{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:3F4ZMIHDIR75O3OUQESQPD6SJY","short_pith_number":"pith:3F4ZMIHD","canonical_record":{"source":{"id":"1206.3080","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-06-14T12:13:05Z","cross_cats_sorted":[],"title_canon_sha256":"f7ae8e496e8f41bddd11d7096a54e90671c9d07be632288fc6709152b7de02c6","abstract_canon_sha256":"ed57b6acfc4e851620bc40b5e000827069ae43d466ed330d922a6ad4bfbc66e7"},"schema_version":"1.0"},"canonical_sha256":"d9799620e3447fd76dd48125078fd24e2a35ecad4a0e8dcc2541108836ceffce","source":{"kind":"arxiv","id":"1206.3080","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.3080","created_at":"2026-05-18T01:56:58Z"},{"alias_kind":"arxiv_version","alias_value":"1206.3080v1","created_at":"2026-05-18T01:56:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.3080","created_at":"2026-05-18T01:56:58Z"},{"alias_kind":"pith_short_12","alias_value":"3F4ZMIHDIR75","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3F4ZMIHDIR75O3OU","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3F4ZMIHD","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:3F4ZMIHDIR75O3OUQESQPD6SJY","target":"record","payload":{"canonical_record":{"source":{"id":"1206.3080","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-06-14T12:13:05Z","cross_cats_sorted":[],"title_canon_sha256":"f7ae8e496e8f41bddd11d7096a54e90671c9d07be632288fc6709152b7de02c6","abstract_canon_sha256":"ed57b6acfc4e851620bc40b5e000827069ae43d466ed330d922a6ad4bfbc66e7"},"schema_version":"1.0"},"canonical_sha256":"d9799620e3447fd76dd48125078fd24e2a35ecad4a0e8dcc2541108836ceffce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:58.731907Z","signature_b64":"9C9f+P7XK6xoHf++IKj864Wg4Is3Xg9Qmb2nO6r/uumgOvwdH/SN588z9wb0y3t3MmVkLQEwVaSnlAbpptUYCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9799620e3447fd76dd48125078fd24e2a35ecad4a0e8dcc2541108836ceffce","last_reissued_at":"2026-05-18T01:56:58.731355Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:58.731355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.3080","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":"2026-05-18T01:56:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cP3cyK3OkEErSnCMMfd8Ju65Nv94XJcr3Fnoy44Ap1NM4PN64TMKJUvUiZvH4HemGETe1rrEqi3ePItnNLFlDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:22:00.025159Z"},"content_sha256":"55ccddaf965d6c076fe73b08c458e43ff8bab09da735d691a6de71698617b3df","schema_version":"1.0","event_id":"sha256:55ccddaf965d6c076fe73b08c458e43ff8bab09da735d691a6de71698617b3df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:3F4ZMIHDIR75O3OUQESQPD6SJY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The quest for companions to post-common envelope binaries: III. A reexamination of HW Virginis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"F. V. Hessman, J. Deller, K. Beuermann, S. Dreizler","submitted_at":"2012-06-14T12:13:05Z","abstract_excerpt":"We report new mid-eclipse times of the short-period sdB/dM binary HW Vir, which differ substantially from the times predicted by a previous model. The proposed orbits of the two planets in that model are found to be unstable. We present a new secularly stable solution, which involves two companions orbiting HW VIr with periods of 12.7 yr and 55 +/-15 yr. For orbits coplanar with the binary, the inner companion is a giant planet with mass M_3 sin i_3 = 14 M_Jup and the outer one a brown dwarf or low-mass star with a mass of M_4 sin i_4 = 30-120 M_Jup. Using the mercury6 code, we find that such "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.3080","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":"2026-05-18T01:56:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fnk1hhqXi7r/qR5bQWjSWHbcLHOtYBL3haxwCbd6KMXQOyV8L/D8mqyjMQkcIQydrUjw2EYtA9QGFC1pa9fEAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:22:00.025814Z"},"content_sha256":"201fa69f6f2b9155942a78c1e197d9f194cc7793c870328f7f99fa88d8ab0be4","schema_version":"1.0","event_id":"sha256:201fa69f6f2b9155942a78c1e197d9f194cc7793c870328f7f99fa88d8ab0be4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3F4ZMIHDIR75O3OUQESQPD6SJY/bundle.json","state_url":"https://pith.science