{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:OBAQOA2YRHKB7KP4IRNVVRC4D5","short_pith_number":"pith:OBAQOA2Y","canonical_record":{"source":{"id":"2507.18823","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-24T21:48:35Z","cross_cats_sorted":[],"title_canon_sha256":"8607f6ec9662ef23677209048f0dce07d453f61b6e4a013ea69e548453b5681d","abstract_canon_sha256":"4bb0622693b3a9826d4d698bf0fdb6c5e0e27d07affa001617bbb494ad4198aa"},"schema_version":"1.0"},"canonical_sha256":"704107035889d41fa9fc445b5ac45c1f4805762c8bfde9246454f853fc8c7e4f","source":{"kind":"arxiv","id":"2507.18823","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.18823","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"arxiv_version","alias_value":"2507.18823v1","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.18823","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"pith_short_12","alias_value":"OBAQOA2YRHKB","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"pith_short_16","alias_value":"OBAQOA2YRHKB7KP4","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"pith_short_8","alias_value":"OBAQOA2Y","created_at":"2026-07-05T11:42:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:OBAQOA2YRHKB7KP4IRNVVRC4D5","target":"record","payload":{"canonical_record":{"source":{"id":"2507.18823","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-24T21:48:35Z","cross_cats_sorted":[],"title_canon_sha256":"8607f6ec9662ef23677209048f0dce07d453f61b6e4a013ea69e548453b5681d","abstract_canon_sha256":"4bb0622693b3a9826d4d698bf0fdb6c5e0e27d07affa001617bbb494ad4198aa"},"schema_version":"1.0"},"canonical_sha256":"704107035889d41fa9fc445b5ac45c1f4805762c8bfde9246454f853fc8c7e4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:42:58.934804Z","signature_b64":"9tyPPi59Eq5qW3U5mBQ0Pb8QTJJPHTXdmTtoah6KHy4QI5qRgxangtUoYwqDyeW8//5ihG87hp2ZRUj/LoVZCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"704107035889d41fa9fc445b5ac45c1f4805762c8bfde9246454f853fc8c7e4f","last_reissued_at":"2026-07-05T11:42:58.934391Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:42:58.934391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.18823","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":"2026-07-05T11:42:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j4VkfZgAAjbtGqS+k5+pTx6ClwrxZJxmWwLC4diEXiw9o4F0bezH0Ngg8ZWhAeJfoWU9edNqxOs1JBDbtIzWAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T08:34:09.854508Z"},"content_sha256":"688ce39da4b55bc02f119a3f9ee15c9a5786cf47388f016df5ca2edfd1d5db26","schema_version":"1.0","event_id":"sha256:688ce39da4b55bc02f119a3f9ee15c9a5786cf47388f016df5ca2edfd1d5db26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:OBAQOA2YRHKB7KP4IRNVVRC4D5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Arizona Molecular ISM Survey with the SMT: The Diverse Carbon Monoxide Line Ratios and Spectral Line Energy Distributions of Star Forming Galaxies","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Daniel P. Marrone, Garrett K. Keating, Ryan P. Keenan","submitted_at":"2025-07-24T21:48:35Z","abstract_excerpt":"The carbon monoxide (CO) spectral line energy distributions (SLEDs) of galaxies contain a wealth of information about conditions in their cold interstellar gas. Here we use galaxy-scale observations of the three lowest energy CO lines to determine SLEDs and line ratios in a sample of 47 nearby, predominantly star forming galaxies. We find systematic trend of higher gas excitation with increasing star formation rate (SFR) and SFR surface density ($\\Sigma_{\\rm SFR}$), with the range of variations being even larger than predicted by simulations. Power law fits of the CO line ratios as a function "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.18823","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/2507.18823/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":"2026-07-05T11:42:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NvI4/xa8wTDF4u6F2etklgoY5aBWjjhT9vJg6tCID/57uWf9KbI+6Z/PoEV8LLgE0A5Aaggp5guMbNwgaYgGCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T08:34:09.855028Z"},"content_sha256":"033cbb5108de4fc9182b834024f4ba96f781c4afe1b4e077c77981a7ad6eaebf","schema_version":"1.0","event_id":"sha256:033cbb5108de4fc9182b834024f4ba96f781c4afe1b4e077c77981a7ad6eaebf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OBAQOA2YRHKB7KP4IRNVVRC4D5/bundle.json","state_url":"https://pith