{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:44FO3MZFCXOWLE5HNU27H6NT3A","short_pith_number":"pith:44FO3MZF","canonical_record":{"source":{"id":"1508.00572","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-03T20:10:37Z","cross_cats_sorted":[],"title_canon_sha256":"9eaaf2d7439fd9444055be6711633a0b2702329efde6cc7e54e0f74a93e2350e","abstract_canon_sha256":"fd0fb425e07f9327fd20337eec54109c8c7d45814c72c4496d9fa3b3060a98b1"},"schema_version":"1.0"},"canonical_sha256":"e70aedb32515dd6593a76d35f3f9b3d811e4d4096f0e37fe02bcbadb90c824a5","source":{"kind":"arxiv","id":"1508.00572","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00572","created_at":"2026-05-18T01:35:53Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00572v1","created_at":"2026-05-18T01:35:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00572","created_at":"2026-05-18T01:35:53Z"},{"alias_kind":"pith_short_12","alias_value":"44FO3MZFCXOW","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44FO3MZFCXOWLE5H","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44FO3MZF","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:44FO3MZFCXOWLE5HNU27H6NT3A","target":"record","payload":{"canonical_record":{"source":{"id":"1508.00572","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-03T20:10:37Z","cross_cats_sorted":[],"title_canon_sha256":"9eaaf2d7439fd9444055be6711633a0b2702329efde6cc7e54e0f74a93e2350e","abstract_canon_sha256":"fd0fb425e07f9327fd20337eec54109c8c7d45814c72c4496d9fa3b3060a98b1"},"schema_version":"1.0"},"canonical_sha256":"e70aedb32515dd6593a76d35f3f9b3d811e4d4096f0e37fe02bcbadb90c824a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:53.937153Z","signature_b64":"Xs1kmSWwsJJgQV9HHkBT5tMHWIb4/d6rZzJZ9iD7u+CD2V1uWh75665FfYveVrV6j2HlrWgk5Y5Yq0RpAW5XAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e70aedb32515dd6593a76d35f3f9b3d811e4d4096f0e37fe02bcbadb90c824a5","last_reissued_at":"2026-05-18T01:35:53.936511Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:53.936511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.00572","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":"2026-05-18T01:35:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w12kMQti6CarpfcjAGaHAvkqrFhEKFy5/bbji18jWbCjxNaLIxpphuE5XEoQ3SfiaElE38p64j7s3jTewW1SAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:01:17.479889Z"},"content_sha256":"ca8c0b3c55317777f31ed6f6eed802e3e54e8962c34831786e1b2c446984dad0","schema_version":"1.0","event_id":"sha256:ca8c0b3c55317777f31ed6f6eed802e3e54e8962c34831786e1b2c446984dad0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:44FO3MZFCXOWLE5HNU27H6NT3A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The importance of Wolf-Rayet ionization and feedback on super star cluster evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Kelsey E. Johnson, Kimberly R. Sokal, Philip Massey, Remy Indebetouw","submitted_at":"2015-08-03T20:10:37Z","abstract_excerpt":"The feedback from massive stars is important to super star cluster (SSC) evolution and the timescales on which it occurs. SSCs form embedded in thick material, and eventually, the cluster is cleared out and revealed at optical wavelengths -- however, this transition is not well understood. We are investigating this critical SSC evolutionary transition with a multi-wavelength observational campaign. Although previously thought to appear after the cluster has fully removed embedding natal material, we have found that SSCs may host large populations of Wolf-Rayet stars. These evolved stars provid"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00572","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":"2026-05-18T01:35:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f0Y+AN6D2o3ogDOvO9+Ve6r9VInxgt7Om2zYBxhlX/YPtJ/jkbXs3XP3icDW7H+fW24kqLJC1Vvn+wO/2AvRDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:01:17.480263Z"},"content_sha256":"2864e0b6d66f08f03aa627955ea28c63ebbdda2065848322cdfe445d815d8149","schema_version":"1.0","event_id":"sha256:2864e0b6d66f08f03aa627955ea28c63ebbdda2065848322cdfe445d815d8149"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/44FO3MZFCXOWLE5HNU27H6NT3A/bundle.json","state_url":"https://pith.