{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JWPVOVHJM47FEZJPPBQXZF5M2V","short_pith_number":"pith:JWPVOVHJ","canonical_record":{"source":{"id":"1508.04476","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-18T22:35:03Z","cross_cats_sorted":[],"title_canon_sha256":"80694de91464790f4a7352add288b4f6edee141e2bbcdbf2e9d25d247befef8a","abstract_canon_sha256":"d72bc71e612216a80365e2cfe7e2da82fa979d03458b108dbb37ebe4a2ec6a15"},"schema_version":"1.0"},"canonical_sha256":"4d9f5754e9673e52652f78617c97acd579782c09ee6ac5e14a451da064144644","source":{"kind":"arxiv","id":"1508.04476","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.04476","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"arxiv_version","alias_value":"1508.04476v1","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.04476","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"pith_short_12","alias_value":"JWPVOVHJM47F","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JWPVOVHJM47FEZJP","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JWPVOVHJ","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JWPVOVHJM47FEZJPPBQXZF5M2V","target":"record","payload":{"canonical_record":{"source":{"id":"1508.04476","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-18T22:35:03Z","cross_cats_sorted":[],"title_canon_sha256":"80694de91464790f4a7352add288b4f6edee141e2bbcdbf2e9d25d247befef8a","abstract_canon_sha256":"d72bc71e612216a80365e2cfe7e2da82fa979d03458b108dbb37ebe4a2ec6a15"},"schema_version":"1.0"},"canonical_sha256":"4d9f5754e9673e52652f78617c97acd579782c09ee6ac5e14a451da064144644","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:31:31.404541Z","signature_b64":"TPuiLnDpV6Zxiad0tgIOLV/b2vaXL8ZPxJTlI0NP2zCqltXKSUJ/VhrbvtGItds/vhQYu9pOUSBav2u37PUSCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d9f5754e9673e52652f78617c97acd579782c09ee6ac5e14a451da064144644","last_reissued_at":"2026-05-18T01:31:31.403866Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:31:31.403866Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.04476","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":"2026-05-18T01:31:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5koIcrBQFONVCjvu92Q10F20aOoefhORAtWT1iSsae8GcKxzy/ywDsjaTEuXX15Qic9YlCDx5hIVqKmwklcOAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:05:30.725569Z"},"content_sha256":"f4b3f91d682a9954a42cd94750fe9b75cb3f212804c4942ad5cb8a2e94cf34d8","schema_version":"1.0","event_id":"sha256:f4b3f91d682a9954a42cd94750fe9b75cb3f212804c4942ad5cb8a2e94cf34d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JWPVOVHJM47FEZJPPBQXZF5M2V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Brightest Young Star Clusters in NGC 5253","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Adamo (Stockholm U.), A. Aloisi (STScI), A. Herrero (IAC), A. Nota (STScI), A. Pellerin (SUNY-Geneseo), A.S. Evans (U. Virginia), A. Wofford (IAP), B.C. Whitmore (STScI), B.G. Elmegreen (IBM), C. Christian (STScI), C. Dobbs (U. Exeter), D.A. Dale (U. Wyoming), D.A. Gouliermis (U. Heidelberg), D. Calzetti (U. Massachusetts), D. Cook (U. Wyoming), D.M. Elmegreen (Vassar Coll.), D. Schaerer (U. Geneva), D. Thilker (Johns Hopkins U.), E.K. Grebel (U. Heidelberg), E. Sabbi (STScI), E. Sacchi (U. Bologna), E. Zackrisson (Uppsala U.), G.C. Clayton (Louisiana State U.), G. Oestlin (Stockholm U.), H. Kim (U. Texas), J.C. Lee (STScI), J.E. Andrews (U. Arizona), J.E. Ryon (U. WIsconsin), J.S. Gallagher III (U. Wisconsin), K.E. Johnson (U. Virginia), K. Grasha (U. Massachusetts), L.J. Smith (STScI), L. Kahre (New Mexico State U.), L. Ubeda (STScI), M. Cignoni (STScI), M. Fumagalli (Durham U.), M. Messa (Stockholm U.), M.R. Krumholz (UC - Santa Cruz), M. Tosi (INAF-OAB), P. Nair (U. Alabama), R. Chandar (U. Toledo), R.C. Kennicutt (U. Cambridge), R. Walterbos (New Mexico State U.), S.E. de Mink (U. Amsterdam), S.N. Bright (STScI), T.M. Brown (STScI)","submitted_at":"2015-08-18T22:35:03Z","abstract_excerpt":"The nearby dwarf starburst galaxy NGC5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded by thermal radio emission (the `radio nebula'). To investigate the role of these clusters in the starburst energetics, we combine new and archival Hubble Space Telescope images of NGC5253 with wavelength coverage from 1500 Ang to 1.9 micron in 13 filters. These include H-alpha, P-beta, and P-alpha, and the imaging from the Hubble Treasury Program LEGUS (Legacy Extragalactic UV Survey). The extraordinarily well-sampled spectral energy