{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:5VPLA7X4QEVDVN76M4R22V57NG","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":"a7504a83df2164d6bdfb89dd20df4a482c9a43baacc1a6f8f3de3f9ebadf8ee8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-04T16:36:50Z","title_canon_sha256":"09d091a3405fd87317c5034f87199f55ca0b460a9315c2cac764b137853e605e"},"schema_version":"1.0","source":{"id":"1010.0638","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.0638","created_at":"2026-05-18T02:05:11Z"},{"alias_kind":"arxiv_version","alias_value":"1010.0638v1","created_at":"2026-05-18T02:05:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.0638","created_at":"2026-05-18T02:05:11Z"},{"alias_kind":"pith_short_12","alias_value":"5VPLA7X4QEVD","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"5VPLA7X4QEVDVN76","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"5VPLA7X4","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:2242493699bb4ab5c1cd6358d3f13bb5b288f33b58eec53fb98ea71640f4b374","target":"graph","created_at":"2026-05-18T02:05:11Z","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 basic properties of primary stars that initiate a common envelope (CE) in a binary, while on the giant branch. We use the population-synthesis code described in Politano et al. (2010) and follow the evolution of a population of binary stars up to the point where the primary fills its Roche lobe and initiates a CE. We then collect the properties of each system, in particular the donor mass and the binding energy of the donor's envelope, which are important for the treatment of a CE. We find that for most CEs, the donor mass is sufficiently low to define the core-envelope boundary rea","authors_text":"Marc van der Sluys, Michael Politano, Ronald E. Taam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-04T16:36:50Z","title":"Masses and envelope binding energies of primary stars at the onset of a common envelope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.0638","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":"sha256:1ea6ab0ee2021a28c7b3b3faf91cbf04c4e9744bb51ee226dd9b2e866e8816ad","target":"record","created_at":"2026-05-18T02:05:11Z","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":"a7504a83df2164d6bdfb89dd20df4a482c9a43baacc1a6f8f3de3f9ebadf8ee8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-04T16:36:50Z","title_canon_sha256":"09d091a3405fd87317c5034f87199f55ca0b460a9315c2cac764b137853e605e"},"schema_version":"1.0","source":{"id":"1010.0638","kind":"arxiv","version":1}},"canonical_sha256":"ed5eb07efc812a3ab7fe6723ad57bf6995c99944b5ce5327099fdbf95a29db78","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed5eb07efc812a3ab7fe6723ad57bf6995c99944b5ce5327099fdbf95a29db78","first_computed_at":"2026-05-18T02:05:11.806376Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:11.806376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E4/qVPTHPXkod5b9HTJ4gj/fK55/eog5iFbw9qdelNZ77xahPv+cvtNeMTZ630YWDRrPHil1OWOL3wXXjVUqCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:11.807141Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.0638","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ea6ab0ee2021a28c7b3b3faf91cbf04c4e9744bb51ee226dd9b2e866e8816ad","sha256:2242493699bb4ab5c1cd6358d3f13bb5b288f33b58eec53fb98ea71640f4b374"],"state_sha256":"06373f545cfb1dbc4a2d43500098ef9ac8dcc9338aa5ba7b30c069ad254a7f63"}