{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:JJ7KQGF7CTTY7YMC5CMCAGTKM6","short_pith_number":"pith:JJ7KQGF7","canonical_record":{"source":{"id":"1302.0706","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T14:36:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"89f49caac6d9c742730857339981df1658114acd873d933c56f60f1f6a66c08c","abstract_canon_sha256":"29d838aad65fe4d26015a00a368a96e782d2c3fae1e8ab72b1c70fb50565ded0"},"schema_version":"1.0"},"canonical_sha256":"4a7ea818bf14e78fe182e898201a6a678fd51034461bd6e6301045cfaa480c4a","source":{"kind":"arxiv","id":"1302.0706","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0706","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0706v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0706","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"JJ7KQGF7CTTY","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JJ7KQGF7CTTY7YMC","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JJ7KQGF7","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:JJ7KQGF7CTTY7YMC5CMCAGTKM6","target":"record","payload":{"canonical_record":{"source":{"id":"1302.0706","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T14:36:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"89f49caac6d9c742730857339981df1658114acd873d933c56f60f1f6a66c08c","abstract_canon_sha256":"29d838aad65fe4d26015a00a368a96e782d2c3fae1e8ab72b1c70fb50565ded0"},"schema_version":"1.0"},"canonical_sha256":"4a7ea818bf14e78fe182e898201a6a678fd51034461bd6e6301045cfaa480c4a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:50.765262Z","signature_b64":"brT4ltkhUQYSEE3VHzX4aPjhpO+6kQuf4/m/xQCEVMoaX87TuZB+Mxln0mclUrY4SmsRagdU3iOcTR/ztHDQDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a7ea818bf14e78fe182e898201a6a678fd51034461bd6e6301045cfaa480c4a","last_reissued_at":"2026-05-18T01:51:50.764798Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:50.764798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.0706","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":"oD8ztqGueKx/qQ2CuIn3PWShXFoUbOkQCqaGo2us/cfriHS9cEJtWSPOUUoZUJSZMdan08MkM5bkypOp8tm/CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:48:46.713406Z"},"content_sha256":"90033b6b1f0f6c0345244810330b393b4100aa7513d283dcfe6e04cfbb78fd4b","schema_version":"1.0","event_id":"sha256:90033b6b1f0f6c0345244810330b393b4100aa7513d283dcfe6e04cfbb78fd4b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:JJ7KQGF7CTTY7YMC5CMCAGTKM6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PAH emission in the proplyd HST10: what is the mechanism behind photoevaporation?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Alexander G. G. M. Tielens, Andres Carmona, Eric Pantin, Inga Kamp, Nuria Huelamo, Olivier Berne, Silvia Vicente","submitted_at":"2013-02-04T14:36:54Z","abstract_excerpt":"Proplyds are photodissociation region (PDR)-like cometary cocoons around young stars which are thought to originate through photo-evaporation of the central protoplanetary disk by external UV radiation from the nearby OB stars. This letter presents spatially resolved mid-infrared imaging and spectroscopy of the proplyd HST10 obtained with the VLT/VISIR instrument. These observations allow us to detect Polycyclic Aromatic Hydrocarbons (PAH) emission in the proplyd photodissociation region and to study the general properties of PAHs in proplyds for the first time. We find that PAHs in HST10 are "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0706","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":"YjIUIABnSrCgN69ZztbSsnpEAtVV4fauVahtOMNFipLc0JVm7rWfwY1Qmv/OHhIYyliHGXnu+77YWGpsAu6jBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:48:46.714121Z"},"content_sha256":"3557d1913943bac48f3525c1693b17e32dbe121314fdb8b5ecccbb878ebffe78","schema_version":"1.0","event_id":"sha256:3557d1913943bac48f3525c1693b17e32dbe121314fdb8b5ecccbb878ebffe78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JJ7KQGF7CTTY7YMC5CMCAGTKM6/bundle.json","state_url":"https://pith.science/pith/JJ7KQGF7CTTY7YMC5CMCAGTKM6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JJ7KQGF7CTTY7YMC5CMCAGTKM6/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":"2026-05-25T18:48:46Z","links":{"resolver":"https://pith.science/pith/JJ7KQGF7CTTY7YMC5CMCAGTKM6","bundle":"https://pith.science/pith/JJ7KQGF7CTTY7YMC5CMCAGTKM6/bundle.json","state":"https://pith.science/pith/JJ7KQGF7CTTY7YMC5CMCAGTKM6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JJ7KQGF7CTTY7YMC5CMCAGTKM6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JJ7KQGF7CTTY7YMC5CMCAGTKM6","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":"29d838aad65fe4d26015a00a368a96e782d2c3fae1e8ab72b1c70fb50565ded0","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T14:36:54Z","title_canon_sha256":"89f49caac6d9c742730857339981df1658114acd873d933c56f60f1f6a66c08c"},"schema_version":"1.0","source":{"id":"1302.0706","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0706","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0706v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0706","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"JJ7KQGF7CTTY","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JJ7KQGF7CTTY7YMC","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JJ7KQGF7","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:3557d1913943bac48f3525c1693b17e32dbe121314fdb8b5ecccbb878ebffe78","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":"Proplyds are photodissociation region (PDR)-like cometary cocoons around young stars which are thought to originate through photo-evaporation of the central protoplanetary disk by external UV radiation from the nearby OB stars. This letter presents spatially resolved mid-infrared imaging and spectroscopy of the proplyd HST10 obtained with the VLT/VISIR instrument. These observations allow us to detect Polycyclic Aromatic Hydrocarbons (PAH) emission in the proplyd photodissociation region and to study the general properties of PAHs in proplyds for the first time. We find that PAHs in HST10 are ","authors_text":"Alexander G. G. M. Tielens, Andres Carmona, Eric Pantin, Inga Kamp, Nuria Huelamo, Olivier Berne, Silvia Vicente","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T14:36:54Z","title":"PAH emission in the proplyd HST10: what is the mechanism behind photoevaporation?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0706","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":"sha256:90033b6b1f0f6c0345244810330b393b4100aa7513d283dcfe6e04cfbb78fd4b","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":"29d838aad65fe4d26015a00a368a96e782d2c3fae1e8ab72b1c70fb50565ded0","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T14:36:54Z","title_canon_sha256":"89f49caac6d9c742730857339981df1658114acd873d933c56f60f1f6a66c08c"},"schema_version":"1.0","source":{"id":"1302.0706","kind":"arxiv","version":1}},"canonical_sha256":"4a7ea818bf14e78fe182e898201a6a678fd51034461bd6e6301045cfaa480c4a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a7ea818bf14e78fe182e898201a6a678fd51034461bd6e6301045cfaa480c4a","first_computed_at":"2026-05-18T01:51:50.764798Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:50.764798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"brT4ltkhUQYSEE3VHzX4aPjhpO+6kQuf4/m/xQCEVMoaX87TuZB+Mxln0mclUrY4SmsRagdU3iOcTR/ztHDQDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:50.765262Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.0706","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90033b6b1f0f6c0345244810330b393b4100aa7513d283dcfe6e04cfbb78fd4b","sha256:3557d1913943bac48f3525c1693b17e32dbe121314fdb8b5ecccbb878ebffe78"],"state_sha256":"574263da818aaa895e410cec26d7af5b7fab94e975b1b8eb4de99825ea6f9d2a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OjHsb4UNLOs+TVCnA/ZIMW0Gy9p/cdi76FcILkbHZto4e+KHwEdvjz0RN48y4Tcew77Ug3+Qlk43ldO19qqjAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:48:46.717863Z","bundle_sha256":"19e50e950604d2701869b1dcec4445c80394597ed2ea592cf02e5bd6bec583c1"}}