{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:IELZZBPZMETNNGTDYC3RAJKLN2","short_pith_number":"pith:IELZZBPZ","canonical_record":{"source":{"id":"0912.0912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-12-04T18:37:43Z","cross_cats_sorted":[],"title_canon_sha256":"be636df7bf89e95a91d061f1ed2ccb458d3fb73d04a3392d6f4809f585704b81","abstract_canon_sha256":"3ad0383d5e4624ddc34b534449a6a63b1dfb22913fe1df258c0f2b6fc2342ede"},"schema_version":"1.0"},"canonical_sha256":"41179c85f96126d69a63c0b710254b6eb4628940f0c9f7e5b95545738048e830","source":{"kind":"arxiv","id":"0912.0912","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.0912","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"arxiv_version","alias_value":"0912.0912v1","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.0912","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_12","alias_value":"IELZZBPZMETN","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_16","alias_value":"IELZZBPZMETNNGTD","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_8","alias_value":"IELZZBPZ","created_at":"2026-07-04T17:21:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:IELZZBPZMETNNGTDYC3RAJKLN2","target":"record","payload":{"canonical_record":{"source":{"id":"0912.0912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-12-04T18:37:43Z","cross_cats_sorted":[],"title_canon_sha256":"be636df7bf89e95a91d061f1ed2ccb458d3fb73d04a3392d6f4809f585704b81","abstract_canon_sha256":"3ad0383d5e4624ddc34b534449a6a63b1dfb22913fe1df258c0f2b6fc2342ede"},"schema_version":"1.0"},"canonical_sha256":"41179c85f96126d69a63c0b710254b6eb4628940f0c9f7e5b95545738048e830","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:21:18.361178Z","signature_b64":"q4ho5L+2NitPZhuKrXPPnNyzC5JmXgCIlQnS3cFp7HV+YGKcNuuENCEGE9Ee3C5Q2XatwCPvf3uMoWiBW2W3AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41179c85f96126d69a63c0b710254b6eb4628940f0c9f7e5b95545738048e830","last_reissued_at":"2026-07-04T17:21:18.360727Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:21:18.360727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0912.0912","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":"2026-07-04T17:21:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G101yulx9eC1pOSM3uMAo/tTfUNMwHkQlbaVg9PgM/sGZgxqcytamBM4TmZw+WIygbCwXd9zTyzKoYE29cpZBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:48:52.402194Z"},"content_sha256":"b8024d83826dc057e2d7a8a64300fd2cd344a942538e501bc6b477de207fba87","schema_version":"1.0","event_id":"sha256:b8024d83826dc057e2d7a8a64300fd2cd344a942538e501bc6b477de207fba87"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:IELZZBPZMETNNGTDYC3RAJKLN2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Activity on the M star of QS Vir","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Tappert, R. Baptista, S. Kafka, T. Ribeiro","submitted_at":"2009-12-04T18:37:43Z","abstract_excerpt":"We report analysis of VRIJH photometry, and phase-resolved optical spectroscopy of the eclipsing DA white dwarf plus dMe dwarf binary QS Vir. Modeling of the photometric data yields an inclination of $i = 74.9\\pm0.6$ and a mass ratio of $q = M_2/M_1 = 0.50\\pm0.05$. Our Doppler maps indicate the presence of material in the Roche lobe of the white dwarf, at a location near the M star, likely due to accretion from the stellar wind of the M star (as opposed to Roche-lobe overflow accretion). We also constructed images of the brightness distribution of the M star at different epochs which reveal th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.0912","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0912.0912/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T17:21:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BoKv6rbwPtS8zsHiKLQEaVnT4xmTiFEoh6uIDVUNZl49DG8dHwYONvgguu9+WFnSLtHQJjHXsiQSXmIqeQ6xBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:48:52.402691Z"},"content_sha256":"23377a887ffe2c9c017a60518c3771e4a7e52ae8945879eb52c5d2f921e015ad","schema_version":"1.0","event_id":"sha256:23377a887ffe2c9c017a60518c3771e4a7e52ae8945879eb52c5d2f921e015ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IELZZBPZMETNNGTDYC3RAJKLN2/bundle.json","state_url":"https://pith.science