{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:4I7ARAPF7CDSCIXHDID23SFC7U","short_pith_number":"pith:4I7ARAPF","canonical_record":{"source":{"id":"0805.4772","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-30T14:28:49Z","cross_cats_sorted":[],"title_canon_sha256":"a567e5c23e581d42fadf4d81963e7e67684e82e1eac8ab7f9516b8aa6c41b5f4","abstract_canon_sha256":"ff4f5893a503099d77bb53833859c17bbc6c82502d80dba52e79d4ef897c541e"},"schema_version":"1.0"},"canonical_sha256":"e23e0881e5f8872122e71a07adc8a2fd0098ddcdb0f97c8294e8204aa1ae52e0","source":{"kind":"arxiv","id":"0805.4772","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.4772","created_at":"2026-05-18T04:26:45Z"},{"alias_kind":"arxiv_version","alias_value":"0805.4772v2","created_at":"2026-05-18T04:26:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.4772","created_at":"2026-05-18T04:26:45Z"},{"alias_kind":"pith_short_12","alias_value":"4I7ARAPF7CDS","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"4I7ARAPF7CDSCIXH","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"4I7ARAPF","created_at":"2026-05-18T12:25:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:4I7ARAPF7CDSCIXHDID23SFC7U","target":"record","payload":{"canonical_record":{"source":{"id":"0805.4772","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-30T14:28:49Z","cross_cats_sorted":[],"title_canon_sha256":"a567e5c23e581d42fadf4d81963e7e67684e82e1eac8ab7f9516b8aa6c41b5f4","abstract_canon_sha256":"ff4f5893a503099d77bb53833859c17bbc6c82502d80dba52e79d4ef897c541e"},"schema_version":"1.0"},"canonical_sha256":"e23e0881e5f8872122e71a07adc8a2fd0098ddcdb0f97c8294e8204aa1ae52e0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:26:45.990543Z","signature_b64":"pKI8XD3/VhC2ihfYYdTFjEk6Gxj9xE9A/H6UMHOZGJopthcleciLiLlCZ54Ypr/X013dO9MlcbkzjfTstKmXBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e23e0881e5f8872122e71a07adc8a2fd0098ddcdb0f97c8294e8204aa1ae52e0","last_reissued_at":"2026-05-18T04:26:45.989917Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:26:45.989917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0805.4772","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:26:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q7hszK6k7w+fIr4TDJU6QNcw3cnBlalQSaHZFIZAz/NjKIFWS7cVLpA2L0OA3+yO8GllSzdAdDZaO9mipTBKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T14:21:17.467691Z"},"content_sha256":"df18b32414f3f2ed1f13fae94707e9841124008140dc8444d1b4c2febd6a151e","schema_version":"1.0","event_id":"sha256:df18b32414f3f2ed1f13fae94707e9841124008140dc8444d1b4c2febd6a151e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:4I7ARAPF7CDSCIXHDID23SFC7U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A search for southern ultracool dwarfs in young moving groups","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. C. Day-Jones, B. Burningham, D. J. Pinfield, H. R. A. Jones, J. R. A. Clarke, J. R. Barnes, J. S. Jenkins, M. C. Galvez-Ortiz, N. R. Deacon, R. S. Pokorny","submitted_at":"2008-05-30T14:28:49Z","abstract_excerpt":"We associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups using photometric and astrometric selection techniques. Of these objects, we present high resolution spectroscopy for seven candidates and combine these with previous measurements from the literature to determine spectral types and radial velocities. We thus constrain distance and space motion spectroscopically, allowing the kinematic membership of the moving groups to be assessed. Possible membership of moving groups has allowed ages and metallicities to be constrained for these ob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.4772","kind":"arxiv","version":2},"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":"2026-05-18T04:26:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RE5J+DpbEXEerM1FHLMcwuVNu+dMh/1+ut7ZoxDwpaO4zRZHTx+GpGq/0eCmxN1i0emdsIAAbWVPbK+0Itz/Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T14:21:17.468417Z"},"content_sha256":"a1c39f8dfe212c84d9fc699936073aa616289c208a9c8506eeda079b4034a7ec","schema_version":"1.0","event_id":"sha256:a1c39f8dfe212c84d9fc699936073aa616289c208a9c8506eeda079b4034a7ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4I7ARAPF7CDSCIXHDID23SFC7U/bundle.json","state_url":"https://