{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7ZSCDAYJV75GAJDEBMZHKNMWWR","short_pith_number":"pith:7ZSCDAYJ","canonical_record":{"source":{"id":"1706.07437","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-22T18:00:15Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"96a72c505d6fe2cce293586454a68e423c835c6a4a88a45a20dc7ab4eb844d1c","abstract_canon_sha256":"8144fc8f6a5f5c93a3a9ccb2d3dc3b9e13bb918bd8a5fbecba598b42cc26cfe6"},"schema_version":"1.0"},"canonical_sha256":"fe64218309affa6024640b32753596b4795c9da3b482ace7f32774baa8bafad3","source":{"kind":"arxiv","id":"1706.07437","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.07437","created_at":"2026-05-18T00:40:02Z"},{"alias_kind":"arxiv_version","alias_value":"1706.07437v1","created_at":"2026-05-18T00:40:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.07437","created_at":"2026-05-18T00:40:02Z"},{"alias_kind":"pith_short_12","alias_value":"7ZSCDAYJV75G","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7ZSCDAYJV75GAJDE","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7ZSCDAYJ","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7ZSCDAYJV75GAJDEBMZHKNMWWR","target":"record","payload":{"canonical_record":{"source":{"id":"1706.07437","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-22T18:00:15Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"96a72c505d6fe2cce293586454a68e423c835c6a4a88a45a20dc7ab4eb844d1c","abstract_canon_sha256":"8144fc8f6a5f5c93a3a9ccb2d3dc3b9e13bb918bd8a5fbecba598b42cc26cfe6"},"schema_version":"1.0"},"canonical_sha256":"fe64218309affa6024640b32753596b4795c9da3b482ace7f32774baa8bafad3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:02.963715Z","signature_b64":"k/nymt2jkdpPpGMQEUjYCHXpH5MtmX+7oOI6gU3QYTDexcOoKo81PZlvloTeh4OZTrnGfWROuuSTdRoeQoQHCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe64218309affa6024640b32753596b4795c9da3b482ace7f32774baa8bafad3","last_reissued_at":"2026-05-18T00:40:02.963224Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:02.963224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.07437","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":"2026-05-18T00:40:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pyIdHEGC+aXK6DMHiwi+FZlo0kmxDLiyUiAsgSNK0qwREXEULjQJ98qNc8v8vNMTeWkh1xGgxfwgmLKtpl2XDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T14:10:09.745880Z"},"content_sha256":"17a26a50e0e0c1f6a2a62203b32d6e725429161d3e8d18a50b5e2eaa459057ad","schema_version":"1.0","event_id":"sha256:17a26a50e0e0c1f6a2a62203b32d6e725429161d3e8d18a50b5e2eaa459057ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7ZSCDAYJV75GAJDEBMZHKNMWWR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Next Generation Virgo Cluster Survey. XXVIII. Characterization of the Galactic White Dwarf Population","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Alan McConnachie, David A. Hanes, Else Starkenburg, Jean-Charles Cuillandre, Laura Ferrarese, Luciana Bianchi, Nicholas J. Fantin, Patrick C\\^ot\\'e, S.D.J. Gwyn","submitted_at":"2017-06-22T18:00:15Z","abstract_excerpt":"We use three different techniques to identify hundreds of white dwarf (WD) candidates in the Next Generation Virgo Cluster Survey (NGVS) based on photometry from the NGVS and GUViCS, and proper motions derived from the NGVS and the Sloan Digital Sky Survey (SDSS). Photometric distances for these candidates are calculated using theoretical color-absolute magnitude relations while effective temperatures are measured by fitting their spectral energy distributions. Disk and halo WD candidates are separated using a tangential velocity cut of 200 km~s$^{-1}$ in a reduced proper motion diagram, which"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.07437","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":"2026-05-18T00:40:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/PbObQkw0Hx2fx6x6T3EGyc4reuKDGuNvrgLKjrjmWd5eoPfdz6K7dx4HLFrg6yKGouJNuucTbfMvPb/aqekCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T14:10:09.746565Z"},"content_sha256":"aab758ea02acc44fa7df81738566817f3ba78a01c257ef5064ab6a44aca603c1","schema_version":"1.0","event_id":"sha256:aab758ea02acc44fa7df81738566817f3ba78a01c257ef5064ab6a44aca603c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7ZSCDAYJV75GAJDEBMZHKNMWWR/bundle.json","state_url":"https://pith.science