{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:CLOAEY7N6VHCFJFSRZ6F3ZUNY7","short_pith_number":"pith:CLOAEY7N","canonical_record":{"source":{"id":"1610.02441","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-07T22:46:35Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"2a3be80eeeb23357d5621300aa0f9a219d66a75d192d1c6cfca1c40abb04a069","abstract_canon_sha256":"49b1898ff4e9e5f0f8e403cbe9487a422e79b0a6846a0f6b10c18801d88921ba"},"schema_version":"1.0"},"canonical_sha256":"12dc0263edf54e22a4b28e7c5de68dc7d9ba116b154ff9d55c59ad0fdb0f6621","source":{"kind":"arxiv","id":"1610.02441","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.02441","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"arxiv_version","alias_value":"1610.02441v1","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.02441","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"pith_short_12","alias_value":"CLOAEY7N6VHC","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CLOAEY7N6VHCFJFS","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CLOAEY7N","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:CLOAEY7N6VHCFJFSRZ6F3ZUNY7","target":"record","payload":{"canonical_record":{"source":{"id":"1610.02441","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-07T22:46:35Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"2a3be80eeeb23357d5621300aa0f9a219d66a75d192d1c6cfca1c40abb04a069","abstract_canon_sha256":"49b1898ff4e9e5f0f8e403cbe9487a422e79b0a6846a0f6b10c18801d88921ba"},"schema_version":"1.0"},"canonical_sha256":"12dc0263edf54e22a4b28e7c5de68dc7d9ba116b154ff9d55c59ad0fdb0f6621","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:18.644954Z","signature_b64":"MkipJ1Wc5/pbRf03sAu5ZEGtGcXbZ2nUGfj8HGymtZvuvTJBfnW0XU4mC8ugXOnE9MlEWPRtHlV4BcSfoQOaAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"12dc0263edf54e22a4b28e7c5de68dc7d9ba116b154ff9d55c59ad0fdb0f6621","last_reissued_at":"2026-05-18T00:50:18.644265Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:18.644265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.02441","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":"2026-05-18T00:50:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GCXtmZbr2w3iGfc9QQLitZ6J04R3G87vNHSVkKthXjjnnTodQa2FDz+bAfHaITKsUJf7uMB1rhNb/EpwEvZZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:07:30.799753Z"},"content_sha256":"ebb1a82039a38c9362e943c53d970bc3af73c794469559872e6d9b2317784a6c","schema_version":"1.0","event_id":"sha256:ebb1a82039a38c9362e943c53d970bc3af73c794469559872e6d9b2317784a6c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:CLOAEY7N6VHCFJFSRZ6F3ZUNY7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraining the Variability and Binary Fraction of Galactic Center Young Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Abhimat K. Gautam, Andrea M. Ghez, Breann N. Sitarski, Gunther Witzel, Jessica R. Lu, Mark R. Morris, Samantha Chappell, Shoko Sakai, Tuan Do","submitted_at":"2016-10-07T22:46:35Z","abstract_excerpt":"We present constraints on the variability and binarity of young stars in the central 10 arcseconds (~0.4 pc) of the Milky Way Galactic Center (GC) using Keck Adaptive Optics data over a 12 year baseline. Given our experiment's photometric uncertainties, at least 36% of our sample's known early-type stars are variable. We identified eclipsing binary systems by searching for periodic variability. In our sample of spectroscopically confirmed and likely early-type stars, we detected the two previously discovered GC eclipsing binary systems. We derived the likely binary fraction of main sequence, e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.02441","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":"2026-05-18T00:50:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QUfE01jBOzvSkJPZtswsLnNChe/yQH4Je/9lB8WKFozWk6fQntE+oNMJftoyskWavpJUBQLZnnEFYBssWMhTAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:07:30.800107Z"},"content_sha256":"8e2891fd53de1a7536ea97a9aeb1cea286e0cd7416404042170e240bb153e9f8","schema_version":"1.0","event_id":"sha256:8e2891fd53de1a7536ea97a9aeb1cea286e0cd7416404042170e240bb153e9f8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CLOAEY7N6VHCFJFSRZ6F3ZUNY7/bundle.json","state_url":"https://pith