{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ABIDHCJYPW3ZIE47V467LW5QX6","short_pith_number":"pith:ABIDHCJY","canonical_record":{"source":{"id":"2606.19282","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-17T17:00:12Z","cross_cats_sorted":[],"title_canon_sha256":"7055903188fce9039ea9fb10682518877c5f3a54f548bb542345dd6b73742bf2","abstract_canon_sha256":"36a3209d62ca73cf51496a4f543dd56886e82ba73f2f6a7761555e76e254d847"},"schema_version":"1.0"},"canonical_sha256":"00503389387db794139faf3df5dbb0bf908ae8cdf1f05f04311fd83cb7dd79ea","source":{"kind":"arxiv","id":"2606.19282","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19282","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19282v1","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19282","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"pith_short_12","alias_value":"ABIDHCJYPW3Z","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"pith_short_16","alias_value":"ABIDHCJYPW3ZIE47","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"pith_short_8","alias_value":"ABIDHCJY","created_at":"2026-06-19T16:12:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ABIDHCJYPW3ZIE47V467LW5QX6","target":"record","payload":{"canonical_record":{"source":{"id":"2606.19282","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-17T17:00:12Z","cross_cats_sorted":[],"title_canon_sha256":"7055903188fce9039ea9fb10682518877c5f3a54f548bb542345dd6b73742bf2","abstract_canon_sha256":"36a3209d62ca73cf51496a4f543dd56886e82ba73f2f6a7761555e76e254d847"},"schema_version":"1.0"},"canonical_sha256":"00503389387db794139faf3df5dbb0bf908ae8cdf1f05f04311fd83cb7dd79ea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:12:09.657673Z","signature_b64":"gJo2GNXLNlsezSJ7SvF+qQLEUD4hhV53krZTPjIx1C/ZtNQKtfcE8avWiRI0IzZ8ptJFIgGyxZHXTsbbJ6kWAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00503389387db794139faf3df5dbb0bf908ae8cdf1f05f04311fd83cb7dd79ea","last_reissued_at":"2026-06-19T16:12:09.657328Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:12:09.657328Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.19282","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":"2026-06-19T16:12:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"huzgAkycm8DfYInAMZZrUPxyHBzQctzHDotac8EaNNo0ZteJmvvMPJRlXMuq0fo7YnR0lWXmAy7EcI+TWtPIAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T14:37:55.237307Z"},"content_sha256":"dd616243c9bc9d6c4174e6947dd0d70eb54469850f1da88714284030b2a4e159","schema_version":"1.0","event_id":"sha256:dd616243c9bc9d6c4174e6947dd0d70eb54469850f1da88714284030b2a4e159"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ABIDHCJYPW3ZIE47V467LW5QX6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The first detection of dense gas in a massive main-sequence galaxy at cosmic noon","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alvio Renzini, Capucine Barfety, Claudia Pulsoni, Daizhong Liu, Dieter Lutz, Frank Eisenhauer, Giovanni Mazzolari, Giulia Tozzi, Hannah \\\"Ubler, Jean-Baptiste Jolly, Jianhang Chen, Juan Manuel Espejo Salcedo, Lilian L. Lee, Linda Tacconi, Minju M. Lee, Natascha M. F\\\"orster Schreiber, Reinhard Genzel, Ric Davies, Rodrigo Herrera Camus, Sebasti\\'an Arriagada-Neira, Stavros Pastras","submitted_at":"2026-06-17T17:00:12Z","abstract_excerpt":"Dense gas is the direct fuel for star formation, but measuring it has long been difficult at z>2, especially in typical star-forming main-sequence galaxies. In this work, we report the first detection of HNC (J = 5--4) and CN (N = 4--3) emission in a massive main-sequence galaxy, BX610, at z=2.21. The velocity integrated emission of HNC(5--4)+CN(4--3) is concentrated in the galactic centre, coincident with the region of ongoing intense star formation. Based on line decomposition, we measure a line flux ratio HNC(5--4)/CN(4--3) of $1.05\\pm0.23$, similar to that of starburst galaxies at comparab"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19282","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/2606.19282/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":"2026-06-19T16:12:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"78hASXeyTTrjJF0EacCI69CpJ0Ltn9FN+ndAkGsKJu8lfhNau+3YqdLh/f9ZjbqUX4/b1WhnZcx66lxrgAw1Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T14:37:55.237702Z"},"content_sha256":"a57c1b49125f34a396f1405eead4d97099d435148182b115bf6c31c147fad2f5","schema_version":"1.0","event_id":"sha256:a57c1b49125f34a396f1405eead4d97099d435148182b115bf6c31c147fad2f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ABIDHCJYPW3ZIE47V467LW5QX6/bundle.json","state_url":"https://pith