{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:WKUEW36TD2DGYQV44XT4U2XE2T","short_pith_number":"pith:WKUEW36T","canonical_record":{"source":{"id":"1203.2625","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-12T20:00:11Z","cross_cats_sorted":[],"title_canon_sha256":"331fe2082d7cef2e7c51bac24e6f1ba53b342d3d184f6e4bd2529b9975cb5372","abstract_canon_sha256":"05955b5bc9f71db14055492deafb64c4709541f92309cff251d69a40d844acf8"},"schema_version":"1.0"},"canonical_sha256":"b2a84b6fd31e866c42bce5e7ca6ae4d4d51c57adffd92558314bb634c8d25455","source":{"kind":"arxiv","id":"1203.2625","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.2625","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"arxiv_version","alias_value":"1203.2625v2","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.2625","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"pith_short_12","alias_value":"WKUEW36TD2DG","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"WKUEW36TD2DGYQV4","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"WKUEW36T","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:WKUEW36TD2DGYQV44XT4U2XE2T","target":"record","payload":{"canonical_record":{"source":{"id":"1203.2625","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-12T20:00:11Z","cross_cats_sorted":[],"title_canon_sha256":"331fe2082d7cef2e7c51bac24e6f1ba53b342d3d184f6e4bd2529b9975cb5372","abstract_canon_sha256":"05955b5bc9f71db14055492deafb64c4709541f92309cff251d69a40d844acf8"},"schema_version":"1.0"},"canonical_sha256":"b2a84b6fd31e866c42bce5e7ca6ae4d4d51c57adffd92558314bb634c8d25455","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:37:08.781380Z","signature_b64":"8BL+fnOfXVa236EErdBPIZd3kcQ0n9v0TlHP8QSOq4rU5YIg56XgK5mFJ9Z5nGRIseOcoX3bw5eSk8GF+lIrCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2a84b6fd31e866c42bce5e7ca6ae4d4d51c57adffd92558314bb634c8d25455","last_reissued_at":"2026-05-18T03:37:08.780648Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:37:08.780648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.2625","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:37:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n1hHwaowSKJKU6FdRC47edpi2DRbRRd/VeTsli1Xzn/5XGleTY3II9YhVeoCytPVbBiFUJUcrm4foXPps20BBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:39:30.020533Z"},"content_sha256":"92072dab757ddbda5dd46b26ad8b900d16d4004fb347b49c633078b28044c856","schema_version":"1.0","event_id":"sha256:92072dab757ddbda5dd46b26ad8b900d16d4004fb347b49c633078b28044c856"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:WKUEW36TD2DGYQV44XT4U2XE2T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The S-Star Cluster at the Center of the Milky Way: On the nature of diffuse NIR emission in the inner tenth of a parsec","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andreas Eckart, Banafsheh Shahzamanian, Behrang Jalali, Christian Straubmeier, David Merritt, Gunther Witzel, Macarena Garc\\'ia-Mar\\'in, Mohammad Zamaninasab, Monica Valencia-S., Nadeen Sabha, Rainer Buchholz, Senol Yazici","submitted_at":"2012-03-12T20:00:11Z","abstract_excerpt":"Sagittarius A*, the super-massive black hole at the center of the Milky Way, is surrounded by a small cluster of high velocity stars, known as the S-stars. We aim to constrain the amount and nature of stellar and dark mass associated with the cluster in the immediate vicinity of Sagittarius A*. We use near-infrared imaging to determine the $K_\\mathrm{s}$-band luminosity function of the S-star cluster members, and the distribution of the diffuse background emission and the stellar number density counts around the central black hole. This allows us to determine the stellar light and mass contrib"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.2625","kind":"arxiv","version":2},"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":"2026-05-18T03:37:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wYvPZkFkKvUzfEEEZ7ySkgwujAWEVxW/n2mBgxAA3auONpXhojksRCxLcxXnGmDgWVEXULw0vK4q8Kra1ltaBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:39:30.021219Z"},"content_sha256":"ba5745ecd1a7a2b4fe5bd5a9e04d5fd049dcf66599dceaa0cf5b5f453f961d78","schema_version":"1.0","event_id":"sha256:ba5745ecd1a7a2b4fe5bd5a9e04d5fd049dcf66599dceaa0cf5b5f453f961d78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WKUEW36TD2DGYQV44XT4U2XE2T/bundle.json","state_url":"https://pith.science/pith/WKUEW36TD2DGYQV44XT4U2XE2T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WKUEW36TD2DGYQV44XT4U2XE2T/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":"2026-05-26T00:39:30Z","links":{"resolver":"https://pith.science/pith/WKUEW36TD2DGYQV44XT4U2XE2T","bundle":"https://pith.science/pith/WKUEW36TD2DGYQV44XT4U2XE2T/bundle.json","state":"https://pith.science/pith/WKUEW36TD2DGYQV44XT4U2XE2T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WKUEW36TD2DGYQV44XT4U2XE2T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:WKUEW36TD2DGYQV44XT4U2XE2T","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":"05955b5bc9f71db14055492deafb64c4709541f92309cff251d69a40d844acf8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-12T20:00:11Z","title_canon_sha256":"331fe2082d7cef2e7c51bac24e6f1ba53b342d3d184f6e4bd2529b9975cb5372"},"schema_version":"1.0","source":{"id":"1203.2625","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.2625","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"arxiv_version","alias_value":"1203.2625v2","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.2625","created_at":"2026-05-18T03:37:08Z"},{"alias_kind":"pith_short_12","alias_value":"WKUEW36TD2DG","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"WKUEW36TD2DGYQV4","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"WKUEW36T","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:ba5745ecd1a7a2b4fe5bd5a9e04d5fd049dcf66599dceaa0cf5b5f453f961d78","target":"graph","created_at":"2026-05-18T03:37:08Z","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":"Sagittarius A*, the super-massive black hole at the center of the Milky Way, is surrounded by a small cluster of high velocity stars, known as the S-stars. We aim to constrain the amount and nature of stellar and dark mass associated with the cluster in the immediate vicinity of Sagittarius A*. We use near-infrared imaging to determine the $K_\\mathrm{s}$-band luminosity function of the S-star cluster members, and the distribution of the diffuse background emission and the stellar number density counts around the central black hole. This allows us to determine the stellar light and mass contrib","authors_text":"Andreas Eckart, Banafsheh Shahzamanian, Behrang Jalali, Christian Straubmeier, David Merritt, Gunther Witzel, Macarena Garc\\'ia-Mar\\'in, Mohammad Zamaninasab, Monica Valencia-S., Nadeen Sabha, Rainer Buchholz, Senol Yazici","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-12T20:00:11Z","title":"The S-Star Cluster at the Center of the Milky Way: On the nature of diffuse NIR emission in the inner tenth of a parsec"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.2625","kind":"arxiv","version":2},"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":"sha256:92072dab757ddbda5dd46b26ad8b900d16d4004fb347b49c633078b28044c856","target":"record","created_at":"2026-05-18T03:37:08Z","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":"05955b5bc9f71db14055492deafb64c4709541f92309cff251d69a40d844acf8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-12T20:00:11Z","title_canon_sha256":"331fe2082d7cef2e7c51bac24e6f1ba53b342d3d184f6e4bd2529b9975cb5372"},"schema_version":"1.0","source":{"id":"1203.2625","kind":"arxiv","version":2}},"canonical_sha256":"b2a84b6fd31e866c42bce5e7ca6ae4d4d51c57adffd92558314bb634c8d25455","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2a84b6fd31e866c42bce5e7ca6ae4d4d51c57adffd92558314bb634c8d25455","first_computed_at":"2026-05-18T03:37:08.780648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:37:08.780648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8BL+fnOfXVa236EErdBPIZd3kcQ0n9v0TlHP8QSOq4rU5YIg56XgK5mFJ9Z5nGRIseOcoX3bw5eSk8GF+lIrCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:37:08.781380Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.2625","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:92072dab757ddbda5dd46b26ad8b900d16d4004fb347b49c633078b28044c856","sha256:ba5745ecd1a7a2b4fe5bd5a9e04d5fd049dcf66599dceaa0cf5b5f453f961d78"],"state_sha256":"a489313106cbf5b56fe92edc56c4f01a5af496e85fced91d12fdf4d642df8c22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fiwZCYAAL7sBiCynuJZO4416vRmRViezLdbbmMpJwBJYlETMrrxqzVA7YpuWftCQshHEmPx8G1/mkaQrb8s2CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T00:39:30.024878Z","bundle_sha256":"923ab5b7f90f70c8afa7798949431d559c3b757c9aa6628ca5baba4e289c1ed9"}}