{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:PA4UWY6PKXUIOZJYNZYXZX4XT5","short_pith_number":"pith:PA4UWY6P","canonical_record":{"source":{"id":"1609.03051","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-09-10T13:34:51Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e7dff09f4aa5ef274056c13d842c9c0bd0251320fdec6906860dc2dff6e16404","abstract_canon_sha256":"21c20b9bebbff5e7022ebeeed5cc097837f1992427e6ed10eb6bb2dbb3fced2a"},"schema_version":"1.0"},"canonical_sha256":"78394b63cf55e88765386e717cdf979f71126c87e5034102fd46487d8ef5c880","source":{"kind":"arxiv","id":"1609.03051","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.03051","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"arxiv_version","alias_value":"1609.03051v2","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.03051","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"pith_short_12","alias_value":"PA4UWY6PKXUI","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PA4UWY6PKXUIOZJY","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PA4UWY6P","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:PA4UWY6PKXUIOZJYNZYXZX4XT5","target":"record","payload":{"canonical_record":{"source":{"id":"1609.03051","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-09-10T13:34:51Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e7dff09f4aa5ef274056c13d842c9c0bd0251320fdec6906860dc2dff6e16404","abstract_canon_sha256":"21c20b9bebbff5e7022ebeeed5cc097837f1992427e6ed10eb6bb2dbb3fced2a"},"schema_version":"1.0"},"canonical_sha256":"78394b63cf55e88765386e717cdf979f71126c87e5034102fd46487d8ef5c880","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:22.133035Z","signature_b64":"md9F4DMlWCgHTpoY3fUAs6+GzrBImhQsidxIcu2q309hxJma788RQEdWuw2GebtYxTIPY0oIfTWxuYLsaKvoAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78394b63cf55e88765386e717cdf979f71126c87e5034102fd46487d8ef5c880","last_reissued_at":"2026-05-18T01:01:22.132414Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:22.132414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.03051","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dcfty+35heq9AmCa6C36grQ24fskSKwegXyAq4ba74XL6v+bD11H9EgUOqTo6qzxipPQhNntFSHg948q9LDcBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T10:43:17.791928Z"},"content_sha256":"2bd5056de7d413de1b009dd2fe25687da93a153c6191e17a72ddfbc3575f2387","schema_version":"1.0","event_id":"sha256:2bd5056de7d413de1b009dd2fe25687da93a153c6191e17a72ddfbc3575f2387"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:PA4UWY6PKXUIOZJYNZYXZX4XT5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Molecular Lines of 13 Galactic Infrared Bubble Regions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Bo Zhang, Deng-Rong Lu, Qing-Zeng Yan, Xi Chen, Ye Xu, Zheng-Hong Tang","submitted_at":"2016-09-10T13:34:51Z","abstract_excerpt":"We investigated the physical properties of molecular clouds and star formation processes around infrared bubbles which are essentially expanding HII regions. We performed observations of 13 galactic infrared bubble fields containing 18 bubbles. Five molecular lines, 12CO (J=1-0), 13CO (J=1-0), C18O(J=1-0), HCN (J=1-0), and HCO+ (J=1-0), were observed, and several publicly available surveys, GLIMPSE, MIPSGAL, ATLASGAL, BGPS, VGPS, MAGPIS, and NVSS, were used for comparison. We find that these bubbles are generally connected with molecular clouds, most of which are giant. Several bubble regions "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.03051","kind":"arxiv","version":2},"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":"2026-05-18T01:01:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ed5+JtCtMGsiFodiYtvgVL1VSO7jQPSZ5Qv3kQ384XHxrwCFY4Fhz554oA5XFKtztJRibv8vebEEUxPJ4m8pDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T10:43:17.792270Z"},"content_sha256":"64afab00c2ffc9bf73c3c7f3872d0d71ef2a79df9ad89465308b1b0c25ab5d03","schema_version":"1.0","event_id":"sha256:64afab00c2ffc9bf73c3c7f3872d0d71ef2a79df9ad89465308b1b0c25ab5d03"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PA4UWY6PKXUIOZJYNZYXZX4XT5/bundle.json","state_url":"https://pith.science/pith/PA4UWY6PKXUIOZJYNZYXZX4XT5