{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:Q4BYX6QBC62YG542GO3BRKEVCZ","short_pith_number":"pith:Q4BYX6QB","canonical_record":{"source":{"id":"1701.01604","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-06T11:50:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e63313cbb7986bb4e71446f1742ad089e8c155d528f7c4e0011987e399164df4","abstract_canon_sha256":"4599884ae60a465e0c80af6bc17b505ee8de67d52658766fb94c684112777145"},"schema_version":"1.0"},"canonical_sha256":"87038bfa0117b583779a33b618a8951652489bfb6256e3887b4ce7ac3b01b641","source":{"kind":"arxiv","id":"1701.01604","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01604","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01604v1","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01604","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"Q4BYX6QBC62Y","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q4BYX6QBC62YG542","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q4BYX6QB","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:Q4BYX6QBC62YG542GO3BRKEVCZ","target":"record","payload":{"canonical_record":{"source":{"id":"1701.01604","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-06T11:50:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e63313cbb7986bb4e71446f1742ad089e8c155d528f7c4e0011987e399164df4","abstract_canon_sha256":"4599884ae60a465e0c80af6bc17b505ee8de67d52658766fb94c684112777145"},"schema_version":"1.0"},"canonical_sha256":"87038bfa0117b583779a33b618a8951652489bfb6256e3887b4ce7ac3b01b641","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:15.460564Z","signature_b64":"H9fI6ChDJpXjWOjsARQU+S5uR17eKGduLyHOscnVtE9L/KGpVkyHx2AOKg9penUxRaOu7jj85o+QWXmbfVmKDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87038bfa0117b583779a33b618a8951652489bfb6256e3887b4ce7ac3b01b641","last_reissued_at":"2026-05-18T00:48:15.459916Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:15.459916Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.01604","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":"2026-05-18T00:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dpgE7OvNo11kuIIcpoLSgpUxPicMae3WtcMcFlWZzBZxTP5dKKxQ21w+Cm3dsDyS/bhrJM9s/3qfGC4soFTWCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T09:28:14.787538Z"},"content_sha256":"893e60042ed2cc2e0ea3c59c5be37aa3baa5aad6fb7f16a990b3822c86025bef","schema_version":"1.0","event_id":"sha256:893e60042ed2cc2e0ea3c59c5be37aa3baa5aad6fb7f16a990b3822c86025bef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:Q4BYX6QBC62YG542GO3BRKEVCZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kinetic temperature of massive star forming molecular clumps measured with formaldehyde. II. The Large Magellanic Cloud","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"C. Henkel, C. -H. R. Chen, D. L. Li, J. Esimbek, J. J. Zhou, K. M. Menten, R. Indebetouw, X. D. Tang, X. W. Zheng, Y. X. He, Y. Yuan","submitted_at":"2017-01-06T11:50:46Z","abstract_excerpt":"The Large Magellanic Cloud (LMC), the closest star forming galaxy with low metallicity, provides an ideal laboratory to study star formation in such an environment. The classical dense molecular gas thermometer NH3 is rarely available in a low metallicity environment because of photoionization and a lack of nitrogen atoms. Our goal is to directly measure the gas kinetic temperature with formaldehyde toward six star-forming regions in the LMC. Three rotational transitions of para-H2CO near 218 GHz were observed with the APEX 12m telescope toward six star forming regions in the LMC. Those data a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01604","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":"2026-05-18T00:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B7uf68YwsY5UdGhvKCV+hdAGdCnGLzoS3pyeNtDSXXOTrhYd/11OJPVjxduyxe0eFTvYTYzKpcq8vrrZwVCVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T09:28:14.788208Z"},"content_sha256":"d311ba8b1b11589bcbed8002bb5ad442a3a7a8c4f57fbd7019de52de1ebb0a0a","schema_version":"1.0","event_id":"sha256:d311ba8b1b11589bcbed8002bb5ad442a3a7a8c4f57fbd7019de52de1ebb0a0a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q4BYX6QBC62YG542GO3BRKEVCZ/bundle.json","state_url":"https://pith.science