.science/pith/OBAQOA2YRHKB7KP4IRNVVRC4D5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OBAQOA2YRHKB7KP4IRNVVRC4D5/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":"2026-08-08T08:34:09Z","links":{"resolver":"https://pith.science/pith/OBAQOA2YRHKB7KP4IRNVVRC4D5","bundle":"https://pith.science/pith/OBAQOA2YRHKB7KP4IRNVVRC4D5/bundle.json","state":"https://pith.science/pith/OBAQOA2YRHKB7KP4IRNVVRC4D5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OBAQOA2YRHKB7KP4IRNVVRC4D5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:OBAQOA2YRHKB7KP4IRNVVRC4D5","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":"4bb0622693b3a9826d4d698bf0fdb6c5e0e27d07affa001617bbb494ad4198aa","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-24T21:48:35Z","title_canon_sha256":"8607f6ec9662ef23677209048f0dce07d453f61b6e4a013ea69e548453b5681d"},"schema_version":"1.0","source":{"id":"2507.18823","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.18823","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"arxiv_version","alias_value":"2507.18823v1","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.18823","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"pith_short_12","alias_value":"OBAQOA2YRHKB","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"pith_short_16","alias_value":"OBAQOA2YRHKB7KP4","created_at":"2026-07-05T11:42:58Z"},{"alias_kind":"pith_short_8","alias_value":"OBAQOA2Y","created_at":"2026-07-05T11:42:58Z"}],"graph_snapshots":[{"event_id":"sha256:033cbb5108de4fc9182b834024f4ba96f781c4afe1b4e077c77981a7ad6eaebf","target":"graph","created_at":"2026-07-05T11:42:58Z","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/2507.18823/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The carbon monoxide (CO) spectral line energy distributions (SLEDs) of galaxies contain a wealth of information about conditions in their cold interstellar gas. Here we use galaxy-scale observations of the three lowest energy CO lines to determine SLEDs and line ratios in a sample of 47 nearby, predominantly star forming galaxies. We find systematic trend of higher gas excitation with increasing star formation rate (SFR) and SFR surface density ($\\Sigma_{\\rm SFR}$), with the range of variations being even larger than predicted by simulations. Power law fits of the CO line ratios as a function ","authors_text":"Daniel P. Marrone, Garrett K. Keating, Ryan P. Keenan","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-24T21:48:35Z","title":"The Arizona Molecular ISM Survey with the SMT: The Diverse Carbon Monoxide Line Ratios and Spectral Line Energy Distributions of Star Forming Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.18823","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":"sha256:688ce39da4b55bc02f119a3f9ee15c9a5786cf47388f016df5ca2edfd1d5db26","target":"record","created_at":"2026-07-05T11:42:58Z","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":"4bb0622693b3a9826d4d698bf0fdb6c5e0e27d07affa001617bbb494ad4198aa","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-24T21:48:35Z","title_canon_sha256":"8607f6ec9662ef23677209048f0dce07d453f61b6e4a013ea69e548453b5681d"},"schema_version":"1.0","source":{"id":"2507.18823","kind":"arxiv","version":1}},"canonical_sha256":"704107035889d41fa9fc445b5ac45c1f4805762c8bfde9246454f853fc8c7e4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"704107035889d41fa9fc445b5ac45c1f4805762c8bfde9246454f853fc8c7e4f","first_computed_at":"2026-07-05T11:42:58.934391Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:42:58.934391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9tyPPi59Eq5qW3U5mBQ0Pb8QTJJPHTXdmTtoah6KHy4QI5qRgxangtUoYwqDyeW8//5ihG87hp2ZRUj/LoVZCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:42:58.934804Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.18823","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:688ce39da4b55bc02f119a3f9ee15c9a5786cf47388f016df5ca2edfd1d5db26","sha256:033cbb5108de4fc9182b834024f4ba96f781c4afe1b4e077c77981a7ad6eaebf"],"state_sha256":"9e1ee606fcb834b494816eb2089e3ce41f94a43a6abeb84139e48c5831fdad6a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hjbKpqN6lDKIV8tlx93KnNnrvgz/umnwM46oq1g67WWOv1RUTGayW4HfpZRlufPhcLogxecjnBLV93zz5a6yCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T08:34:09.860175Z","bundle_sha256":"5a990cb775da77e75d039998a8c591858f7a84ab6152f0852a7a9d350c3135d4"}}