science/pith/44FO3MZFCXOWLE5HNU27H6NT3A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/44FO3MZFCXOWLE5HNU27H6NT3A/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":"2026-05-25T18:01:17Z","links":{"resolver":"https://pith.science/pith/44FO3MZFCXOWLE5HNU27H6NT3A","bundle":"https://pith.science/pith/44FO3MZFCXOWLE5HNU27H6NT3A/bundle.json","state":"https://pith.science/pith/44FO3MZFCXOWLE5HNU27H6NT3A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/44FO3MZFCXOWLE5HNU27H6NT3A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:44FO3MZFCXOWLE5HNU27H6NT3A","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":"fd0fb425e07f9327fd20337eec54109c8c7d45814c72c4496d9fa3b3060a98b1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-03T20:10:37Z","title_canon_sha256":"9eaaf2d7439fd9444055be6711633a0b2702329efde6cc7e54e0f74a93e2350e"},"schema_version":"1.0","source":{"id":"1508.00572","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00572","created_at":"2026-05-18T01:35:53Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00572v1","created_at":"2026-05-18T01:35:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00572","created_at":"2026-05-18T01:35:53Z"},{"alias_kind":"pith_short_12","alias_value":"44FO3MZFCXOW","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44FO3MZFCXOWLE5H","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44FO3MZF","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:2864e0b6d66f08f03aa627955ea28c63ebbdda2065848322cdfe445d815d8149","target":"graph","created_at":"2026-05-18T01:35:53Z","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 feedback from massive stars is important to super star cluster (SSC) evolution and the timescales on which it occurs. SSCs form embedded in thick material, and eventually, the cluster is cleared out and revealed at optical wavelengths -- however, this transition is not well understood. We are investigating this critical SSC evolutionary transition with a multi-wavelength observational campaign. Although previously thought to appear after the cluster has fully removed embedding natal material, we have found that SSCs may host large populations of Wolf-Rayet stars. These evolved stars provid","authors_text":"Kelsey E. Johnson, Kimberly R. Sokal, Philip Massey, Remy Indebetouw","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-03T20:10:37Z","title":"The importance of Wolf-Rayet ionization and feedback on super star cluster evolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00572","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:ca8c0b3c55317777f31ed6f6eed802e3e54e8962c34831786e1b2c446984dad0","target":"record","created_at":"2026-05-18T01:35:53Z","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":"fd0fb425e07f9327fd20337eec54109c8c7d45814c72c4496d9fa3b3060a98b1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-03T20:10:37Z","title_canon_sha256":"9eaaf2d7439fd9444055be6711633a0b2702329efde6cc7e54e0f74a93e2350e"},"schema_version":"1.0","source":{"id":"1508.00572","kind":"arxiv","version":1}},"canonical_sha256":"e70aedb32515dd6593a76d35f3f9b3d811e4d4096f0e37fe02bcbadb90c824a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e70aedb32515dd6593a76d35f3f9b3d811e4d4096f0e37fe02bcbadb90c824a5","first_computed_at":"2026-05-18T01:35:53.936511Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:53.936511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xs1kmSWwsJJgQV9HHkBT5tMHWIb4/d6rZzJZ9iD7u+CD2V1uWh75665FfYveVrV6j2HlrWgk5Y5Yq0RpAW5XAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:53.937153Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.00572","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca8c0b3c55317777f31ed6f6eed802e3e54e8962c34831786e1b2c446984dad0","sha256:2864e0b6d66f08f03aa627955ea28c63ebbdda2065848322cdfe445d815d8149"],"state_sha256":"3d8fc9522bd247d0f398e2a7f473211be9ae96f13d1bb859b444ead9f87683e3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lzfvoqJYG8No/gHiJpEH5JtxmFrKMalooE93N4uXYRTEiKCTDWh+0MsX32DnDbEh1dcab8km0wnBVt/k7R40BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:01:17.485172Z","bundle_sha256":"a594c59f3fa369bb3d908d91cde5dbe9e2b5131346bc89e36759184fef5edcdb"}}