/pith/IELZZBPZMETNNGTDYC3RAJKLN2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IELZZBPZMETNNGTDYC3RAJKLN2/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":"2026-08-03T21:48:52Z","links":{"resolver":"https://pith.science/pith/IELZZBPZMETNNGTDYC3RAJKLN2","bundle":"https://pith.science/pith/IELZZBPZMETNNGTDYC3RAJKLN2/bundle.json","state":"https://pith.science/pith/IELZZBPZMETNNGTDYC3RAJKLN2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IELZZBPZMETNNGTDYC3RAJKLN2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:IELZZBPZMETNNGTDYC3RAJKLN2","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":"3ad0383d5e4624ddc34b534449a6a63b1dfb22913fe1df258c0f2b6fc2342ede","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-12-04T18:37:43Z","title_canon_sha256":"be636df7bf89e95a91d061f1ed2ccb458d3fb73d04a3392d6f4809f585704b81"},"schema_version":"1.0","source":{"id":"0912.0912","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.0912","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"arxiv_version","alias_value":"0912.0912v1","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.0912","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_12","alias_value":"IELZZBPZMETN","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_16","alias_value":"IELZZBPZMETNNGTD","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_8","alias_value":"IELZZBPZ","created_at":"2026-07-04T17:21:18Z"}],"graph_snapshots":[{"event_id":"sha256:23377a887ffe2c9c017a60518c3771e4a7e52ae8945879eb52c5d2f921e015ad","target":"graph","created_at":"2026-07-04T17:21:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0912.0912/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report analysis of VRIJH photometry, and phase-resolved optical spectroscopy of the eclipsing DA white dwarf plus dMe dwarf binary QS Vir. Modeling of the photometric data yields an inclination of $i = 74.9\\pm0.6$ and a mass ratio of $q = M_2/M_1 = 0.50\\pm0.05$. Our Doppler maps indicate the presence of material in the Roche lobe of the white dwarf, at a location near the M star, likely due to accretion from the stellar wind of the M star (as opposed to Roche-lobe overflow accretion). We also constructed images of the brightness distribution of the M star at different epochs which reveal th","authors_text":"C. Tappert, R. Baptista, S. Kafka, T. Ribeiro","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-12-04T18:37:43Z","title":"Activity on the M star of QS Vir"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.0912","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:b8024d83826dc057e2d7a8a64300fd2cd344a942538e501bc6b477de207fba87","target":"record","created_at":"2026-07-04T17:21:18Z","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":"3ad0383d5e4624ddc34b534449a6a63b1dfb22913fe1df258c0f2b6fc2342ede","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-12-04T18:37:43Z","title_canon_sha256":"be636df7bf89e95a91d061f1ed2ccb458d3fb73d04a3392d6f4809f585704b81"},"schema_version":"1.0","source":{"id":"0912.0912","kind":"arxiv","version":1}},"canonical_sha256":"41179c85f96126d69a63c0b710254b6eb4628940f0c9f7e5b95545738048e830","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41179c85f96126d69a63c0b710254b6eb4628940f0c9f7e5b95545738048e830","first_computed_at":"2026-07-04T17:21:18.360727Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:21:18.360727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q4ho5L+2NitPZhuKrXPPnNyzC5JmXgCIlQnS3cFp7HV+YGKcNuuENCEGE9Ee3C5Q2XatwCPvf3uMoWiBW2W3AA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:21:18.361178Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.0912","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b8024d83826dc057e2d7a8a64300fd2cd344a942538e501bc6b477de207fba87","sha256:23377a887ffe2c9c017a60518c3771e4a7e52ae8945879eb52c5d2f921e015ad"],"state_sha256":"56541c62f801cdc1af947d90c4b56eff778bb2f6fd088cee998d72e9f4824314"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7a53EzBhVe0RrKFOwTImZ9y3N68sYVU6CDn5u/BI66BAcQrwlbnhf7Q/7TclDfFDXX7hZZ9AgIG/RnQg1yRuAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:48:52.407576Z","bundle_sha256":"86380391b21893d0ae7101bfbae732e6980af26403d68158d8d7a7cb0b5f1880"}}