{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:GCB5OIDV5XPX7AOWXV27FI4SZN","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":"61905f890b4b3412fa699bf46994a49a5cff79dc077505c0615174e6ae385655","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-01-07T21:24:21Z","title_canon_sha256":"9da7d27793665be83c90c244764a725686140019eea668f73f2b22ce67bb6465"},"schema_version":"1.0","source":{"id":"0901.0934","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.0934","created_at":"2026-05-18T02:15:03Z"},{"alias_kind":"arxiv_version","alias_value":"0901.0934v2","created_at":"2026-05-18T02:15:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.0934","created_at":"2026-05-18T02:15:03Z"},{"alias_kind":"pith_short_12","alias_value":"GCB5OIDV5XPX","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GCB5OIDV5XPX7AOW","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GCB5OIDV","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:8acc671a62ffe997db9583b6ab671c2c3be6ba648feddef9e1be361c72b3740c","target":"graph","created_at":"2026-05-18T02:15:03Z","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":"This paper is a follow-up of the vast effort to collect radial velocity data for stars belonging to the Hipparcos survey. We aim at extending the orbital data available for binaries with M giant primaries. The data will be used in the companion papers of this series to (i) derive the binary frequency among M giants and compare it to that of K giants (Paper II), and (ii) analyse the eccentricity-period diagram and the mass-function distribution (Paper III). Keplerian solutions are fitted to radial-velocity data. However, for several stars, no satisfactory solution could be found, despite the fa","authors_text":"A. Frankowski, A. Jorissen, B. Famaey, D. Pourbaix, M. Mayor, S. Udry, S. Van Eck","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-01-07T21:24:21Z","title":"Spectroscopic binaries among Hipparcos M giants I. Data, orbits, and intrinsic variations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.0934","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":"sha256:68c76820b699b2c3ef3fa1b171f3ee69d185b9e32bd9f55abf9eafd016b6ec7e","target":"record","created_at":"2026-05-18T02:15:03Z","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":"61905f890b4b3412fa699bf46994a49a5cff79dc077505c0615174e6ae385655","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-01-07T21:24:21Z","title_canon_sha256":"9da7d27793665be83c90c244764a725686140019eea668f73f2b22ce67bb6465"},"schema_version":"1.0","source":{"id":"0901.0934","kind":"arxiv","version":2}},"canonical_sha256":"3083d72075eddf7f81d6bd75f2a392cb59715cd5d22907264cef541d154fc1c8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3083d72075eddf7f81d6bd75f2a392cb59715cd5d22907264cef541d154fc1c8","first_computed_at":"2026-05-18T02:15:03.018488Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:03.018488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fm4deqweHlUWV9yc4oC5nyEcnj5YYHrBtrSohk9zWxIM6mqSCi/aMR8boq663egVVVJyT5hCa9gdjshngYGoAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:03.018920Z","signed_message":"canonical_sha256_bytes"},"source_id":"0901.0934","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68c76820b699b2c3ef3fa1b171f3ee69d185b9e32bd9f55abf9eafd016b6ec7e","sha256:8acc671a62ffe997db9583b6ab671c2c3be6ba648feddef9e1be361c72b3740c"],"state_sha256":"1ef2487e7640cabe5c17fd4ad449e6a260f0bdd3a5544aab1235d9214e05e649"}