{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:RXFKS3MZIQK5ZEH3KB2DXEWQTD","short_pith_number":"pith:RXFKS3MZ","canonical_record":{"source":{"id":"1307.2021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T10:25:05Z","cross_cats_sorted":[],"title_canon_sha256":"d5097db4b8daf9ea7373b5aa3e4a72b8f59abeaf5255e7d7395a24ea00abe709","abstract_canon_sha256":"6011bdadf6d1666190f81a73a39f5056580f8a0887bcb5ade5a9134766dbef20"},"schema_version":"1.0"},"canonical_sha256":"8dcaa96d994415dc90fb50743b92d098e70f3a78ccf2a5d34f68c32215292a95","source":{"kind":"arxiv","id":"1307.2021","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2021","created_at":"2026-05-18T01:48:58Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2021v1","created_at":"2026-05-18T01:48:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2021","created_at":"2026-05-18T01:48:58Z"},{"alias_kind":"pith_short_12","alias_value":"RXFKS3MZIQK5","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"RXFKS3MZIQK5ZEH3","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"RXFKS3MZ","created_at":"2026-05-18T12:27:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:RXFKS3MZIQK5ZEH3KB2DXEWQTD","target":"record","payload":{"canonical_record":{"source":{"id":"1307.2021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T10:25:05Z","cross_cats_sorted":[],"title_canon_sha256":"d5097db4b8daf9ea7373b5aa3e4a72b8f59abeaf5255e7d7395a24ea00abe709","abstract_canon_sha256":"6011bdadf6d1666190f81a73a39f5056580f8a0887bcb5ade5a9134766dbef20"},"schema_version":"1.0"},"canonical_sha256":"8dcaa96d994415dc90fb50743b92d098e70f3a78ccf2a5d34f68c32215292a95","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:58.798241Z","signature_b64":"O/19+Ts1qDHAcTqOxpKEjVxN56uWtAyZ9DW6GO0iqhRuEMbO7bhj39K7+gCY+u6IDDPQyOPAqfbBgmcFrqryBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8dcaa96d994415dc90fb50743b92d098e70f3a78ccf2a5d34f68c32215292a95","last_reissued_at":"2026-05-18T01:48:58.797733Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:58.797733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.2021","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":"2026-05-18T01:48:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NZnh4O6scEVlrz4+dl3MdsUTVQv0AC/oYNoGp7sESC05a1RcL/on5YVRvJgHt3osCxoih16uUgnUiWMYlsp3CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:19:34.284286Z"},"content_sha256":"5207c85be20d9a6da61edef6d2d870fe600340a8a52481c4ca18a78383cea180","schema_version":"1.0","event_id":"sha256:5207c85be20d9a6da61edef6d2d870fe600340a8a52481c4ca18a78383cea180"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:RXFKS3MZIQK5ZEH3KB2DXEWQTD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"DA white dwarfs observed in LAMOST pilot survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A-Li Luo, Chao Liu, Fan Yang, Ge Jin, Hai-long Yuan, Hao-Tong Zhang, Heidi Jo Newberg, Jeffrey L. Carlin, Jing Li, Kenneth Carrell, Li-Cai Deng, Sebastien L\\'epine, Shuang Gao, Yan Xu, Yong-Heng Zhao, Yue-Yang Zhang, Zhong-Rui Bai","submitted_at":"2013-07-08T10:25:05Z","abstract_excerpt":"A total of $\\sim640,000$ objects from LAMOST pilot survey have been publicly released. In this work, we present a catalog of DA white dwarfs from the entire pilot survey. We outline a new algorithm for the selection of white dwarfs by fitting S\\'ersic profiles to the Balmer H$\\beta$, H$\\gamma$ and H$\\delta$ lines of the spectra, and calculating the equivalent width of the CaII K line. 2964 candidates are selected by constraining the fitting parameters and the equivalent width of CaII K line. All the spectra of candidates are visually inspected. We identify 230 (59 of them are already in