54Z","cross_cats_sorted":[],"title_canon_sha256":"6df3741de39572a6ea513f30e4a7acadd66005b78f7edd8247b913183c61943f","abstract_canon_sha256":"091f8c0bc534c011125fe00a1e877b17e4651c919187e13b1853655b2f72aec3"},"schema_version":"1.0"},"canonical_sha256":"b6e1c5e48d00fa0fa47b0a208d0415c28cf2ac745cb3bccb3414bd8f52f0e874","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:50.912649Z","signature_b64":"3HVTKKtVrXJoptiAJx0jBVJDCZYjkOtjRAJWx4IUJWsYnpIy2hkhsDVZ03Hfr8As8wptvWYn5mpH/rZTMmErAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b6e1c5e48d00fa0fa47b0a208d0415c28cf2ac745cb3bccb3414bd8f52f0e874","last_reissued_at":"2026-05-18T01:09:50.911951Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:50.911951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.05694","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":"2026-05-18T01:09:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K2UtD+/r67HEqSF2NCr4U6Kn/sgy4OuBD0WREnc9/07VBwj+XzQuvVzxYLrF7F+Hp48rBai3lJ9DKFQ16UHvAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:26:38.569112Z"},"content_sha256":"eb0ded70539cca595a76a5fd35859dbaf4a6503b567fe1d587efa95faea6ad38","schema_version":"1.0","event_id":"sha256:eb0ded70539cca595a76a5fd35859dbaf4a6503b567fe1d587efa95faea6ad38"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:W3Q4LZENAD5A7JD3BIQI2BAVYK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ALMA Multi-line Imaging of the Nearby Starburst Galaxy NGC 253","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(10) European Southern Observatory), 2, 2), (2) National Radio Astronomy Observatory, 3), (3) Adjunct Astronomer, (4) Max-Planck Institut f\\\"ur Astronomie, 5), (5) University of Maryland, (6) National Radio Astronomy Observatory, (7) University of Alberta, (8) University of Maryland, (9) Max Planck Institut f\\\"ur Radioastronomie, Adam K. Leroy (4), Alberto D. Bolatto (5), Axel Weiss (9), Charlottesville, College Park, David S. Meier (1, Department of Astronomy, Erik Rosolowsky (7), Fabian Walter (4, Joint Space-Science Institute, J\\\"urgen Ott (2), Laura K. Zschaechner (4) ((1) New Mexico Institute of Mining, Martin A. Zwaan (10), National Radio Astronomy Observatory, NM, Socorro, Steven R. Warren (5), Sylvain Veilleux (8, Technology, VA","submitted_at":"2015-01-23T01:53:54Z","abstract_excerpt":"We present spatially resolved ($\\sim$50 pc) imaging of molecular gas species in the central kiloparsec of the nearby starburst galaxy NGC 253, based on observations taken with the Atacama Large Millimeter/submillimeter Array (ALMA). A total of 50 molecular lines are detected over a 13 GHz bandwidth imaged in the 3 mm band. Unambiguous identifications are assigned for 27 lines. Based on the measured high CO/C$^{17}$O isotopic line ratio ($\\gtrsim$350), we show that $^{12}$CO(1-0) has moderate optical depths. A comparison of the HCN and HCO$^{+}$ with their $^{13}$C-substituted isotopologues sho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.05694","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":"2026-05-18T01:09:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TccdIWGPErBFC0hu21nwjQ0VAGx3C9zAZ0L7wXToaHGMi/OISa48VOg/A9w3s36pvzYMn3DNBCYZfNkYwEeICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:26:38.569768Z"},"content_sha256":"cdf9abd80f6668bd802f9ca73cb5f6d0207a9f14b60867391942ee5258311a7d","schema_version":"1.0","event_id":"sha256:cdf9abd80f6668bd802f9ca73cb5f6d0207a9f14b60867391942ee5258311a7d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W3Q4LZENAD5A7JD3BIQI2BAVYK/bundle.json","state_url":"https://pith.science/pith/W3Q4LZENAD5A7JD3BIQI2BAVYK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W3Q4LZENAD5A7JD3BIQI2BAVYK/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":"2026-05-31T12:26:38Z","links":{"resolver":"https://pith.science/pith/W3Q4LZENAD5A7JD3BIQI2BAVYK","bundle":"https://pith.science/pith/W3Q4LZENAD5A7JD3BIQI2BAVYK/bundle.json","state":"https://pith.science/pith/W3Q4LZENAD5A7JD3BIQI2BAVYK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W3Q4LZENAD5A7JD3BIQI2BAVYK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:W3Q4LZENAD5A7JD3BIQI2BAVYK","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":"091f8c0bc534c011125