{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:CWDWME4G65Y3A3AN2YVUA5TXQU","short_pith_number":"pith:CWDWME4G","canonical_record":{"source":{"id":"1302.0767","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-02-04T17:36:58Z","cross_cats_sorted":[],"title_canon_sha256":"f4834c580d4b2786d7707a1d8e119d5d71c60c9a70b38dab17586928dedaf748","abstract_canon_sha256":"1a20a0fe9bd55b768f93f3bb500ade3488bb13f3398e1b5f9987ffe5edc431b6"},"schema_version":"1.0"},"canonical_sha256":"1587661386f771b06c0dd62b407677851b77db57b477fd784d88712f4c287272","source":{"kind":"arxiv","id":"1302.0767","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0767","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0767v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0767","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"CWDWME4G65Y3","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"CWDWME4G65Y3A3AN","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"CWDWME4G","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:CWDWME4G65Y3A3AN2YVUA5TXQU","target":"record","payload":{"canonical_record":{"source":{"id":"1302.0767","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-02-04T17:36:58Z","cross_cats_sorted":[],"title_canon_sha256":"f4834c580d4b2786d7707a1d8e119d5d71c60c9a70b38dab17586928dedaf748","abstract_canon_sha256":"1a20a0fe9bd55b768f93f3bb500ade3488bb13f3398e1b5f9987ffe5edc431b6"},"schema_version":"1.0"},"canonical_sha256":"1587661386f771b06c0dd62b407677851b77db57b477fd784d88712f4c287272","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:50.694992Z","signature_b64":"ZkZpLPnQy90LgqPY6ud/yoqOuJpa76wuYXBPISMcAywyZJ3Gk4mVqOUClQPiQ5nopVMTxARcQzTjdM1WFG/aAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1587661386f771b06c0dd62b407677851b77db57b477fd784d88712f4c287272","last_reissued_at":"2026-05-18T01:51:50.694542Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:50.694542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.0767","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":"2026-05-18T01:51:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yprmISshg5AWlb8DfcQ3oZtSreZZvEYF9lMSHuL5EoxY6LvQ6T0bYWF3SGXwVu6BHQCdyagCGdfFtc1w3DBFBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T17:39:48.965526Z"},"content_sha256":"1ec71ec02a156fe8df41a48c67b1e199877b6ea89c71242baab0ee424e0c0f08","schema_version":"1.0","event_id":"sha256:1ec71ec02a156fe8df41a48c67b1e199877b6ea89c71242baab0ee424e0c0f08"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:CWDWME4G65Y3A3AN2YVUA5TXQU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"3.3 {\\mu}m PAH observations of the central kiloparsecs of Centaurus A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) Max-Planck-Institut fuer extraterrestrische Physik), E. Sturm (2) ((1) European Southern Observatory, L.E. Tacconi-Garman (1)","submitted_at":"2013-02-04T17:36:58Z","abstract_excerpt":"Aims. The aim of this work is to further investigate the nature of PAH excitation and emission especially in the context of tracing star formation in a variety of extragalactic environments. Here we turn our attention to the energetic environment of the closest AGN in our sample, Centaurus A. Methods. Using ISAAC on the ESO VLT UT1 (Antu) we have made high spatial resolution 3.3 {\\mu}m imaging observations of the central kiloparsec of CenA. These observations have been compared with star formation tracers in the near- and mid-infrared, as well as with mid-infrared tracers of nuclear activity. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0767","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":"2026-05-18T01:51:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VtlFhi+yOekOnUl3ecFEey2LgKa6nqSXISN5fKLXlp1ynbVhpJWz50uo6E+gSDI5un4zAJFION33H+MsMJg4Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T17:39:48.965855Z"},"content_sha256":"68d1911a7e39251fbf8566a5e41ac0fa214b2f99c73ff3e7c073be899d1d2ff7","schema_version":"1.0","event_id":"sha256:68d1911a7e39251fbf8566a5e41ac0fa214b2f99c73ff3e7c073be899d1d2ff7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CWDWME4G65Y3A3AN2YVUA5TXQU/bundle.json","state_url":"https://pith.science