{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MJS7J54PDDKUUI2LH4QFOCYMST","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":"e33f25b176806602ac7376a7704ed10a3f8f2f98b11a33ef23b8a1e658c24b0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T02:42:52Z","title_canon_sha256":"aff86d73d5862daa7b2e9a1c2fe0ca54a08c7229cdfdfa28d79a703c0f9d20a5"},"schema_version":"1.0","source":{"id":"1307.2657","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2657","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2657v1","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2657","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"pith_short_12","alias_value":"MJS7J54PDDKU","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MJS7J54PDDKUUI2L","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MJS7J54P","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:42c858e672f0e4813bb80d2507fb00f583d917f87916df96fee53a17e75cc398","target":"graph","created_at":"2026-05-18T01:48:52Z","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 an analysis of the intrinsic colors and temperatures of 5-30 Myr old pre-main sequence (pre-MS) stars using the F0 through M9 type members of nearby, negligibly reddened groups: Eta Cha cluster, TW Hydra Association, Beta Pic Moving Group, and Tucana-Horologium Association. To check the consistency of spectral types from the literature, we estimate new spectral types for 52 nearby pre-MS stars with spectral types F3 through M4 using optical spectra taken with the SMARTS 1.5-m telescope. Combining these new types with published spectral types, and photometry from the literature (John","authors_text":"Eric E. Mamajek, Mark J. Pecaut","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T02:42:52Z","title":"Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2657","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":"sha256:1e572a1ce67054f7fd6c6bb538c18a44dd87cbed18d5b4d6c4a2a45529bf1345","target":"record","created_at":"2026-05-18T01:48:52Z","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":"e33f25b176806602ac7376a7704ed10a3f8f2f98b11a33ef23b8a1e658c24b0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T02:42:52Z","title_canon_sha256":"aff86d73d5862daa7b2e9a1c2fe0ca54a08c7229cdfdfa28d79a703c0f9d20a5"},"schema_version":"1.0","source":{"id":"1307.2657","kind":"arxiv","version":1}},"canonical_sha256":"6265f4f78f18d54a234b3f20570b0c94ca7f23d0a4450dc79295b31e364a9157","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6265f4f78f18d54a234b3f20570b0c94ca7f23d0a4450dc79295b31e364a9157","first_computed_at":"2026-05-18T01:48:52.510496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:52.510496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AITC+Au0UtnA5hj3RuWN581JR6PlJeVaV2SWTGbN5FlzgtgO3tclu4jMz5Y0NQoqo1ykJAt7z6jCdOz9ptKUDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:52.511208Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.2657","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e572a1ce67054f7fd6c6bb538c18a44dd87cbed18d5b4d6c4a2a45529bf1345","sha256:42c858e672f0e4813bb80d2507fb00f583d917f87916df96fee53a17e75cc398"],"state_sha256":"6fcdfee9250ebfa8b0538afa5ae89047d512a1d070ede94fc57ec302859f63ed"}