{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:EGUFYW3Z5MT2TM5CZBMY25FFZS","short_pith_number":"pith:EGUFYW3Z","canonical_record":{"source":{"id":"1110.1633","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-10-07T20:00:05Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"cf43f9c649a81cc6e7e9c3e7966c7087e8aa9f2eb2f001a1c835f4ff7cbb7d9a","abstract_canon_sha256":"434587bb352cb680f99aaa2784f989508cd0e5af1a07c94f5d878c50cd457079"},"schema_version":"1.0"},"canonical_sha256":"21a85c5b79eb27a9b3a2c8598d74a5cc8588c1cce83b25b61375a0ce914f827e","source":{"kind":"arxiv","id":"1110.1633","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.1633","created_at":"2026-05-18T02:00:16Z"},{"alias_kind":"arxiv_version","alias_value":"1110.1633v1","created_at":"2026-05-18T02:00:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.1633","created_at":"2026-05-18T02:00:16Z"},{"alias_kind":"pith_short_12","alias_value":"EGUFYW3Z5MT2","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EGUFYW3Z5MT2TM5C","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EGUFYW3Z","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:EGUFYW3Z5MT2TM5CZBMY25FFZS","target":"record","payload":{"canonical_record":{"source":{"id":"1110.1633","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-10-07T20:00:05Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"cf43f9c649a81cc6e7e9c3e7966c7087e8aa9f2eb2f001a1c835f4ff7cbb7d9a","abstract_canon_sha256":"434587bb352cb680f99aaa2784f989508cd0e5af1a07c94f5d878c50cd457079"},"schema_version":"1.0"},"canonical_sha256":"21a85c5b79eb27a9b3a2c8598d74a5cc8588c1cce83b25b61375a0ce914f827e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:16.307216Z","signature_b64":"cuChdphgcQFoamvWTPk7M2I7PSDXVc/YCLd51qKxFrLCdnKfaGQ6ivAhjSQikziIWYZgk8kf4iE6P4QZunj/DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21a85c5b79eb27a9b3a2c8598d74a5cc8588c1cce83b25b61375a0ce914f827e","last_reissued_at":"2026-05-18T02:00:16.306757Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:16.306757Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.1633","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":"2026-05-18T02:00:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/n67F7uQsJOB1SQLdRtNrXOAKmydIJEqCfYPN3V+oIS+YItkam/H+WyijQSXzb0oiMl8IAXvtxxxeBnN42JuCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T00:09:14.537879Z"},"content_sha256":"13f931942cf00b4779cff0773f21c0bd6c4daf4cff607df5ed7f441dede4c07a","schema_version":"1.0","event_id":"sha256:13f931942cf00b4779cff0773f21c0bd6c4daf4cff607df5ed7f441dede4c07a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:EGUFYW3Z5MT2TM5CZBMY25FFZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The star formation history of the Milky Way's Nuclear Star Cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"A. Sternberg, F. Eisenhauer, H. Maness, K. Dodds-Eden, M. Zilka, O. Pfuhl, R. Genzel, S. Gillessen, T. K. Fritz, T. Ott","submitted_at":"2011-10-07T20:00:05Z","abstract_excerpt":"We present spatially resolved imaging and integral field spectroscopy data for 450 cool giant stars within 1\\,pc from Sgr\\,A*. We use the prominent CO bandheads to derive effective temperatures of individual giants. Additionally we present the deepest spectroscopic observation of the Galactic Center so far, probing the number of B9/A0 main sequence stars ($2.2-2.8\\,M_\\odot$) in two deep fields. From spectro-photometry we construct a Hertzsprung-Russell diagram of the red giant population and fit the observed diagram with model populations to derive the star formation history of the nuclear clu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.1633","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":"2026-05-18T02:00:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2JIzrecRS2Y1/Jqw2NZvkf+7MwCpy7MXOzxuxzuZLPTOu8rwOdQ2e6PHjS7PFvRBx7nIUvpVACoRfbhE3KCLCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T00:09:14.538506Z"},"content_sha256":"c20afc80cab0b7059cc3616cd54ef527064aa28b8f901fac9f5a8490d15ffab8","schema_version":"1.0","event_id":"sha256:c20afc80cab0b7059cc3616cd54ef527064aa28b8f901fac9f5a8490d15ffab8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EGUFYW3Z5MT2TM5CZBMY25FFZS/bundle.json","state_url":"https://pith.science/pith