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PA4UWY6PKXUIOZJYNZYXZX4XT5/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":"2026-06-11T10:43:17Z","links":{"resolver":"https://pith.science/pith/PA4UWY6PKXUIOZJYNZYXZX4XT5","bundle":"https://pith.science/pith/PA4UWY6PKXUIOZJYNZYXZX4XT5/bundle.json","state":"https://pith.science/pith/PA4UWY6PKXUIOZJYNZYXZX4XT5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PA4UWY6PKXUIOZJYNZYXZX4XT5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:PA4UWY6PKXUIOZJYNZYXZX4XT5","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":"21c20b9bebbff5e7022ebeeed5cc097837f1992427e6ed10eb6bb2dbb3fced2a","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-09-10T13:34:51Z","title_canon_sha256":"e7dff09f4aa5ef274056c13d842c9c0bd0251320fdec6906860dc2dff6e16404"},"schema_version":"1.0","source":{"id":"1609.03051","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.03051","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"arxiv_version","alias_value":"1609.03051v2","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.03051","created_at":"2026-05-18T01:01:22Z"},{"alias_kind":"pith_short_12","alias_value":"PA4UWY6PKXUI","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PA4UWY6PKXUIOZJY","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PA4UWY6P","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:64afab00c2ffc9bf73c3c7f3872d0d71ef2a79df9ad89465308b1b0c25ab5d03","target":"graph","created_at":"2026-05-18T01:01:22Z","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":"We investigated the physical properties of molecular clouds and star formation processes around infrared bubbles which are essentially expanding HII regions. We performed observations of 13 galactic infrared bubble fields containing 18 bubbles. Five molecular lines, 12CO (J=1-0), 13CO (J=1-0), C18O(J=1-0), HCN (J=1-0), and HCO+ (J=1-0), were observed, and several publicly available surveys, GLIMPSE, MIPSGAL, ATLASGAL, BGPS, VGPS, MAGPIS, and NVSS, were used for comparison. We find that these bubbles are generally connected with molecular clouds, most of which are giant. Several bubble regions ","authors_text":"Bo Zhang, Deng-Rong Lu, Qing-Zeng Yan, Xi Chen, Ye Xu, Zheng-Hong Tang","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-09-10T13:34:51Z","title":"Molecular Lines of 13 Galactic Infrared Bubble Regions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.03051","kind":"arxiv","version":2},"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":"sha256:2bd5056de7d413de1b009dd2fe25687da93a153c6191e17a72ddfbc3575f2387","target":"record","created_at":"2026-05-18T01:01:22Z","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":"21c20b9bebbff5e7022ebeeed5cc097837f1992427e6ed10eb6bb2dbb3fced2a","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-09-10T13:34:51Z","title_canon_sha256":"e7dff09f4aa5ef274056c13d842c9c0bd0251320fdec6906860dc2dff6e16404"},"schema_version":"1.0","source":{"id":"1609.03051","kind":"arxiv","version":2}},"canonical_sha256":"78394b63cf55e88765386e717cdf979f71126c87e5034102fd46487d8ef5c880","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78394b63cf55e88765386e717cdf979f71126c87e5034102fd46487d8ef5c880","first_computed_at":"2026-05-18T01:01:22.132414Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:22.132414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"md9F4DMlWCgHTpoY3fUAs6+GzrBImhQsidxIcu2q309hxJma788RQEdWuw2GebtYxTIPY0oIfTWxuYLsaKvoAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:22.133035Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.03051","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2bd5056de7d413de1b009dd2fe25687da93a153c6191e17a72ddfbc3575f2387","sha256:64afab00c2ffc9bf73c3c7f3872d0d71ef2a79df9ad89465308b1b0c25ab5d03"],"state_sha256":"3a680e3ff8986ca5aef01f3760f6a4ca1558ae83ac4c1fa65c145913a8fec171"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nvJ3lXtJELjCZGXQn+JVoeZGnob7H4zRnf45x8aUmoAVXFIaUJS94m5599nCukr8vVLOg5WT6oq8aW7SEbfyCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T10:43:17.794336Z","bundle_sha256":"6012f8289189020aff91837fd58bd211f36d9d436c231ed858692e9b00c47bac"}}