{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:YYJDAOMAW6YKDWBLZSQFAEBZZC","short_pith_number":"pith:YYJDAOMA","canonical_record":{"source":{"id":"1505.02789","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-11T20:10:28Z","cross_cats_sorted":[],"title_canon_sha256":"497002855f3155cfae6cc97f32b9ca4b219a51470a8dc03a2e635f81b445bf83","abstract_canon_sha256":"010c868d0ae0d95a41f07d2236b698b4c2bbfd441a9da0bbb23515ac1d5ba4e7"},"schema_version":"1.0"},"canonical_sha256":"c612303980b7b0a1d82bcca0501039c8beba2d3c3affeec05223962ad2209f9e","source":{"kind":"arxiv","id":"1505.02789","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02789","created_at":"2026-05-18T02:14:16Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02789v1","created_at":"2026-05-18T02:14:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02789","created_at":"2026-05-18T02:14:16Z"},{"alias_kind":"pith_short_12","alias_value":"YYJDAOMAW6YK","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"YYJDAOMAW6YKDWBL","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"YYJDAOMA","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:YYJDAOMAW6YKDWBLZSQFAEBZZC","target":"record","payload":{"canonical_record":{"source":{"id":"1505.02789","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-11T20:10:28Z","cross_cats_sorted":[],"title_canon_sha256":"497002855f3155cfae6cc97f32b9ca4b219a51470a8dc03a2e635f81b445bf83","abstract_canon_sha256":"010c868d0ae0d95a41f07d2236b698b4c2bbfd441a9da0bbb23515ac1d5ba4e7"},"schema_version":"1.0"},"canonical_sha256":"c612303980b7b0a1d82bcca0501039c8beba2d3c3affeec05223962ad2209f9e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:16.123542Z","signature_b64":"LrEXC+/B/kNXuxsfcoGQzcu2+wD216uVivETLYK3pD+socQg5sciEGEAnLwTiaBF4BrEwWW7qXbyigZ4P9TbDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c612303980b7b0a1d82bcca0501039c8beba2d3c3affeec05223962ad2209f9e","last_reissued_at":"2026-05-18T02:14:16.122830Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:16.122830Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.02789","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":"2026-05-18T02:14:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WZyLp2CNl57oRHteZIl7I3LZFHLg0pU6Z6M8Qowuv5GgEUqx/tUW+TpjZMfXr2I2MKyFNMk6z73pHVrs/QB0DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T08:02:41.355449Z"},"content_sha256":"5b10ff6d39dbb8c9418c01aa7c48410dbc748dcb0c0b2c20b8c395f2a1278815","schema_version":"1.0","event_id":"sha256:5b10ff6d39dbb8c9418c01aa7c48410dbc748dcb0c0b2c20b8c395f2a1278815"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:YYJDAOMAW6YKDWBLZSQFAEBZZC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Type II Cepheids in the Milky Way disc. Chemical composition of two new W Vir stars: DD Vel and HQ Car","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Lemasle, G. Bono, G. Galazutdinov, I. Saviane, I. Yegorova, K. Genovali, L. Inno, P. Fran\\c{c}ois, R. Da Silva, V. Kovtyukh","submitted_at":"2015-05-11T20:10:28Z","abstract_excerpt":"A robust classification of Cepheids into their different sub-classes and, in particular, between classical and Type II Cepheids, is necessary to properly calibrate the period-luminosity relations and for populations studies in the Galactic disc. Type II Cepheids are, however, very diverse, and classifications based either on intrinsic (period, light curve) or external parameters (e.g., [Fe/H], |z|) do not provide a unique classification. We want to ascertain the classification of two Cepheids, HQ Car and DD Vel, that are sometimes classified as classical Cepheids and sometimes as Type II Cephe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02789","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":"2026-05-18T02:14:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"siXSYFeVSDUWTTcjDp1L+NKE0C9eRmJUTLhvCu0jpEi5qiU2TryeBUrf6iQGoD5ACIatiFvTbPEoX5O+ksfbCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T08:02:41.356030Z"},"content_sha256":"6e4485cc76e873da4c8f07a18270a6ad36d02140996094fc3516495db60f1c45","schema_version":"1.0","event_id":"sha256:6e4485cc76e873da4c8f07a18270a6ad36d02140996094fc3516495db60f1c45"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YYJDAOMAW6YKDWBLZSQFAEBZZC/bundle.json","state_url":"https://pith