/pith/Q4BYX6QBC62YG542GO3BRKEVCZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q4BYX6QBC62YG542GO3BRKEVCZ/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":"2026-05-23T09:28:14Z","links":{"resolver":"https://pith.science/pith/Q4BYX6QBC62YG542GO3BRKEVCZ","bundle":"https://pith.science/pith/Q4BYX6QBC62YG542GO3BRKEVCZ/bundle.json","state":"https://pith.science/pith/Q4BYX6QBC62YG542GO3BRKEVCZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q4BYX6QBC62YG542GO3BRKEVCZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:Q4BYX6QBC62YG542GO3BRKEVCZ","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":"4599884ae60a465e0c80af6bc17b505ee8de67d52658766fb94c684112777145","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-06T11:50:46Z","title_canon_sha256":"e63313cbb7986bb4e71446f1742ad089e8c155d528f7c4e0011987e399164df4"},"schema_version":"1.0","source":{"id":"1701.01604","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01604","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01604v1","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01604","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"Q4BYX6QBC62Y","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q4BYX6QBC62YG542","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q4BYX6QB","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:d311ba8b1b11589bcbed8002bb5ad442a3a7a8c4f57fbd7019de52de1ebb0a0a","target":"graph","created_at":"2026-05-18T00:48:15Z","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":"The Large Magellanic Cloud (LMC), the closest star forming galaxy with low metallicity, provides an ideal laboratory to study star formation in such an environment. The classical dense molecular gas thermometer NH3 is rarely available in a low metallicity environment because of photoionization and a lack of nitrogen atoms. Our goal is to directly measure the gas kinetic temperature with formaldehyde toward six star-forming regions in the LMC. Three rotational transitions of para-H2CO near 218 GHz were observed with the APEX 12m telescope toward six star forming regions in the LMC. Those data a","authors_text":"C. Henkel, C. -H. R. Chen, D. L. Li, J. Esimbek, J. J. Zhou, K. M. Menten, R. Indebetouw, X. D. Tang, X. W. Zheng, Y. X. He, Y. Yuan","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-06T11:50:46Z","title":"Kinetic temperature of massive star forming molecular clumps measured with formaldehyde. II. The Large Magellanic Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01604","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":"sha256:893e60042ed2cc2e0ea3c59c5be37aa3baa5aad6fb7f16a990b3822c86025bef","target":"record","created_at":"2026-05-18T00:48:15Z","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":"4599884ae60a465e0c80af6bc17b505ee8de67d52658766fb94c684112777145","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-06T11:50:46Z","title_canon_sha256":"e63313cbb7986bb4e71446f1742ad089e8c155d528f7c4e0011987e399164df4"},"schema_version":"1.0","source":{"id":"1701.01604","kind":"arxiv","version":1}},"canonical_sha256":"87038bfa0117b583779a33b618a8951652489bfb6256e3887b4ce7ac3b01b641","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"87038bfa0117b583779a33b618a8951652489bfb6256e3887b4ce7ac3b01b641","first_computed_at":"2026-05-18T00:48:15.459916Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:15.459916Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H9fI6ChDJpXjWOjsARQU+S5uR17eKGduLyHOscnVtE9L/KGpVkyHx2AOKg9penUxRaOu7jj85o+QWXmbfVmKDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:15.460564Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.01604","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:893e60042ed2cc2e0ea3c59c5be37aa3baa5aad6fb7f16a990b3822c86025bef","sha256:d311ba8b1b11589bcbed8002bb5ad442a3a7a8c4f57fbd7019de52de1ebb0a0a"],"state_sha256":"295442750315db8ce4752cf2d473c36c902cfdff821cee3b053c819f5ae42fcb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Dt206flUoSTpKT32DdVp44VTFdNqt6A+Y0QILvLNAtpexBxqJ6iRKKEwFXBmNPUarn6LafEC2sjmRRTttjTDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T09:28:14.791988Z","bundle_sha256":"ae5fb09f54c3a6494e5fab9bedc676a6312a9e4575ecde4105963ee7ae46fcdb"}}