{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:YDXUZYBAGFESV35HM2VMIL5EVI","short_pith_number":"pith:YDXUZYBA","canonical_record":{"source":{"id":"1205.6803","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-30T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"e91392668e45af5514beb4d9a3c1d3d127fe56ccb0436d2f392db85011ea110d","abstract_canon_sha256":"48e891fc1533de15a2d80a803b088029c4c5f4ca7e9967e2f9301ca7548b33fd"},"schema_version":"1.0"},"canonical_sha256":"c0ef4ce02031492aefa766aac42fa4aa3e2c6a25155f703e1d5c61b11c212760","source":{"kind":"arxiv","id":"1205.6803","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.6803","created_at":"2026-05-18T01:57:09Z"},{"alias_kind":"arxiv_version","alias_value":"1205.6803v1","created_at":"2026-05-18T01:57:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.6803","created_at":"2026-05-18T01:57:09Z"},{"alias_kind":"pith_short_12","alias_value":"YDXUZYBAGFES","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YDXUZYBAGFESV35H","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YDXUZYBA","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:YDXUZYBAGFESV35HM2VMIL5EVI","target":"record","payload":{"canonical_record":{"source":{"id":"1205.6803","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-30T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"e91392668e45af5514beb4d9a3c1d3d127fe56ccb0436d2f392db85011ea110d","abstract_canon_sha256":"48e891fc1533de15a2d80a803b088029c4c5f4ca7e9967e2f9301ca7548b33fd"},"schema_version":"1.0"},"canonical_sha256":"c0ef4ce02031492aefa766aac42fa4aa3e2c6a25155f703e1d5c61b11c212760","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:09.779935Z","signature_b64":"qUyImIqpNNrs3iOKfA7pMoObgZXo9EQVshBb7PdeyPT3PmS0dO6BdfRkcsXgABwySSUq+yE+Xe+jMG88I23RBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c0ef4ce02031492aefa766aac42fa4aa3e2c6a25155f703e1d5c61b11c212760","last_reissued_at":"2026-05-18T01:57:09.779431Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:09.779431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.6803","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":"2026-05-18T01:57:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8lSY5JJzsWCCVxgtyMm0RdyF3MyRc3935lR/Nct5qOSKQ8ZsauNt2S8J7bOWpgUUhSKhgDyQr9NOht1yy/dZDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:02:56.173498Z"},"content_sha256":"5633355ab8289d475c5e06b13ae449bbf2c09827bac21824a7ef51db71c54639","schema_version":"1.0","event_id":"sha256:5633355ab8289d475c5e06b13ae449bbf2c09827bac21824a7ef51db71c54639"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:YDXUZYBAGFESV35HM2VMIL5EVI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Unseen Population of F to K-type Companions to Hot Subdwarf Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. T. G\\\"ansicke, C. M. Copperwheat, D. Steeghs, E. Breedt, J. Girven, P. Longa Pe\\~na, S. Pyrzas, T. R. Marsh, U. Heber","submitted_at":"2012-05-30T20:00:01Z","abstract_excerpt":"We present a method to select hot subdwarf stars with A to M-type companions using photometric selection criteria. We cover a wide range in wavelength by combining GALEX ultraviolet data, optical photometry from the SDSS and the Carlsberg Meridian telescope, near-infrared data from 2MASS and UKIDSS. We construct two complimentary samples, one by matching GALEX, CMC and 2MASS, as well as a smaller, but deeper, sample using GALEX, SDSS and UKIDSS. In both cases, a large number of composite subdwarf plus main-sequence star candidates were found. We fit their spectral energy distributions with a c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.6803","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":"2026-05-18T01:57:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Knp1zytTNArbDfHZw96kSxd7N8tDDjYB0veifuwjdhFaner+ocJ6ti06P39EADwCoJbO3qJ4W/2LE3dxw4KbAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:02:56.174168Z"},"content_sha256":"0df8793ea783452cabd2564824c15ccaa91521d6331297c4d8ea8b86317cb05f","schema_version":"1.0","event_id":"sha256:0df8793ea783452cabd2564824c15ccaa91521d6331297c4d8ea8b86317cb05f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YDXUZYBAGFESV35HM2VMIL5EVI/bundle.json","state_url":"https://pith.science/pith/YDXUZYBAGFESV35HM2VMIL5EVI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YDXUZYBAGFESV35HM2VMIL5EVI/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":"2026-05-27T14:02:56Z","links":{"resolver":"https://pith.science/pith/YDXUZYBAGFESV35HM2VMIL5EVI","bundle":"https://pith.science/pith/YDXUZYBAGFESV35HM2VMIL5EVI/bundle.json","state":"https://pith.science/pith/YDXUZYBAGFESV35HM2VMIL5EVI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YDXUZYBAGFESV35HM2VMIL5EVI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YDXUZYBAGFESV35HM2VMIL5EVI","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":"48e891fc1533de15a2d80a803b088029c4c5f4ca7e9967e2f9301ca7548b33fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-30T20:00:01Z","title_canon_sha256":"e91392668e45af5514beb4d9a3c1d3d127fe56ccb0436d2f392db85011ea110d"},"schema_version":"1.0","source":{"id":"1205.6803","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.6803","created_at":"2026-05-18T01:57:09Z"},{"alias_kind":"arxiv_version","alias_value":"1205.6803v1","created_at":"2026-05-18T01:57:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.6803","created_at":"2026-05-18T01:57:09Z"},{"alias_kind":"pith_short_12","alias_value":"YDXUZYBAGFES","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YDXUZYBAGFESV35H","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YDXUZYBA","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:0df8793ea783452cabd2564824c15ccaa91521d6331297c4d8ea8b86317cb05f","target":"graph","created_at":"2026-05-18T01:57:09Z","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 present a method to select hot subdwarf stars with A to M-type companions using photometric selection criteria. We cover a wide range in wavelength by combining GALEX ultraviolet data, optical photometry from the SDSS and the Carlsberg Meridian telescope, near-infrared data from 2MASS and UKIDSS. We construct two complimentary samples, one by matching GALEX, CMC and 2MASS, as well as a smaller, but deeper, sample using GALEX, SDSS and UKIDSS. In both cases, a large number of composite subdwarf plus main-sequence star candidates were found. We fit their spectral energy distributions with a c","authors_text":"B. T. G\\\"ansicke, C. M. Copperwheat, D. Steeghs, E. Breedt, J. Girven, P. Longa Pe\\~na, S. Pyrzas, T. R. Marsh, U. Heber","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-30T20:00:01Z","title":"The Unseen Population of F to K-type Companions to Hot Subdwarf Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.6803","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":"sha256:5633355ab8289d475c5e06b13ae449bbf2c09827bac21824a7ef51db71c54639","target":"record","created_at":"2026-05-18T01:57:09Z","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":"48e891fc1533de15a2d80a803b088029c4c5f4ca7e9967e2f9301ca7548b33fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-30T20:00:01Z","title_canon_sha256":"e91392668e45af5514beb4d9a3c1d3d127fe56ccb0436d2f392db85011ea110d"},"schema_version":"1.0","source":{"id":"1205.6803","kind":"arxiv","version":1}},"canonical_sha256":"c0ef4ce02031492aefa766aac42fa4aa3e2c6a25155f703e1d5c61b11c212760","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c0ef4ce02031492aefa766aac42fa4aa3e2c6a25155f703e1d5c61b11c212760","first_computed_at":"2026-05-18T01:57:09.779431Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:09.779431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qUyImIqpNNrs3iOKfA7pMoObgZXo9EQVshBb7PdeyPT3PmS0dO6BdfRkcsXgABwySSUq+yE+Xe+jMG88I23RBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:09.779935Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.6803","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5633355ab8289d475c5e06b13ae449bbf2c09827bac21824a7ef51db71c54639","sha256:0df8793ea783452cabd2564824c15ccaa91521d6331297c4d8ea8b86317cb05f"],"state_sha256":"2da177f9feaf592d36ac08d9e4fa532beeac875c4efc441256acdc32b67fb6b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FwraAcpTP7nQpYz9SHLLbqBtCG/QFg61EVgz0FUVip5AcfyZxgirpFIQ4ujm6E7DM9Jhd9pSO0hadBt2xAwzCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:02:56.176748Z","bundle_sha256":"1e5741d5dda5c0b9110f27f271fcdb45f2d89898325b42cbd4ce41396dcabd02"}}