{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:N3VIUJFLTSIN3W7L74CZSQNNBL","short_pith_number":"pith:N3VIUJFL","canonical_record":{"source":{"id":"2109.06290","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-13T20:00:16Z","cross_cats_sorted":[],"title_canon_sha256":"c45b4fcb6cac9ac924a3f16314f6917432bd40cee0e61a0926a8d10bda5a8f4f","abstract_canon_sha256":"87fd6b49c49d2316d83ed61dff9cea81ffb8937e54828c10990520554b1bf157"},"schema_version":"1.0"},"canonical_sha256":"6eea8a24ab9c90dddbebff059941ad0af3295d58eec3e43633fb81048ccc2826","source":{"kind":"arxiv","id":"2109.06290","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.06290","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"arxiv_version","alias_value":"2109.06290v1","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.06290","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"pith_short_12","alias_value":"N3VIUJFLTSIN","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"pith_short_16","alias_value":"N3VIUJFLTSIN3W7L","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"pith_short_8","alias_value":"N3VIUJFL","created_at":"2026-07-05T03:40:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:N3VIUJFLTSIN3W7L74CZSQNNBL","target":"record","payload":{"canonical_record":{"source":{"id":"2109.06290","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-13T20:00:16Z","cross_cats_sorted":[],"title_canon_sha256":"c45b4fcb6cac9ac924a3f16314f6917432bd40cee0e61a0926a8d10bda5a8f4f","abstract_canon_sha256":"87fd6b49c49d2316d83ed61dff9cea81ffb8937e54828c10990520554b1bf157"},"schema_version":"1.0"},"canonical_sha256":"6eea8a24ab9c90dddbebff059941ad0af3295d58eec3e43633fb81048ccc2826","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:40:45.456550Z","signature_b64":"mLIaO3n7i70APcPXiN4De2nSLUGPuFeP+m7QhJG+fabb2zS620cgRQYhi3e4eWJM+50YNHw9jV+i4++56kenCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6eea8a24ab9c90dddbebff059941ad0af3295d58eec3e43633fb81048ccc2826","last_reissued_at":"2026-07-05T03:40:45.456132Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:40:45.456132Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.06290","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":"2026-07-05T03:40:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"02WuSKYcgKasNLbJx4O7AFcqeYdOmClMVyKgJXkLhvRWKiwjWFWiXc99jO5l5jwUVZVRaSHlQ+22Lf2T42mhDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T17:38:33.242357Z"},"content_sha256":"d224d7de259076b320efcd47ac8c1af6514f333ca614dc02f3832cefc5db5f18","schema_version":"1.0","event_id":"sha256:d224d7de259076b320efcd47ac8c1af6514f333ca614dc02f3832cefc5db5f18"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:N3VIUJFLTSIN3W7L74CZSQNNBL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cold Molecular Gas in Merger Remnants. II. The properties of dense molecular gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Daisuke Iono, Daniel Rosa-Gonzalez, Junko Ueda, Min S. Yun, Olga Vega, Ronald L. Snell, Takuji Yamashita, Tomonari Michiyama, Toshiki Saito, Yoshimasa Watanabe","submitted_at":"2021-09-13T20:00:16Z","abstract_excerpt":"We present the 3 mm wavelength spectra of 28 local galaxy merger remnants obtained with the Large Millimeter Telescope. Fifteen molecular lines from 13 different molecular species and isotopologues were identified, and 21 out of 28 sources were detected in one or more molecular lines. On average, the line ratios of the dense gas tracers, such as HCN (1-0) and HCO$^{+}$(1-0), to $^{13}$CO (1-0) are 3-4 times higher in ultra/luminous infrared galaxies (U/LIRGs) than in non-LIRGs in our sample. These high line ratios could be explained by the deficiency of $^{13}$CO and high dense gas fractions s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.06290","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2109.06290/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:40:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EYGCDM62obtDISLYB7GM9vFmdfV9t6xQivDrjsVB0VwSQhj8ErCQgvdxZguIYy9BJ427cbk+8WZVLFETltLlCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T17:38:33.242847Z"},"content_sha256":"db722e58ecfa72342df9521b72a29631fe967ed863661d837784ff09f2ecdc2a","schema_version":"1.0","event_id":"sha256:db722e58ecfa72342df9521b72a29631fe967ed863661d837784ff09f2ecdc2a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N3VIUJFLTSIN3W7L74CZSQNNBL/bundle.json","state_url":"https://pith.science/pith/N3VIUJFLTSIN3W7L74CZSQNNBL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N3VIUJFLTSIN3W7L74CZSQNNBL/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":"2026-08-20T17:38:33Z","links":{"resolver":"https://pith.science/pith/N3VIUJFLTSIN3W7L74CZSQNNBL","bundle":"https://pith.science/pith/N3VIUJFLTSIN3W7L74CZSQNNBL/bundle.json","state":"https://pith.science/pith/N3VIUJFLTSIN3W7L74CZSQNNBL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N3VIUJFLTSIN3W7L74CZSQNNBL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:N3VIUJFLTSIN3W7L74CZSQNNBL","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":"87fd6b49c49d2316d83ed61dff9cea81ffb8937e54828c10990520554b1bf157","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-13T20:00:16Z","title_canon_sha256":"c45b4fcb6cac9ac924a3f16314f6917432bd40cee0e61a0926a8d10bda5a8f4f"},"schema_version":"1.0","source":{"id":"2109.06290","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.06290","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"arxiv_version","alias_value":"2109.06290v1","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.06290","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"pith_short_12","alias_value":"N3VIUJFLTSIN","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"pith_short_16","alias_value":"N3VIUJFLTSIN3W7L","created_at":"2026-07-05T03:40:45Z"},{"alias_kind":"pith_short_8","alias_value":"N3VIUJFL","created_at":"2026-07-05T03:40:45Z"}],"graph_snapshots":[{"event_id":"sha256:db722e58ecfa72342df9521b72a29631fe967ed863661d837784ff09f2ecdc2a","target":"graph","created_at":"2026-07-05T03:40:45Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2109.06290/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the 3 mm wavelength spectra of 28 local galaxy merger remnants obtained with the Large Millimeter Telescope. Fifteen molecular lines from 13 different molecular species and isotopologues were identified, and 21 out of 28 sources were detected in one or more molecular lines. On average, the line ratios of the dense gas tracers, such as HCN (1-0) and HCO$^{+}$(1-0), to $^{13}$CO (1-0) are 3-4 times higher in ultra/luminous infrared galaxies (U/LIRGs) than in non-LIRGs in our sample. These high line ratios could be explained by the deficiency of $^{13}$CO and high dense gas fractions s","authors_text":"Daisuke Iono, Daniel Rosa-Gonzalez, Junko Ueda, Min S. Yun, Olga Vega, Ronald L. Snell, Takuji Yamashita, Tomonari Michiyama, Toshiki Saito, Yoshimasa Watanabe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-13T20:00:16Z","title":"Cold Molecular Gas in Merger Remnants. II. The properties of dense molecular gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.06290","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:d224d7de259076b320efcd47ac8c1af6514f333ca614dc02f3832cefc5db5f18","target":"record","created_at":"2026-07-05T03:40:45Z","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":"87fd6b49c49d2316d83ed61dff9cea81ffb8937e54828c10990520554b1bf157","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-13T20:00:16Z","title_canon_sha256":"c45b4fcb6cac9ac924a3f16314f6917432bd40cee0e61a0926a8d10bda5a8f4f"},"schema_version":"1.0","source":{"id":"2109.06290","kind":"arxiv","version":1}},"canonical_sha256":"6eea8a24ab9c90dddbebff059941ad0af3295d58eec3e43633fb81048ccc2826","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6eea8a24ab9c90dddbebff059941ad0af3295d58eec3e43633fb81048ccc2826","first_computed_at":"2026-07-05T03:40:45.456132Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:40:45.456132Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mLIaO3n7i70APcPXiN4De2nSLUGPuFeP+m7QhJG+fabb2zS620cgRQYhi3e4eWJM+50YNHw9jV+i4++56kenCw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:40:45.456550Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.06290","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d224d7de259076b320efcd47ac8c1af6514f333ca614dc02f3832cefc5db5f18","sha256:db722e58ecfa72342df9521b72a29631fe967ed863661d837784ff09f2ecdc2a"],"state_sha256":"a2050d494820c3c688cb7cd0606cd4c6af5bfde38949bdbc3d83213aa03d8f63"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hh2KLZgodOOERFvZEz2GG6QOblrLQJdDxI71SMqcEaVdUx/uhNt06usi2evLIAuUjtF/rPo0xSnNiaGGEcCuBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T17:38:33.247245Z","bundle_sha256":"b662fdf7389cabb01c95d0fe74a38c07b93c7d3f6c39588543d1e389a968a12e"}}