/pith/CWDWME4G65Y3A3AN2YVUA5TXQU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CWDWME4G65Y3A3AN2YVUA5TXQU/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":"2026-06-27T17:39:48Z","links":{"resolver":"https://pith.science/pith/CWDWME4G65Y3A3AN2YVUA5TXQU","bundle":"https://pith.science/pith/CWDWME4G65Y3A3AN2YVUA5TXQU/bundle.json","state":"https://pith.science/pith/CWDWME4G65Y3A3AN2YVUA5TXQU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CWDWME4G65Y3A3AN2YVUA5TXQU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:CWDWME4G65Y3A3AN2YVUA5TXQU","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":"1a20a0fe9bd55b768f93f3bb500ade3488bb13f3398e1b5f9987ffe5edc431b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-02-04T17:36:58Z","title_canon_sha256":"f4834c580d4b2786d7707a1d8e119d5d71c60c9a70b38dab17586928dedaf748"},"schema_version":"1.0","source":{"id":"1302.0767","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0767","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0767v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0767","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"CWDWME4G65Y3","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"CWDWME4G65Y3A3AN","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"CWDWME4G","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:68d1911a7e39251fbf8566a5e41ac0fa214b2f99c73ff3e7c073be899d1d2ff7","target":"graph","created_at":"2026-05-18T01:51:50Z","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":"Aims. The aim of this work is to further investigate the nature of PAH excitation and emission especially in the context of tracing star formation in a variety of extragalactic environments. Here we turn our attention to the energetic environment of the closest AGN in our sample, Centaurus A. Methods. Using ISAAC on the ESO VLT UT1 (Antu) we have made high spatial resolution 3.3 {\\mu}m imaging observations of the central kiloparsec of CenA. These observations have been compared with star formation tracers in the near- and mid-infrared, as well as with mid-infrared tracers of nuclear activity. ","authors_text":"(2) Max-Planck-Institut fuer extraterrestrische Physik), E. Sturm (2) ((1) European Southern Observatory, L.E. Tacconi-Garman (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-02-04T17:36:58Z","title":"3.3 {\\mu}m PAH observations of the central kiloparsecs of Centaurus A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0767","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":"sha256:1ec71ec02a156fe8df41a48c67b1e199877b6ea89c71242baab0ee424e0c0f08","target":"record","created_at":"2026-05-18T01:51:50Z","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":"1a20a0fe9bd55b768f93f3bb500ade3488bb13f3398e1b5f9987ffe5edc431b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-02-04T17:36:58Z","title_canon_sha256":"f4834c580d4b2786d7707a1d8e119d5d71c60c9a70b38dab17586928dedaf748"},"schema_version":"1.0","source":{"id":"1302.0767","kind":"arxiv","version":1}},"canonical_sha256":"1587661386f771b06c0dd62b407677851b77db57b477fd784d88712f4c287272","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1587661386f771b06c0dd62b407677851b77db57b477fd784d88712f4c287272","first_computed_at":"2026-05-18T01:51:50.694542Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:50.694542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZkZpLPnQy90LgqPY6ud/yoqOuJpa76wuYXBPISMcAywyZJ3Gk4mVqOUClQPiQ5nopVMTxARcQzTjdM1WFG/aAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:50.694992Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.0767","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ec71ec02a156fe8df41a48c67b1e199877b6ea89c71242baab0ee424e0c0f08","sha256:68d1911a7e39251fbf8566a5e41ac0fa214b2f99c73ff3e7c073be899d1d2ff7"],"state_sha256":"9bfac4e024512cc3dc1163a9d3533a58f2da07398fba6332d22d515a93934412"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6htS1z3sAYboJfNyxXzS+FGteR7W6Me9WJsHvOuoSrt1YElVPuBXKPXJUVxBWqKkUN9jwK4NPNBtSChcM4wtAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T17:39:48.968544Z","bundle_sha256":"3c41b886097e543e1c529ee0fbfc5715d2d5784fa2dd964a3e51b21f79112160"}}