pith.science/pith/4I7ARAPF7CDSCIXHDID23SFC7U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4I7ARAPF7CDSCIXHDID23SFC7U/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":"2026-05-25T14:21:17Z","links":{"resolver":"https://pith.science/pith/4I7ARAPF7CDSCIXHDID23SFC7U","bundle":"https://pith.science/pith/4I7ARAPF7CDSCIXHDID23SFC7U/bundle.json","state":"https://pith.science/pith/4I7ARAPF7CDSCIXHDID23SFC7U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4I7ARAPF7CDSCIXHDID23SFC7U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:4I7ARAPF7CDSCIXHDID23SFC7U","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":"ff4f5893a503099d77bb53833859c17bbc6c82502d80dba52e79d4ef897c541e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-30T14:28:49Z","title_canon_sha256":"a567e5c23e581d42fadf4d81963e7e67684e82e1eac8ab7f9516b8aa6c41b5f4"},"schema_version":"1.0","source":{"id":"0805.4772","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.4772","created_at":"2026-05-18T04:26:45Z"},{"alias_kind":"arxiv_version","alias_value":"0805.4772v2","created_at":"2026-05-18T04:26:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.4772","created_at":"2026-05-18T04:26:45Z"},{"alias_kind":"pith_short_12","alias_value":"4I7ARAPF7CDS","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"4I7ARAPF7CDSCIXH","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"4I7ARAPF","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:a1c39f8dfe212c84d9fc699936073aa616289c208a9c8506eeda079b4034a7ec","target":"graph","created_at":"2026-05-18T04:26:45Z","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 associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups using photometric and astrometric selection techniques. Of these objects, we present high resolution spectroscopy for seven candidates and combine these with previous measurements from the literature to determine spectral types and radial velocities. We thus constrain distance and space motion spectroscopically, allowing the kinematic membership of the moving groups to be assessed. Possible membership of moving groups has allowed ages and metallicities to be constrained for these ob","authors_text":"A. C. Day-Jones, B. Burningham, D. J. Pinfield, H. R. A. Jones, J. R. A. Clarke, J. R. Barnes, J. S. Jenkins, M. C. Galvez-Ortiz, N. R. Deacon, R. S. Pokorny","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-30T14:28:49Z","title":"A search for southern ultracool dwarfs in young moving groups"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.4772","kind":"arxiv","version":2},"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:df18b32414f3f2ed1f13fae94707e9841124008140dc8444d1b4c2febd6a151e","target":"record","created_at":"2026-05-18T04:26:45Z","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":"ff4f5893a503099d77bb53833859c17bbc6c82502d80dba52e79d4ef897c541e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-30T14:28:49Z","title_canon_sha256":"a567e5c23e581d42fadf4d81963e7e67684e82e1eac8ab7f9516b8aa6c41b5f4"},"schema_version":"1.0","source":{"id":"0805.4772","kind":"arxiv","version":2}},"canonical_sha256":"e23e0881e5f8872122e71a07adc8a2fd0098ddcdb0f97c8294e8204aa1ae52e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e23e0881e5f8872122e71a07adc8a2fd0098ddcdb0f97c8294e8204aa1ae52e0","first_computed_at":"2026-05-18T04:26:45.989917Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:26:45.989917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pKI8XD3/VhC2ihfYYdTFjEk6Gxj9xE9A/H6UMHOZGJopthcleciLiLlCZ54Ypr/X013dO9MlcbkzjfTstKmXBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:26:45.990543Z","signed_message":"canonical_sha256_bytes"},"source_id":"0805.4772","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df18b32414f3f2ed1f13fae94707e9841124008140dc8444d1b4c2febd6a151e","sha256:a1c39f8dfe212c84d9fc699936073aa616289c208a9c8506eeda079b4034a7ec"],"state_sha256":"a1a830b183f1f54238030fcddfa67605112701178bca1ea4e18b2ed8885042e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+YZ8B+U+QRZt9PvsMYsPrMrvPBmO/MxHXp4jl9bs2opu4D0AjfFIQVObGLgdOCJF3tKohas8Iat78qJ481ciCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T14:21:17.472053Z","bundle_sha256":"3dcb83f24471e33dc633b10252e1fedfa78c38cb17ef6062432461161a466c92"}}