.science/pith/ABIDHCJYPW3ZIE47V467LW5QX6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ABIDHCJYPW3ZIE47V467LW5QX6/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":"2026-06-29T14:37:55Z","links":{"resolver":"https://pith.science/pith/ABIDHCJYPW3ZIE47V467LW5QX6","bundle":"https://pith.science/pith/ABIDHCJYPW3ZIE47V467LW5QX6/bundle.json","state":"https://pith.science/pith/ABIDHCJYPW3ZIE47V467LW5QX6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ABIDHCJYPW3ZIE47V467LW5QX6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ABIDHCJYPW3ZIE47V467LW5QX6","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":"36a3209d62ca73cf51496a4f543dd56886e82ba73f2f6a7761555e76e254d847","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-17T17:00:12Z","title_canon_sha256":"7055903188fce9039ea9fb10682518877c5f3a54f548bb542345dd6b73742bf2"},"schema_version":"1.0","source":{"id":"2606.19282","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19282","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19282v1","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19282","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"pith_short_12","alias_value":"ABIDHCJYPW3Z","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"pith_short_16","alias_value":"ABIDHCJYPW3ZIE47","created_at":"2026-06-19T16:12:09Z"},{"alias_kind":"pith_short_8","alias_value":"ABIDHCJY","created_at":"2026-06-19T16:12:09Z"}],"graph_snapshots":[{"event_id":"sha256:a57c1b49125f34a396f1405eead4d97099d435148182b115bf6c31c147fad2f5","target":"graph","created_at":"2026-06-19T16:12:09Z","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/2606.19282/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Dense gas is the direct fuel for star formation, but measuring it has long been difficult at z>2, especially in typical star-forming main-sequence galaxies. In this work, we report the first detection of HNC (J = 5--4) and CN (N = 4--3) emission in a massive main-sequence galaxy, BX610, at z=2.21. The velocity integrated emission of HNC(5--4)+CN(4--3) is concentrated in the galactic centre, coincident with the region of ongoing intense star formation. Based on line decomposition, we measure a line flux ratio HNC(5--4)/CN(4--3) of $1.05\\pm0.23$, similar to that of starburst galaxies at comparab","authors_text":"Alvio Renzini, Capucine Barfety, Claudia Pulsoni, Daizhong Liu, Dieter Lutz, Frank Eisenhauer, Giovanni Mazzolari, Giulia Tozzi, Hannah \\\"Ubler, Jean-Baptiste Jolly, Jianhang Chen, Juan Manuel Espejo Salcedo, Lilian L. Lee, Linda Tacconi, Minju M. Lee, Natascha M. F\\\"orster Schreiber, Reinhard Genzel, Ric Davies, Rodrigo Herrera Camus, Sebasti\\'an Arriagada-Neira, Stavros Pastras","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-17T17:00:12Z","title":"The first detection of dense gas in a massive main-sequence galaxy at cosmic noon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19282","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:dd616243c9bc9d6c4174e6947dd0d70eb54469850f1da88714284030b2a4e159","target":"record","created_at":"2026-06-19T16:12:09Z","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":"36a3209d62ca73cf51496a4f543dd56886e82ba73f2f6a7761555e76e254d847","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-17T17:00:12Z","title_canon_sha256":"7055903188fce9039ea9fb10682518877c5f3a54f548bb542345dd6b73742bf2"},"schema_version":"1.0","source":{"id":"2606.19282","kind":"arxiv","version":1}},"canonical_sha256":"00503389387db794139faf3df5dbb0bf908ae8cdf1f05f04311fd83cb7dd79ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00503389387db794139faf3df5dbb0bf908ae8cdf1f05f04311fd83cb7dd79ea","first_computed_at":"2026-06-19T16:12:09.657328Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:12:09.657328Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gJo2GNXLNlsezSJ7SvF+qQLEUD4hhV53krZTPjIx1C/ZtNQKtfcE8avWiRI0IzZ8ptJFIgGyxZHXTsbbJ6kWAw==","signature_status":"signed_v1","signed_at":"2026-06-19T16:12:09.657673Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.19282","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd616243c9bc9d6c4174e6947dd0d70eb54469850f1da88714284030b2a4e159","sha256:a57c1b49125f34a396f1405eead4d97099d435148182b115bf6c31c147fad2f5"],"state_sha256":"e47f57b5d329497e92674a3a90c70e79ecf9b49a8664c7d4dde19691029d3c4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qRppQN7OE5JiJcZujk/KDNxSamo/VxYbR7/+4ibxnbvLBZE7OEHNW86bZq3VzQmHrgzbwWPFmgUd29HO3EDFCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T14:37:55.239706Z","bundle_sha256":"daeb9682cc85c15898fd4e37d4f10c13bda7281b95cb3b69b095d86d63d9ab56"}}