Villan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2021","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":"2026-05-18T01:48:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kKGjpuPnbxkB9paUJhqvlMPISg5IjXqhw8+HKpaHhFYCyMctS7nrg+kw20IIPSiffI3YE7fAjBvA+gXJHPv0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:19:34.284871Z"},"content_sha256":"e8e766b06cb4ea014e74213df4ca66731ebb899887e7d7d025805cf5a276e7eb","schema_version":"1.0","event_id":"sha256:e8e766b06cb4ea014e74213df4ca66731ebb899887e7d7d025805cf5a276e7eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RXFKS3MZIQK5ZEH3KB2DXEWQTD/bundle.json","state_url":"https://pith.science/pith/RXFKS3MZIQK5ZEH3KB2DXEWQTD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RXFKS3MZIQK5ZEH3KB2DXEWQTD/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":"2026-05-30T13:19:34Z","links":{"resolver":"https://pith.science/pith/RXFKS3MZIQK5ZEH3KB2DXEWQTD","bundle":"https://pith.science/pith/RXFKS3MZIQK5ZEH3KB2DXEWQTD/bundle.json","state":"https://pith.science/pith/RXFKS3MZIQK5ZEH3KB2DXEWQTD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RXFKS3MZIQK5ZEH3KB2DXEWQTD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:RXFKS3MZIQK5ZEH3KB2DXEWQTD","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":"6011bdadf6d1666190f81a73a39f5056580f8a0887bcb5ade5a9134766dbef20","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T10:25:05Z","title_canon_sha256":"d5097db4b8daf9ea7373b5aa3e4a72b8f59abeaf5255e7d7395a24ea00abe709"},"schema_version":"1.0","source":{"id":"1307.2021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2021","created_at":"2026-05-18T01:48:58Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2021v1","created_at":"2026-05-18T01:48:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2021","created_at":"2026-05-18T01:48:58Z"},{"alias_kind":"pith_short_12","alias_value":"RXFKS3MZIQK5","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"RXFKS3MZIQK5ZEH3","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"RXFKS3MZ","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:e8e766b06cb4ea014e74213df4ca66731ebb899887e7d7d025805cf5a276e7eb","target":"graph","created_at":"2026-05-18T01:48:58Z","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":"A total of $\\sim640,000$ objects from LAMOST pilot survey have been publicly released. In this work, we present a catalog of DA white dwarfs from the entire pilot survey. We outline a new algorithm for the selection of white dwarfs by fitting S\\'ersic profiles to the Balmer H$\\beta$, H$\\gamma$ and H$\\delta$ lines of the spectra, and calculating the equivalent width of the CaII K line. 2964 candidates are selected by constraining the fitting parameters and the equivalent width of CaII K line. All the spectra of candidates are visually inspected. We identify 230 (59 of them are already in Villan","authors_text":"A-Li Luo, Chao Liu, Fan Yang, Ge Jin, Hai-long Yuan, Hao-Tong Zhang, Heidi Jo Newberg, Jeffrey L. Carlin, Jing Li, Kenneth Carrell, Li-Cai Deng, Sebastien L\\'epine, Shuang Gao, Yan Xu, Yong-Heng Zhao, Yue-Yang Zhang, Zhong-Rui Bai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T10:25:05Z","title":"DA white dwarfs observed in LAMOST pilot survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2021","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":"sha256:5207c85be20d9a6da61edef6d2d870fe600340a8a52481c4ca18a78383cea180","target":"record","created_at":"2026-05-18T01:48:58Z","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":"6011bdadf6d1666190f81a73a39f5056580f8a0887bcb5ade5a9134766dbef20","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T10:25:05Z","title_canon_sha256":"d5097db4b8daf9ea7373b5aa3e4a72b8f59abeaf5255e7d7395a24ea00abe709"},"schema_version":"1.0","source":{"id":"1307.2021","kind":"arxiv","version":1}},"canonical_sha256":"8dcaa96d994415dc90fb50743b92d098e70f3a78ccf2a5d34f68c32215292a95","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8dcaa96d994415dc90fb50743b92d098e70f3a78ccf2a5d34f68c32215292a95","first_computed_at":"2026-05-18T01:48:58.797733Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:58.797733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O/19+Ts1qDHAcTqOxpKEjVxN56uWtAyZ9DW6GO0iqhRuEMbO7bhj39K7+gCY+u6IDDPQyOPAqfbBgmcFrqryBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:58.798241Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.2021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5207c85be20d9a6da61edef6d2d870fe600340a8a52481c4ca18a78383cea180","sha256:e8e766b06cb4ea014e74213df4ca66731ebb899887e7d7d025805cf5a276e7eb"],"state_sha256":"f551c99d3fbe0fb63f105d2bc1c4f966ad739cddc44506a0c011a2ffbbd9ca5c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q3dLGBP+uOcKX5ontL+M1mHfopJhMCf5ZqXU2AKatwr+X08WnRsQ0ohpxH0lkxQcacqTUG1EBQdj3GdBwpU6AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T13:19:34.287128Z","bundle_sha256":"b65f02dcdd29721ba207a1f039f71e112ec5db07b0c57579e27ae1a7b38c9269"}}