{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:QPSFHL7UB6F45HVKLNSO23V5DQ","short_pith_number":"pith:QPSFHL7U","canonical_record":{"source":{"id":"1405.7105","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-05-28T02:52:47Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4a0a5103be07cdaf71353dc94c5f83d1c28c2b586972f53fef17637f22dccdcc","abstract_canon_sha256":"c94fc58460a6857fdb46407c8b23e2f928e05297b02ca720063031f39782d8e9"},"schema_version":"1.0"},"canonical_sha256":"83e453aff40f8bce9eaa5b64ed6ebd1c39dd2a683b6805638b870aa6e3daa14e","source":{"kind":"arxiv","id":"1405.7105","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.7105","created_at":"2026-05-18T01:43:05Z"},{"alias_kind":"arxiv_version","alias_value":"1405.7105v3","created_at":"2026-05-18T01:43:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7105","created_at":"2026-05-18T01:43:05Z"},{"alias_kind":"pith_short_12","alias_value":"QPSFHL7UB6F4","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QPSFHL7UB6F45HVK","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QPSFHL7U","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:QPSFHL7UB6F45HVKLNSO23V5DQ","target":"record","payload":{"canonical_record":{"source":{"id":"1405.7105","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-05-28T02:52:47Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4a0a5103be07cdaf71353dc94c5f83d1c28c2b586972f53fef17637f22dccdcc","abstract_canon_sha256":"c94fc58460a6857fdb46407c8b23e2f928e05297b02ca720063031f39782d8e9"},"schema_version":"1.0"},"canonical_sha256":"83e453aff40f8bce9eaa5b64ed6ebd1c39dd2a683b6805638b870aa6e3daa14e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:05.494586Z","signature_b64":"0Ny1dWR5hs2XO+rksGW/b4jsdxBKqvUPcQ87RBPm52ovke0rdJ5hwnjOpa7qs+pL0/bSPCfNijbGBSJU37dfAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83e453aff40f8bce9eaa5b64ed6ebd1c39dd2a683b6805638b870aa6e3daa14e","last_reissued_at":"2026-05-18T01:43:05.494212Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:05.494212Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.7105","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:43:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DjpCgLvrHw85h8cjYPTA0giscw5Ig0+O1iF3Cm3FARDbcX103No37wdry0lS6NuO+LHm/90PrGBCPFjKVBo+Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:42:26.839602Z"},"content_sha256":"ce9a1877c3f26417bd5f1e9cb9de9b8d0abe64df80ddffe9a18c73f1a643dd9f","schema_version":"1.0","event_id":"sha256:ce9a1877c3f26417bd5f1e9cb9de9b8d0abe64df80ddffe9a18c73f1a643dd9f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:QPSFHL7UB6F45HVKLNSO23V5DQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The binarity of Milky Way F,G,K stars as a function of effective temperature and metallicity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Chao Liu, Licai Deng, Ming Yang, Shuang Gao, Stephen Justham, Xiaobin Zhang","submitted_at":"2014-05-28T02:52:47Z","abstract_excerpt":"We estimate the fraction of F,G,K stars with close binary companions by analysing multi-epoch stellar spectra from SDSS and LAMOST for radial velocity (RV) variations. We employ a Bayesian method to infer the maximum likelihood of the fraction of binary stars with orbital periods of 1000 days or shorter, assuming a simple model distribution for a binary population with circular orbits. The overall inferred fraction of stars with such a close binary companion is 43.0% \\pm 2.0% for a sample of F, G, K stars from SDSS SEGUE, and 30% \\pm 8.0% in a similar sample from LAMOST. The apparent close bin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7105","kind":"arxiv","version":3},"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":"2026-05-18T01:43:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"szuSZpWOa44QOjs6RDgaRXFk3fYD13qI343VdsLh2zqU2m5G/FHDbEYDBK1j1c7jbEaw4CWuZy32pvMtiE0DAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:42:26.839962Z"},"content_sha256":"cb24f3530049d2cf8f790da309141946be7b0cc1b310b10070e3b0121964d435","schema_version":"1.0","event_id":"sha256:cb24f3530049d2cf8f790da309141946be7b0cc1b310b10070e3b0121964d435"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QPSFHL7UB6F45HVKLNSO23V5DQ/bundle.json","state_url":"https://pith.science