/EGUFYW3Z5MT2TM5CZBMY25FFZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EGUFYW3Z5MT2TM5CZBMY25FFZS/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":"2026-06-07T00:09:14Z","links":{"resolver":"https://pith.science/pith/EGUFYW3Z5MT2TM5CZBMY25FFZS","bundle":"https://pith.science/pith/EGUFYW3Z5MT2TM5CZBMY25FFZS/bundle.json","state":"https://pith.science/pith/EGUFYW3Z5MT2TM5CZBMY25FFZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EGUFYW3Z5MT2TM5CZBMY25FFZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EGUFYW3Z5MT2TM5CZBMY25FFZS","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":"434587bb352cb680f99aaa2784f989508cd0e5af1a07c94f5d878c50cd457079","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-10-07T20:00:05Z","title_canon_sha256":"cf43f9c649a81cc6e7e9c3e7966c7087e8aa9f2eb2f001a1c835f4ff7cbb7d9a"},"schema_version":"1.0","source":{"id":"1110.1633","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.1633","created_at":"2026-05-18T02:00:16Z"},{"alias_kind":"arxiv_version","alias_value":"1110.1633v1","created_at":"2026-05-18T02:00:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.1633","created_at":"2026-05-18T02:00:16Z"},{"alias_kind":"pith_short_12","alias_value":"EGUFYW3Z5MT2","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EGUFYW3Z5MT2TM5C","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EGUFYW3Z","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:c20afc80cab0b7059cc3616cd54ef527064aa28b8f901fac9f5a8490d15ffab8","target":"graph","created_at":"2026-05-18T02:00:16Z","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 spatially resolved imaging and integral field spectroscopy data for 450 cool giant stars within 1\\,pc from Sgr\\,A*. We use the prominent CO bandheads to derive effective temperatures of individual giants. Additionally we present the deepest spectroscopic observation of the Galactic Center so far, probing the number of B9/A0 main sequence stars ($2.2-2.8\\,M_\\odot$) in two deep fields. From spectro-photometry we construct a Hertzsprung-Russell diagram of the red giant population and fit the observed diagram with model populations to derive the star formation history of the nuclear clu","authors_text":"A. Sternberg, F. Eisenhauer, H. Maness, K. Dodds-Eden, M. Zilka, O. Pfuhl, R. Genzel, S. Gillessen, T. K. Fritz, T. Ott","cross_cats":["astro-ph.CO","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-10-07T20:00:05Z","title":"The star formation history of the Milky Way's Nuclear Star Cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.1633","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":"sha256:13f931942cf00b4779cff0773f21c0bd6c4daf4cff607df5ed7f441dede4c07a","target":"record","created_at":"2026-05-18T02:00:16Z","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":"434587bb352cb680f99aaa2784f989508cd0e5af1a07c94f5d878c50cd457079","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-10-07T20:00:05Z","title_canon_sha256":"cf43f9c649a81cc6e7e9c3e7966c7087e8aa9f2eb2f001a1c835f4ff7cbb7d9a"},"schema_version":"1.0","source":{"id":"1110.1633","kind":"arxiv","version":1}},"canonical_sha256":"21a85c5b79eb27a9b3a2c8598d74a5cc8588c1cce83b25b61375a0ce914f827e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21a85c5b79eb27a9b3a2c8598d74a5cc8588c1cce83b25b61375a0ce914f827e","first_computed_at":"2026-05-18T02:00:16.306757Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:16.306757Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cuChdphgcQFoamvWTPk7M2I7PSDXVc/YCLd51qKxFrLCdnKfaGQ6ivAhjSQikziIWYZgk8kf4iE6P4QZunj/DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:16.307216Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.1633","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13f931942cf00b4779cff0773f21c0bd6c4daf4cff607df5ed7f441dede4c07a","sha256:c20afc80cab0b7059cc3616cd54ef527064aa28b8f901fac9f5a8490d15ffab8"],"state_sha256":"85a54ac145a63ca8f5686152e3fc7fbf5238b66f9d9ba945bd2e08078a53cf22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GGqvypt8tLRWV2id05ind6z9WUvY+pGiEJYItPAoxb6THnGsWTtHL1VwN9U/7sQWpZFnt9UO4Lhj22igPpNbBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T00:09:14.541965Z","bundle_sha256":"88bb45e52d7dde45bd34ee8c83e94b33d00d3aa3a8ccc163fb2266de984aceed"}}