.science/pith/YYJDAOMAW6YKDWBLZSQFAEBZZC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YYJDAOMAW6YKDWBLZSQFAEBZZC/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":"2026-05-25T08:02:41Z","links":{"resolver":"https://pith.science/pith/YYJDAOMAW6YKDWBLZSQFAEBZZC","bundle":"https://pith.science/pith/YYJDAOMAW6YKDWBLZSQFAEBZZC/bundle.json","state":"https://pith.science/pith/YYJDAOMAW6YKDWBLZSQFAEBZZC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YYJDAOMAW6YKDWBLZSQFAEBZZC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:YYJDAOMAW6YKDWBLZSQFAEBZZC","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":"010c868d0ae0d95a41f07d2236b698b4c2bbfd441a9da0bbb23515ac1d5ba4e7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-11T20:10:28Z","title_canon_sha256":"497002855f3155cfae6cc97f32b9ca4b219a51470a8dc03a2e635f81b445bf83"},"schema_version":"1.0","source":{"id":"1505.02789","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02789","created_at":"2026-05-18T02:14:16Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02789v1","created_at":"2026-05-18T02:14:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02789","created_at":"2026-05-18T02:14:16Z"},{"alias_kind":"pith_short_12","alias_value":"YYJDAOMAW6YK","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"YYJDAOMAW6YKDWBL","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"YYJDAOMA","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:6e4485cc76e873da4c8f07a18270a6ad36d02140996094fc3516495db60f1c45","target":"graph","created_at":"2026-05-18T02:14:16Z","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 robust classification of Cepheids into their different sub-classes and, in particular, between classical and Type II Cepheids, is necessary to properly calibrate the period-luminosity relations and for populations studies in the Galactic disc. Type II Cepheids are, however, very diverse, and classifications based either on intrinsic (period, light curve) or external parameters (e.g., [Fe/H], |z|) do not provide a unique classification. We want to ascertain the classification of two Cepheids, HQ Car and DD Vel, that are sometimes classified as classical Cepheids and sometimes as Type II Cephe","authors_text":"B. Lemasle, G. Bono, G. Galazutdinov, I. Saviane, I. Yegorova, K. Genovali, L. Inno, P. Fran\\c{c}ois, R. Da Silva, V. Kovtyukh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-11T20:10:28Z","title":"Type II Cepheids in the Milky Way disc. Chemical composition of two new W Vir stars: DD Vel and HQ Car"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02789","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":"sha256:5b10ff6d39dbb8c9418c01aa7c48410dbc748dcb0c0b2c20b8c395f2a1278815","target":"record","created_at":"2026-05-18T02:14:16Z","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":"010c868d0ae0d95a41f07d2236b698b4c2bbfd441a9da0bbb23515ac1d5ba4e7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-11T20:10:28Z","title_canon_sha256":"497002855f3155cfae6cc97f32b9ca4b219a51470a8dc03a2e635f81b445bf83"},"schema_version":"1.0","source":{"id":"1505.02789","kind":"arxiv","version":1}},"canonical_sha256":"c612303980b7b0a1d82bcca0501039c8beba2d3c3affeec05223962ad2209f9e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c612303980b7b0a1d82bcca0501039c8beba2d3c3affeec05223962ad2209f9e","first_computed_at":"2026-05-18T02:14:16.122830Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:16.122830Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LrEXC+/B/kNXuxsfcoGQzcu2+wD216uVivETLYK3pD+socQg5sciEGEAnLwTiaBF4BrEwWW7qXbyigZ4P9TbDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:16.123542Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.02789","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b10ff6d39dbb8c9418c01aa7c48410dbc748dcb0c0b2c20b8c395f2a1278815","sha256:6e4485cc76e873da4c8f07a18270a6ad36d02140996094fc3516495db60f1c45"],"state_sha256":"cd83130a9200b64f3e00ed6a0d37aca17325d1106cb849138911690fecd2f6c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AIegbQXmgQwpAtT42V3s7RvdRSlle1xPvW2griHyI47pC3955ffQTh/SCJ9sb7j4rKKFXfeOp5uui84/nj5tAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T08:02:41.359879Z","bundle_sha256":"21257e7620adf1145199047ec33b740f87c55d6260b335ff8b982001bfa6b1ab"}}