/pith/QPSFHL7UB6F45HVKLNSO23V5DQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QPSFHL7UB6F45HVKLNSO23V5DQ/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":"2026-05-27T18:42:26Z","links":{"resolver":"https://pith.science/pith/QPSFHL7UB6F45HVKLNSO23V5DQ","bundle":"https://pith.science/pith/QPSFHL7UB6F45HVKLNSO23V5DQ/bundle.json","state":"https://pith.science/pith/QPSFHL7UB6F45HVKLNSO23V5DQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QPSFHL7UB6F45HVKLNSO23V5DQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QPSFHL7UB6F45HVKLNSO23V5DQ","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":"c94fc58460a6857fdb46407c8b23e2f928e05297b02ca720063031f39782d8e9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-05-28T02:52:47Z","title_canon_sha256":"4a0a5103be07cdaf71353dc94c5f83d1c28c2b586972f53fef17637f22dccdcc"},"schema_version":"1.0","source":{"id":"1405.7105","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.7105","created_at":"2026-05-18T01:43:05Z"},{"alias_kind":"arxiv_version","alias_value":"1405.7105v3","created_at":"2026-05-18T01:43:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7105","created_at":"2026-05-18T01:43:05Z"},{"alias_kind":"pith_short_12","alias_value":"QPSFHL7UB6F4","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QPSFHL7UB6F45HVK","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QPSFHL7U","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:cb24f3530049d2cf8f790da309141946be7b0cc1b310b10070e3b0121964d435","target":"graph","created_at":"2026-05-18T01:43:05Z","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 estimate the fraction of F,G,K stars with close binary companions by analysing multi-epoch stellar spectra from SDSS and LAMOST for radial velocity (RV) variations. We employ a Bayesian method to infer the maximum likelihood of the fraction of binary stars with orbital periods of 1000 days or shorter, assuming a simple model distribution for a binary population with circular orbits. The overall inferred fraction of stars with such a close binary companion is 43.0% \\pm 2.0% for a sample of F, G, K stars from SDSS SEGUE, and 30% \\pm 8.0% in a similar sample from LAMOST. The apparent close bin","authors_text":"Chao Liu, Licai Deng, Ming Yang, Shuang Gao, Stephen Justham, Xiaobin Zhang","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-05-28T02:52:47Z","title":"The binarity of Milky Way F,G,K stars as a function of effective temperature and metallicity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7105","kind":"arxiv","version":3},"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:ce9a1877c3f26417bd5f1e9cb9de9b8d0abe64df80ddffe9a18c73f1a643dd9f","target":"record","created_at":"2026-05-18T01:43:05Z","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":"c94fc58460a6857fdb46407c8b23e2f928e05297b02ca720063031f39782d8e9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-05-28T02:52:47Z","title_canon_sha256":"4a0a5103be07cdaf71353dc94c5f83d1c28c2b586972f53fef17637f22dccdcc"},"schema_version":"1.0","source":{"id":"1405.7105","kind":"arxiv","version":3}},"canonical_sha256":"83e453aff40f8bce9eaa5b64ed6ebd1c39dd2a683b6805638b870aa6e3daa14e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83e453aff40f8bce9eaa5b64ed6ebd1c39dd2a683b6805638b870aa6e3daa14e","first_computed_at":"2026-05-18T01:43:05.494212Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:05.494212Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0Ny1dWR5hs2XO+rksGW/b4jsdxBKqvUPcQ87RBPm52ovke0rdJ5hwnjOpa7qs+pL0/bSPCfNijbGBSJU37dfAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:05.494586Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.7105","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce9a1877c3f26417bd5f1e9cb9de9b8d0abe64df80ddffe9a18c73f1a643dd9f","sha256:cb24f3530049d2cf8f790da309141946be7b0cc1b310b10070e3b0121964d435"],"state_sha256":"40a21907e8de0d081cf05b902f8fe8f7f3a292855671c4f592c9daef61c477e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YvkYXRHFBXTpd7OZTWKiAeMGdjKgu+Ihn8H52ieOwvH4LrmrO/u332/OESLO0zK7KERVGEDPMwSuMJk9BGgQDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T18:42:26.842620Z","bundle_sha256":"defaf6a8fb1c27508a08f678e31ddfe6c3e4b3178786234c52887b5095f727ec"}}