dist"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.04476","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":"2026-05-18T01:31:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nzHIiKskesqc7IZ5zv8nQF9do8cujVX7r62jk8JMfsI1BRy/e/LFKrJ0mLDt8u2+ltkzoumXmwBmC9mMXiJhAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:05:30.725939Z"},"content_sha256":"f44bfcde2e1d01ea3a576872d6852aa9645ebd9730417583fc73db3946ea8fa7","schema_version":"1.0","event_id":"sha256:f44bfcde2e1d01ea3a576872d6852aa9645ebd9730417583fc73db3946ea8fa7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JWPVOVHJM47FEZJPPBQXZF5M2V/bundle.json","state_url":"https://pith.science/pith/JWPVOVHJM47FEZJPPBQXZF5M2V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JWPVOVHJM47FEZJPPBQXZF5M2V/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":"2026-05-28T03:05:30Z","links":{"resolver":"https://pith.science/pith/JWPVOVHJM47FEZJPPBQXZF5M2V","bundle":"https://pith.science/pith/JWPVOVHJM47FEZJPPBQXZF5M2V/bundle.json","state":"https://pith.science/pith/JWPVOVHJM47FEZJPPBQXZF5M2V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JWPVOVHJM47FEZJPPBQXZF5M2V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JWPVOVHJM47FEZJPPBQXZF5M2V","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":"d72bc71e612216a80365e2cfe7e2da82fa979d03458b108dbb37ebe4a2ec6a15","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-18T22:35:03Z","title_canon_sha256":"80694de91464790f4a7352add288b4f6edee141e2bbcdbf2e9d25d247befef8a"},"schema_version":"1.0","source":{"id":"1508.04476","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.04476","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"arxiv_version","alias_value":"1508.04476v1","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.04476","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"pith_short_12","alias_value":"JWPVOVHJM47F","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JWPVOVHJM47FEZJP","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JWPVOVHJ","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:f44bfcde2e1d01ea3a576872d6852aa9645ebd9730417583fc73db3946ea8fa7","target":"graph","created_at":"2026-05-18T01:31:31Z","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 nearby dwarf starburst galaxy NGC5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded by thermal radio emission (the `radio nebula'). To investigate the role of these clusters in the starburst energetics, we combine new and archival Hubble Space Telescope images of NGC5253 with wavelength coverage from 1500 Ang to 1.9 micron in 13 filters. These include H-alpha, P-beta, and P-alpha, and the imaging from the Hubble Treasury Program LEGUS (Legacy Extragalactic UV Survey). The extraordinarily well-sampled spectral energy dist","authors_text":"A. Adamo (Stockholm U.), A. Aloisi (STScI), A. Herrero (IAC), A. Nota (STScI), A. Pellerin (SUNY-Geneseo), A.S. Evans (U. Virginia), A. Wofford (IAP), B.C. Whitmore (STScI), B.G. Elmegreen (IBM), C. Christian (STScI), C. Dobbs (U. Exeter), D.A. Dale (U. Wyoming), D.A. Gouliermis (U. Heidelberg), D. Calzetti (U. Massachusetts), D. Cook (U. Wyoming), D.M. Elmegreen (Vassar Coll.), D. Schaerer (U. Geneva), D. Thilker (Johns Hopkins U.), E.K. Grebel (U. Heidelberg), E. Sabbi (STScI), E. Sacchi (U. Bologna), E. Zackrisson (Uppsala U.), G.C. Clayton (Louisiana State U.), G. Oestlin (Stockholm U.), H. Kim (U. Texas), J.C. Lee (STScI), J.E. Andrews (U. Arizona), J.E. Ryon (U. WIsconsin), J.S. Gallagher III (U. Wisconsin), K.E. Johnson (U. Virginia), K. Grasha (U. Massachusetts), L.J. Smith (STScI), L. Kahre (New Mexico State U.), L. Ubeda (STScI), M. Cignoni (STScI), M. Fumagalli (Durham U.), M. Messa (Stockholm U.), M.R. Krumholz (UC - Santa Cruz), M. Tosi (INAF-OAB), P. Nair (U. Alabama), R. Chandar (U. Toledo), R.C. Kennicutt (U. Cambridge), R. Walterbos (New Mexico State U.), S.E. de Mink (U. Amsterdam), S.N. Bright (STScI), T.M. Brown (STScI)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-18T22:35:03Z","title":"The Brightest Young Star Clusters in NGC 5253"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.04476","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:f4b3f91d682a9954a42cd94750fe9b75cb3f212804c4942ad5cb8a2e94cf34d8","target":"record","created_at":"2026-05-18T01:31:31Z","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":"d72bc71e612216a80365e2cfe7e2da82fa979d03458b108dbb37ebe4a2ec6a15","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-18T22:35:03Z","title_canon_sha256":"80694de91464790f4a7352add288b4f6edee141e2bbcdbf2e9d25d247befef8a"},"schema_version":"1.0","source":{"id":"1508.04476","kind":"arxiv","version":1}},"canonical_sha256":"4d9f5754e9673e52652f78617c97acd579782c09ee6ac5e14a451da064144644","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d9f5754e9673e52652f78617c97acd579782c09ee6ac5e14a451da064144644","first_computed_at":"2026-05-18T01:31:31.403866Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:31:31.403866Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TPuiLnDpV6Zxiad0tgIOLV/b2vaXL8ZPxJTlI0NP2zCqltXKSUJ/VhrbvtGItds/vhQYu9pOUSBav2u37PUSCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:31:31.404541Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.04476","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4b3f91d682a9954a42cd94750fe9b75cb3f212804c4942ad5cb8a2e94cf34d8","sha256:f44bfcde2e1d01ea3a576872d6852aa9645ebd9730417583fc73db3946ea8fa7"],"state_sha256":"40e4118db835fe10fbd15d99c0113e09360a92449dccb02b89c33b29153f27f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j7sbfF//yqoW4pDPScm0kz5xlY9ofNsLnnMcupnSsBskkVagcrHoKFTKi/nla8aVFnVbqVJwvoeMIbpiOfitCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T03:05:30.727924Z","bundle_sha256":"7faaec1fdc48264b070117a3c3f2ecb56d04f703e7c2c7ed0efe3b857c830c4e"}}