/pith/3F4ZMIHDIR75O3OUQESQPD6SJY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3F4ZMIHDIR75O3OUQESQPD6SJY/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":"2026-05-31T23:22:00Z","links":{"resolver":"https://pith.science/pith/3F4ZMIHDIR75O3OUQESQPD6SJY","bundle":"https://pith.science/pith/3F4ZMIHDIR75O3OUQESQPD6SJY/bundle.json","state":"https://pith.science/pith/3F4ZMIHDIR75O3OUQESQPD6SJY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3F4ZMIHDIR75O3OUQESQPD6SJY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3F4ZMIHDIR75O3OUQESQPD6SJY","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":"ed57b6acfc4e851620bc40b5e000827069ae43d466ed330d922a6ad4bfbc66e7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-06-14T12:13:05Z","title_canon_sha256":"f7ae8e496e8f41bddd11d7096a54e90671c9d07be632288fc6709152b7de02c6"},"schema_version":"1.0","source":{"id":"1206.3080","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.3080","created_at":"2026-05-18T01:56:58Z"},{"alias_kind":"arxiv_version","alias_value":"1206.3080v1","created_at":"2026-05-18T01:56:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.3080","created_at":"2026-05-18T01:56:58Z"},{"alias_kind":"pith_short_12","alias_value":"3F4ZMIHDIR75","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3F4ZMIHDIR75O3OU","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3F4ZMIHD","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:201fa69f6f2b9155942a78c1e197d9f194cc7793c870328f7f99fa88d8ab0be4","target":"graph","created_at":"2026-05-18T01:56:58Z","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 report new mid-eclipse times of the short-period sdB/dM binary HW Vir, which differ substantially from the times predicted by a previous model. The proposed orbits of the two planets in that model are found to be unstable. We present a new secularly stable solution, which involves two companions orbiting HW VIr with periods of 12.7 yr and 55 +/-15 yr. For orbits coplanar with the binary, the inner companion is a giant planet with mass M_3 sin i_3 = 14 M_Jup and the outer one a brown dwarf or low-mass star with a mass of M_4 sin i_4 = 30-120 M_Jup. Using the mercury6 code, we find that such ","authors_text":"F. V. Hessman, J. Deller, K. Beuermann, S. Dreizler","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-06-14T12:13:05Z","title":"The quest for companions to post-common envelope binaries: III. A reexamination of HW Virginis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.3080","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":"sha256:55ccddaf965d6c076fe73b08c458e43ff8bab09da735d691a6de71698617b3df","target":"record","created_at":"2026-05-18T01:56:58Z","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":"ed57b6acfc4e851620bc40b5e000827069ae43d466ed330d922a6ad4bfbc66e7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-06-14T12:13:05Z","title_canon_sha256":"f7ae8e496e8f41bddd11d7096a54e90671c9d07be632288fc6709152b7de02c6"},"schema_version":"1.0","source":{"id":"1206.3080","kind":"arxiv","version":1}},"canonical_sha256":"d9799620e3447fd76dd48125078fd24e2a35ecad4a0e8dcc2541108836ceffce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9799620e3447fd76dd48125078fd24e2a35ecad4a0e8dcc2541108836ceffce","first_computed_at":"2026-05-18T01:56:58.731355Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:58.731355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9C9f+P7XK6xoHf++IKj864Wg4Is3Xg9Qmb2nO6r/uumgOvwdH/SN588z9wb0y3t3MmVkLQEwVaSnlAbpptUYCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:58.731907Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.3080","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55ccddaf965d6c076fe73b08c458e43ff8bab09da735d691a6de71698617b3df","sha256:201fa69f6f2b9155942a78c1e197d9f194cc7793c870328f7f99fa88d8ab0be4"],"state_sha256":"c9dd6f29c44bb17b0e282c0e97456916398c9388dc8de114eeea882a0bb67ca1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1suKMZLCeR4QgICUBCB/2+6Rz4D+EWO4boKnF7SGGVUnrqrnGkbSEKzTtFoDAs1mD5q6g4TKhqo5xOZeX2AfDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:22:00.029089Z","bundle_sha256":"2a2a580268f15cbcd11d14c85b70c0c895327b3ac6b642d9de3660f4d4b87c89"}}