{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:QEOV4FSMJSH37ME72E2F6NCNO4","short_pith_number":"pith:QEOV4FSM","canonical_record":{"source":{"id":"1510.06880","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-23T10:21:04Z","cross_cats_sorted":[],"title_canon_sha256":"a62e9a37b059fdeaecee716e512add880a632bc980996b196a6d921feff482c1","abstract_canon_sha256":"56d23c9d77f4a8339729de50f63ccc6e9724f58bf0464e61c15b249de455011b"},"schema_version":"1.0"},"canonical_sha256":"811d5e164c4c8fbfb09fd1345f344d773e4088390bbf32dc9e252780d5464a43","source":{"kind":"arxiv","id":"1510.06880","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.06880","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"arxiv_version","alias_value":"1510.06880v1","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06880","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"pith_short_12","alias_value":"QEOV4FSMJSH3","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QEOV4FSMJSH37ME7","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QEOV4FSM","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:QEOV4FSMJSH37ME72E2F6NCNO4","target":"record","payload":{"canonical_record":{"source":{"id":"1510.06880","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-23T10:21:04Z","cross_cats_sorted":[],"title_canon_sha256":"a62e9a37b059fdeaecee716e512add880a632bc980996b196a6d921feff482c1","abstract_canon_sha256":"56d23c9d77f4a8339729de50f63ccc6e9724f58bf0464e61c15b249de455011b"},"schema_version":"1.0"},"canonical_sha256":"811d5e164c4c8fbfb09fd1345f344d773e4088390bbf32dc9e252780d5464a43","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:22.817143Z","signature_b64":"UsJWy2o6R+zc/u4JCsy9lWwe20lzjA6CHClbBd85gpAC/i4gt+94FmNwlzB02NGCfX1Kg8S705BQ8e3n5l17CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"811d5e164c4c8fbfb09fd1345f344d773e4088390bbf32dc9e252780d5464a43","last_reissued_at":"2026-05-18T01:29:22.816511Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:22.816511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.06880","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":"2026-05-18T01:29:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kHiaYNSs9Q+AiQAMJ/fSZUWauORKyGjAfet9xQNsJnN1x5ig81iwzCvSHJNE1qaVHgcJwA51na2UHcPJ+v7wDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T09:39:28.911093Z"},"content_sha256":"b204602740440789abbb93476d9a160f91843ebf60c4b2ee5b90ee42222b712a","schema_version":"1.0","event_id":"sha256:b204602740440789abbb93476d9a160f91843ebf60c4b2ee5b90ee42222b712a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:QEOV4FSMJSH37ME72E2F6NCNO4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Solving the excitation and chemical abundances in shocks: the case of HH1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Nisini, F. Bacciotti, L. Podio, S. Antoniucci, T. Giannini","submitted_at":"2015-10-23T10:21:04Z","abstract_excerpt":"We present deep spectroscopic (3600 - 24700 A) X-shooter observations of the bright Herbig-Haro object HH1, one of the best laboratories to study the chemical and physical modifications caused by protostellar shocks on the natal cloud. We observe atomic fine structure lines, HI, and He, recombination lines and H_2, ro-vibrational lines (more than 500 detections in total). Line emission was analyzed by means of Non Local Thermal Equilibiurm codes to derive the electron temperature and density, and, for the first time, we are able to accurately probe different physical regimes behind a dissociat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06880","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":"2026-05-18T01:29:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jyRZzLkaBjneaXrlPJEbbOTBbNZgjd+iHc44pHCQrlekIYRR1P+gdGE6t6oIOhCmV5EEGvNeoF+cxQrg9s0nDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T09:39:28.911450Z"},"content_sha256":"dd664a4dd0337b7af0ecf6252596d74357e2011470ed39245685c7111d691a49","schema_version":"1.0","event_id":"sha256:dd664a4dd0337b7af0ecf6252596d74357e2011470ed39245685c7111d691a49"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QEOV4FSMJSH37ME72E2F6NCNO4/bundle.json","state_url":"https://