/pith/7ZSCDAYJV75GAJDEBMZHKNMWWR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7ZSCDAYJV75GAJDEBMZHKNMWWR/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":"2026-05-23T14:10:09Z","links":{"resolver":"https://pith.science/pith/7ZSCDAYJV75GAJDEBMZHKNMWWR","bundle":"https://pith.science/pith/7ZSCDAYJV75GAJDEBMZHKNMWWR/bundle.json","state":"https://pith.science/pith/7ZSCDAYJV75GAJDEBMZHKNMWWR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7ZSCDAYJV75GAJDEBMZHKNMWWR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7ZSCDAYJV75GAJDEBMZHKNMWWR","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":"8144fc8f6a5f5c93a3a9ccb2d3dc3b9e13bb918bd8a5fbecba598b42cc26cfe6","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-22T18:00:15Z","title_canon_sha256":"96a72c505d6fe2cce293586454a68e423c835c6a4a88a45a20dc7ab4eb844d1c"},"schema_version":"1.0","source":{"id":"1706.07437","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.07437","created_at":"2026-05-18T00:40:02Z"},{"alias_kind":"arxiv_version","alias_value":"1706.07437v1","created_at":"2026-05-18T00:40:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.07437","created_at":"2026-05-18T00:40:02Z"},{"alias_kind":"pith_short_12","alias_value":"7ZSCDAYJV75G","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7ZSCDAYJV75GAJDE","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7ZSCDAYJ","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:aab758ea02acc44fa7df81738566817f3ba78a01c257ef5064ab6a44aca603c1","target":"graph","created_at":"2026-05-18T00:40:02Z","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 use three different techniques to identify hundreds of white dwarf (WD) candidates in the Next Generation Virgo Cluster Survey (NGVS) based on photometry from the NGVS and GUViCS, and proper motions derived from the NGVS and the Sloan Digital Sky Survey (SDSS). Photometric distances for these candidates are calculated using theoretical color-absolute magnitude relations while effective temperatures are measured by fitting their spectral energy distributions. Disk and halo WD candidates are separated using a tangential velocity cut of 200 km~s$^{-1}$ in a reduced proper motion diagram, which","authors_text":"Alan McConnachie, David A. Hanes, Else Starkenburg, Jean-Charles Cuillandre, Laura Ferrarese, Luciana Bianchi, Nicholas J. Fantin, Patrick C\\^ot\\'e, S.D.J. Gwyn","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-22T18:00:15Z","title":"The Next Generation Virgo Cluster Survey. XXVIII. Characterization of the Galactic White Dwarf Population"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.07437","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":"sha256:17a26a50e0e0c1f6a2a62203b32d6e725429161d3e8d18a50b5e2eaa459057ad","target":"record","created_at":"2026-05-18T00:40:02Z","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":"8144fc8f6a5f5c93a3a9ccb2d3dc3b9e13bb918bd8a5fbecba598b42cc26cfe6","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-22T18:00:15Z","title_canon_sha256":"96a72c505d6fe2cce293586454a68e423c835c6a4a88a45a20dc7ab4eb844d1c"},"schema_version":"1.0","source":{"id":"1706.07437","kind":"arxiv","version":1}},"canonical_sha256":"fe64218309affa6024640b32753596b4795c9da3b482ace7f32774baa8bafad3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe64218309affa6024640b32753596b4795c9da3b482ace7f32774baa8bafad3","first_computed_at":"2026-05-18T00:40:02.963224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:02.963224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k/nymt2jkdpPpGMQEUjYCHXpH5MtmX+7oOI6gU3QYTDexcOoKo81PZlvloTeh4OZTrnGfWROuuSTdRoeQoQHCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:02.963715Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.07437","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17a26a50e0e0c1f6a2a62203b32d6e725429161d3e8d18a50b5e2eaa459057ad","sha256:aab758ea02acc44fa7df81738566817f3ba78a01c257ef5064ab6a44aca603c1"],"state_sha256":"346d85e69e5d1f798bbc147a33c7d444f579a9bce80cacc59d3853b6d27cacf6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CEzAZfepZ8a2OrKKihYkRkS4p2evJHUPBT61JDMVJdSNOmA9HzlMlN0fPURVo+8cHfhKrE1ljJJwpcih/wqQCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T14:10:09.751287Z","bundle_sha256":"aeb1aaa0786aed2fef52d0e6b3dcb1e7ef229b3d9a3c6dcd0da3bcaea3a1beac"}}