{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:PE3VIW3SHYNFPZYYMTKZU7I52A","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":"58382db07f92300a778a1649f834872a3baadccc59630f661f976506c4205477","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-08-30T04:40:36Z","title_canon_sha256":"e9f8dfb0fc43d172372b39ed38d3aab0ce70c594e03b983baf2b9ad23070c882"},"schema_version":"1.0","source":{"id":"2208.13983","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.13983","created_at":"2026-07-05T05:10:11Z"},{"alias_kind":"arxiv_version","alias_value":"2208.13983v1","created_at":"2026-07-05T05:10:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.13983","created_at":"2026-07-05T05:10:11Z"},{"alias_kind":"pith_short_12","alias_value":"PE3VIW3SHYNF","created_at":"2026-07-05T05:10:11Z"},{"alias_kind":"pith_short_16","alias_value":"PE3VIW3SHYNFPZYY","created_at":"2026-07-05T05:10:11Z"},{"alias_kind":"pith_short_8","alias_value":"PE3VIW3S","created_at":"2026-07-05T05:10:11Z"}],"graph_snapshots":[{"event_id":"sha256:b1c77bad35c0049daa349422940a0e1893e764e190d330fa6e702134db4fdd53","target":"graph","created_at":"2026-07-05T05:10:11Z","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/2208.13983/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Centers of starburst galaxies may be characterized by a specific gas and ice chemistry due to their gas dynamics and the presence of various ice desorption mechanisms. This may result in a peculiar observable composition. We analyze abundances of $CO_2$, a reliable tracer of ice chemistry, from data collected as part of the ALMA large program ALCHEMI, a wide-frequency spectral scan toward the starburst galaxy NGC~253 with an angular resolution of 1.6$''$. We constrain the $CO_2$ abundances in the gas phase using its protonated form $HOCO^+$. The distribution of $HOCO^+$ is similar to that of m","authors_text":"Christian Henkel, David Meier, Jeff Mangum, Kazushi Sakamoto, Kim Emig, Kouichiro Nakanishi, Kunihiko Tanaka, Laura Colzi, Mitsuyoshi Yamagishi, Nanase Harada, Paul van der Werf, Pedro Humire, Rebeca Aladro, Ruben Herrero-Illana, Sebastian Muller, Sergio Martin, Victor Rivilla, Yuki Yoshimura","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-08-30T04:40:36Z","title":"ALCHEMI finds a \"shocking\" carbon footprint in the starburst galaxy NGC~253"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.13983","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:ac785dcd701c377b880854bb97362852a5af2e9dfe6becc3885c2c20eb0fbc0d","target":"record","created_at":"2026-07-05T05:10:11Z","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":"58382db07f92300a778a1649f834872a3baadccc59630f661f976506c4205477","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-08-30T04:40:36Z","title_canon_sha256":"e9f8dfb0fc43d172372b39ed38d3aab0ce70c594e03b983baf2b9ad23070c882"},"schema_version":"1.0","source":{"id":"2208.13983","kind":"arxiv","version":1}},"canonical_sha256":"7937545b723e1a57e71864d59a7d1dd03d664187ff96700f707f773c5b4b0b32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7937545b723e1a57e71864d59a7d1dd03d664187ff96700f707f773c5b4b0b32","first_computed_at":"2026-07-05T05:10:11.253050Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:10:11.253050Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7v5SMHHsjoSpxkmWDiVJh9FCVUybnbDbXT+2XgUvtFKiFDlF4Ek3epUCd/g/eQydd2yl2JStxHzjEtnpfEg5CA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:10:11.253406Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.13983","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac785dcd701c377b880854bb97362852a5af2e9dfe6becc3885c2c20eb0fbc0d","sha256:b1c77bad35c0049daa349422940a0e1893e764e190d330fa6e702134db4fdd53"],"state_sha256":"8c54c9db7f7d8a959a3f608e55676352dd29e38d27e86ef8116caf828c56232e"}