pith.science/pith/QEOV4FSMJSH37ME72E2F6NCNO4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QEOV4FSMJSH37ME72E2F6NCNO4/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":"2026-06-28T09:39:28Z","links":{"resolver":"https://pith.science/pith/QEOV4FSMJSH37ME72E2F6NCNO4","bundle":"https://pith.science/pith/QEOV4FSMJSH37ME72E2F6NCNO4/bundle.json","state":"https://pith.science/pith/QEOV4FSMJSH37ME72E2F6NCNO4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QEOV4FSMJSH37ME72E2F6NCNO4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QEOV4FSMJSH37ME72E2F6NCNO4","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":"56d23c9d77f4a8339729de50f63ccc6e9724f58bf0464e61c15b249de455011b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-23T10:21:04Z","title_canon_sha256":"a62e9a37b059fdeaecee716e512add880a632bc980996b196a6d921feff482c1"},"schema_version":"1.0","source":{"id":"1510.06880","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.06880","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"arxiv_version","alias_value":"1510.06880v1","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06880","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"pith_short_12","alias_value":"QEOV4FSMJSH3","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QEOV4FSMJSH37ME7","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QEOV4FSM","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:dd664a4dd0337b7af0ecf6252596d74357e2011470ed39245685c7111d691a49","target":"graph","created_at":"2026-05-18T01:29:22Z","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 present deep spectroscopic (3600 - 24700 A) X-shooter observations of the bright Herbig-Haro object HH1, one of the best laboratories to study the chemical and physical modifications caused by protostellar shocks on the natal cloud. We observe atomic fine structure lines, HI, and He, recombination lines and H_2, ro-vibrational lines (more than 500 detections in total). Line emission was analyzed by means of Non Local Thermal Equilibiurm codes to derive the electron temperature and density, and, for the first time, we are able to accurately probe different physical regimes behind a dissociat","authors_text":"B. Nisini, F. Bacciotti, L. Podio, S. Antoniucci, T. Giannini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-23T10:21:04Z","title":"Solving the excitation and chemical abundances in shocks: the case of HH1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06880","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:b204602740440789abbb93476d9a160f91843ebf60c4b2ee5b90ee42222b712a","target":"record","created_at":"2026-05-18T01:29:22Z","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":"56d23c9d77f4a8339729de50f63ccc6e9724f58bf0464e61c15b249de455011b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-23T10:21:04Z","title_canon_sha256":"a62e9a37b059fdeaecee716e512add880a632bc980996b196a6d921feff482c1"},"schema_version":"1.0","source":{"id":"1510.06880","kind":"arxiv","version":1}},"canonical_sha256":"811d5e164c4c8fbfb09fd1345f344d773e4088390bbf32dc9e252780d5464a43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"811d5e164c4c8fbfb09fd1345f344d773e4088390bbf32dc9e252780d5464a43","first_computed_at":"2026-05-18T01:29:22.816511Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:22.816511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UsJWy2o6R+zc/u4JCsy9lWwe20lzjA6CHClbBd85gpAC/i4gt+94FmNwlzB02NGCfX1Kg8S705BQ8e3n5l17CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:22.817143Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.06880","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b204602740440789abbb93476d9a160f91843ebf60c4b2ee5b90ee42222b712a","sha256:dd664a4dd0337b7af0ecf6252596d74357e2011470ed39245685c7111d691a49"],"state_sha256":"fccf38e1ad7c230ef6c0658103d989f80072a1e4e627a4704c9a3acc4eff1ef5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tIC/LudqUoaLbJlBzzNkQlsuNW6h+FckWTadEsjfSGo3NPYaMBDUulVlG5x+AL1DdDaedCsqNlK9JB1EFTomAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T09:39:28.913300Z","bundle_sha256":"a4da2feb4bb6a2c917e2ef5f93ae706dd9a012e0da8f5e3a57140a965bde11bd"}}