{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:YS3NTCB2572QQLUDO5SYP5MIEM","short_pith_number":"pith:YS3NTCB2","canonical_record":{"source":{"id":"0711.0506","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-11-04T10:24:58Z","cross_cats_sorted":[],"title_canon_sha256":"62773b3dd0528e1225ff58cb142683c06acefd357e4982726fca4ede3397af93","abstract_canon_sha256":"91a82498679201382b5f403214f47b8c7148e5c0c3ae8f3c92616517f7a51377"},"schema_version":"1.0"},"canonical_sha256":"c4b6d9883aeff5082e83776587f588231a8544d180a6b2379bf14022d1251499","source":{"kind":"arxiv","id":"0711.0506","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.0506","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"arxiv_version","alias_value":"0711.0506v1","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.0506","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"pith_short_12","alias_value":"YS3NTCB2572Q","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"pith_short_16","alias_value":"YS3NTCB2572QQLUD","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"pith_short_8","alias_value":"YS3NTCB2","created_at":"2026-07-04T15:05:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:YS3NTCB2572QQLUDO5SYP5MIEM","target":"record","payload":{"canonical_record":{"source":{"id":"0711.0506","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-11-04T10:24:58Z","cross_cats_sorted":[],"title_canon_sha256":"62773b3dd0528e1225ff58cb142683c06acefd357e4982726fca4ede3397af93","abstract_canon_sha256":"91a82498679201382b5f403214f47b8c7148e5c0c3ae8f3c92616517f7a51377"},"schema_version":"1.0"},"canonical_sha256":"c4b6d9883aeff5082e83776587f588231a8544d180a6b2379bf14022d1251499","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:05:24.036062Z","signature_b64":"IgUUFN8M9wst++E6X3ZPeZpMCHxEUqxezBtdjuWhwbgXBZbIF0A+MtSlM+2i4bg3BMcOYgj+1OlFd678Y62PAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4b6d9883aeff5082e83776587f588231a8544d180a6b2379bf14022d1251499","last_reissued_at":"2026-07-04T15:05:24.035598Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:05:24.035598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0711.0506","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":"2026-07-04T15:05:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NReGPv8KBn4CCZxLFOgOBTsI34r9IWOiDkbJRkYJu4abWptRZmOaK6z7Ljvi63kvHiDADAq6obVET6DFTmOMDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:41:57.460052Z"},"content_sha256":"a061333599cbaf8a46e34ad6ed60827a235af12a8484dda0dabad96e87e18a11","schema_version":"1.0","event_id":"sha256:a061333599cbaf8a46e34ad6ed60827a235af12a8484dda0dabad96e87e18a11"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:YS3NTCB2572QQLUDO5SYP5MIEM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Binaries among Extreme Horizontal Branch Stars in Globular Clusters","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Moni Bidin, G. Piotto, M. Altmann, M. Catelan, S. Moehler, S. Villanova, Y. Momany","submitted_at":"2007-11-04T10:24:58Z","abstract_excerpt":"Following a review of our present knowledge about blue subdwarf stars in globular clusters, we present an overview of the results of searches for close binaries among these stars, including results previously published in the literature and reporting recent and preliminary results of new data. Previous investigations revealed a lack of close systems in NGC 6752, which we confirm with new, more extensive observations. Our estimate of the close binary fraction in this cluster is only 4%. From a review of the relevant literature, there are indications that a low close binary fraction among extrem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.0506","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/0711.0506/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":"2026-07-04T15:05:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"39gimDHA6vVfoaaVv/9JGPjZYIRxfV6UvdDQPLPgYtVrh4kAB/o7Y4Xq6eXGAD1hcG8JeWf31nLTrz5Ie26QCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:41:57.460713Z"},"content_sha256":"01bf25173bccb3282497bdca290d9959832ecd8e4965f1a3761e7b97950edcac","schema_version":"1.0","event_id":"sha256:01bf25173bccb3282497bdca290d9959832ecd8e4965f1a3761e7b97950edcac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YS3NTCB2572QQLUDO5SYP5MIEM/bundle.json","state_url":"https://pith.