fe00a1e877b17e4651c919187e13b1853655b2f72aec3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-23T01:53:54Z","title_canon_sha256":"6df3741de39572a6ea513f30e4a7acadd66005b78f7edd8247b913183c61943f"},"schema_version":"1.0","source":{"id":"1501.05694","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.05694","created_at":"2026-05-18T01:09:50Z"},{"alias_kind":"arxiv_version","alias_value":"1501.05694v1","created_at":"2026-05-18T01:09:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.05694","created_at":"2026-05-18T01:09:50Z"},{"alias_kind":"pith_short_12","alias_value":"W3Q4LZENAD5A","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"W3Q4LZENAD5A7JD3","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"W3Q4LZEN","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:cdf9abd80f6668bd802f9ca73cb5f6d0207a9f14b60867391942ee5258311a7d","target":"graph","created_at":"2026-05-18T01:09:50Z","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 spatially resolved ($\\sim$50 pc) imaging of molecular gas species in the central kiloparsec of the nearby starburst galaxy NGC 253, based on observations taken with the Atacama Large Millimeter/submillimeter Array (ALMA). A total of 50 molecular lines are detected over a 13 GHz bandwidth imaged in the 3 mm band. Unambiguous identifications are assigned for 27 lines. Based on the measured high CO/C$^{17}$O isotopic line ratio ($\\gtrsim$350), we show that $^{12}$CO(1-0) has moderate optical depths. A comparison of the HCN and HCO$^{+}$ with their $^{13}$C-substituted isotopologues sho","authors_text":"(10) European Southern Observatory), 2, 2), (2) National Radio Astronomy Observatory, 3), (3) Adjunct Astronomer, (4) Max-Planck Institut f\\\"ur Astronomie, 5), (5) University of Maryland, (6) National Radio Astronomy Observatory, (7) University of Alberta, (8) University of Maryland, (9) Max Planck Institut f\\\"ur Radioastronomie, Adam K. Leroy (4), Alberto D. Bolatto (5), Axel Weiss (9), Charlottesville, College Park, David S. Meier (1, Department of Astronomy, Erik Rosolowsky (7), Fabian Walter (4, Joint Space-Science Institute, J\\\"urgen Ott (2), Laura K. Zschaechner (4) ((1) New Mexico Institute of Mining, Martin A. Zwaan (10), National Radio Astronomy Observatory, NM, Socorro, Steven R. Warren (5), Sylvain Veilleux (8, Technology, VA","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-23T01:53:54Z","title":"ALMA Multi-line Imaging of the Nearby Starburst Galaxy NGC 253"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.05694","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:eb0ded70539cca595a76a5fd35859dbaf4a6503b567fe1d587efa95faea6ad38","target":"record","created_at":"2026-05-18T01:09:50Z","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":"091f8c0bc534c011125fe00a1e877b17e4651c919187e13b1853655b2f72aec3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-23T01:53:54Z","title_canon_sha256":"6df3741de39572a6ea513f30e4a7acadd66005b78f7edd8247b913183c61943f"},"schema_version":"1.0","source":{"id":"1501.05694","kind":"arxiv","version":1}},"canonical_sha256":"b6e1c5e48d00fa0fa47b0a208d0415c28cf2ac745cb3bccb3414bd8f52f0e874","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b6e1c5e48d00fa0fa47b0a208d0415c28cf2ac745cb3bccb3414bd8f52f0e874","first_computed_at":"2026-05-18T01:09:50.911951Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:50.911951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3HVTKKtVrXJoptiAJx0jBVJDCZYjkOtjRAJWx4IUJWsYnpIy2hkhsDVZ03Hfr8As8wptvWYn5mpH/rZTMmErAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:50.912649Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.05694","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb0ded70539cca595a76a5fd35859dbaf4a6503b567fe1d587efa95faea6ad38","sha256:cdf9abd80f6668bd802f9ca73cb5f6d0207a9f14b60867391942ee5258311a7d"],"state_sha256":"32978352408d746556348bd989ab19d27da7fb3119cd6d7ef860448a2c9ab382"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7qe9nld86JKavxcS6HsIXBcmEB9uFzWzDdinTe0ZgbvVbsnQATb9iBF+CKuI/8GlJIBu4TirFG1cZM9NxUiMAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:26:38.572779Z","bundle_sha256":"90ed3e47a35192146fd163df0a16235f099fbfabda47a428a995189d5b2cb332"}}