.science/pith/CLOAEY7N6VHCFJFSRZ6F3ZUNY7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CLOAEY7N6VHCFJFSRZ6F3ZUNY7/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":"2026-05-25T10:07:30Z","links":{"resolver":"https://pith.science/pith/CLOAEY7N6VHCFJFSRZ6F3ZUNY7","bundle":"https://pith.science/pith/CLOAEY7N6VHCFJFSRZ6F3ZUNY7/bundle.json","state":"https://pith.science/pith/CLOAEY7N6VHCFJFSRZ6F3ZUNY7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CLOAEY7N6VHCFJFSRZ6F3ZUNY7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:CLOAEY7N6VHCFJFSRZ6F3ZUNY7","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":"49b1898ff4e9e5f0f8e403cbe9487a422e79b0a6846a0f6b10c18801d88921ba","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-07T22:46:35Z","title_canon_sha256":"2a3be80eeeb23357d5621300aa0f9a219d66a75d192d1c6cfca1c40abb04a069"},"schema_version":"1.0","source":{"id":"1610.02441","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.02441","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"arxiv_version","alias_value":"1610.02441v1","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.02441","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"pith_short_12","alias_value":"CLOAEY7N6VHC","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CLOAEY7N6VHCFJFS","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CLOAEY7N","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:8e2891fd53de1a7536ea97a9aeb1cea286e0cd7416404042170e240bb153e9f8","target":"graph","created_at":"2026-05-18T00:50:18Z","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 constraints on the variability and binarity of young stars in the central 10 arcseconds (~0.4 pc) of the Milky Way Galactic Center (GC) using Keck Adaptive Optics data over a 12 year baseline. Given our experiment's photometric uncertainties, at least 36% of our sample's known early-type stars are variable. We identified eclipsing binary systems by searching for periodic variability. In our sample of spectroscopically confirmed and likely early-type stars, we detected the two previously discovered GC eclipsing binary systems. We derived the likely binary fraction of main sequence, e","authors_text":"Abhimat K. Gautam, Andrea M. Ghez, Breann N. Sitarski, Gunther Witzel, Jessica R. Lu, Mark R. Morris, Samantha Chappell, Shoko Sakai, Tuan Do","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-07T22:46:35Z","title":"Constraining the Variability and Binary Fraction of Galactic Center Young Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.02441","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:ebb1a82039a38c9362e943c53d970bc3af73c794469559872e6d9b2317784a6c","target":"record","created_at":"2026-05-18T00:50:18Z","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":"49b1898ff4e9e5f0f8e403cbe9487a422e79b0a6846a0f6b10c18801d88921ba","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-07T22:46:35Z","title_canon_sha256":"2a3be80eeeb23357d5621300aa0f9a219d66a75d192d1c6cfca1c40abb04a069"},"schema_version":"1.0","source":{"id":"1610.02441","kind":"arxiv","version":1}},"canonical_sha256":"12dc0263edf54e22a4b28e7c5de68dc7d9ba116b154ff9d55c59ad0fdb0f6621","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"12dc0263edf54e22a4b28e7c5de68dc7d9ba116b154ff9d55c59ad0fdb0f6621","first_computed_at":"2026-05-18T00:50:18.644265Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:18.644265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MkipJ1Wc5/pbRf03sAu5ZEGtGcXbZ2nUGfj8HGymtZvuvTJBfnW0XU4mC8ugXOnE9MlEWPRtHlV4BcSfoQOaAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:18.644954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.02441","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ebb1a82039a38c9362e943c53d970bc3af73c794469559872e6d9b2317784a6c","sha256:8e2891fd53de1a7536ea97a9aeb1cea286e0cd7416404042170e240bb153e9f8"],"state_sha256":"62c32fc6033ff2d6c59009513c15c0b3d1d53a2fd87e1954e300befb9a842a9c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pCNm2dR3mQ+HOKuL1YSuQcBXSbpTVIrE2szej4wLbAlqUDoMJ6DJYz91tzLeNIY/LeaDAEuYHntzrqwy4BQuAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T10:07:30.802492Z","bundle_sha256":"8c2462f8a567d2fadecf944d14150fb07506d0c35341dd30ea9c252fd043ad3a"}}