science/pith/YS3NTCB2572QQLUDO5SYP5MIEM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YS3NTCB2572QQLUDO5SYP5MIEM/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":"2026-08-11T13:41:57Z","links":{"resolver":"https://pith.science/pith/YS3NTCB2572QQLUDO5SYP5MIEM","bundle":"https://pith.science/pith/YS3NTCB2572QQLUDO5SYP5MIEM/bundle.json","state":"https://pith.science/pith/YS3NTCB2572QQLUDO5SYP5MIEM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YS3NTCB2572QQLUDO5SYP5MIEM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:YS3NTCB2572QQLUDO5SYP5MIEM","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":"91a82498679201382b5f403214f47b8c7148e5c0c3ae8f3c92616517f7a51377","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-11-04T10:24:58Z","title_canon_sha256":"62773b3dd0528e1225ff58cb142683c06acefd357e4982726fca4ede3397af93"},"schema_version":"1.0","source":{"id":"0711.0506","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.0506","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"arxiv_version","alias_value":"0711.0506v1","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.0506","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"pith_short_12","alias_value":"YS3NTCB2572Q","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"pith_short_16","alias_value":"YS3NTCB2572QQLUD","created_at":"2026-07-04T15:05:24Z"},{"alias_kind":"pith_short_8","alias_value":"YS3NTCB2","created_at":"2026-07-04T15:05:24Z"}],"graph_snapshots":[{"event_id":"sha256:01bf25173bccb3282497bdca290d9959832ecd8e4965f1a3761e7b97950edcac","target":"graph","created_at":"2026-07-04T15:05:24Z","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/0711.0506/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Following a review of our present knowledge about blue subdwarf stars in globular clusters, we present an overview of the results of searches for close binaries among these stars, including results previously published in the literature and reporting recent and preliminary results of new data. Previous investigations revealed a lack of close systems in NGC 6752, which we confirm with new, more extensive observations. Our estimate of the close binary fraction in this cluster is only 4%. From a review of the relevant literature, there are indications that a low close binary fraction among extrem","authors_text":"C. Moni Bidin, G. Piotto, M. Altmann, M. Catelan, S. Moehler, S. Villanova, Y. Momany","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-11-04T10:24:58Z","title":"Binaries among Extreme Horizontal Branch Stars in Globular Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.0506","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:a061333599cbaf8a46e34ad6ed60827a235af12a8484dda0dabad96e87e18a11","target":"record","created_at":"2026-07-04T15:05:24Z","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":"91a82498679201382b5f403214f47b8c7148e5c0c3ae8f3c92616517f7a51377","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-11-04T10:24:58Z","title_canon_sha256":"62773b3dd0528e1225ff58cb142683c06acefd357e4982726fca4ede3397af93"},"schema_version":"1.0","source":{"id":"0711.0506","kind":"arxiv","version":1}},"canonical_sha256":"c4b6d9883aeff5082e83776587f588231a8544d180a6b2379bf14022d1251499","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4b6d9883aeff5082e83776587f588231a8544d180a6b2379bf14022d1251499","first_computed_at":"2026-07-04T15:05:24.035598Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:05:24.035598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IgUUFN8M9wst++E6X3ZPeZpMCHxEUqxezBtdjuWhwbgXBZbIF0A+MtSlM+2i4bg3BMcOYgj+1OlFd678Y62PAg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:05:24.036062Z","signed_message":"canonical_sha256_bytes"},"source_id":"0711.0506","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a061333599cbaf8a46e34ad6ed60827a235af12a8484dda0dabad96e87e18a11","sha256:01bf25173bccb3282497bdca290d9959832ecd8e4965f1a3761e7b97950edcac"],"state_sha256":"fb28bf9e2855ca50f961cceefc983425cc88f607a202402326f02500e222c36b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZQUrRLnIntpofzkQCwBBvd7XARUyYX3nyiQjREjVNThBUfuBNHjh4KrEKiK4+dg+CbmgLjSArBVvdPMHGzEtAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T13:41:57.466221Z","bundle_sha256":"fcebdb92098d9d54112f96a6fcaec65d4a8ec2b7cc3aaa72c1895844559d98af"}}