{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:JPW4SF34PGMZXVNTTOB5F5IXI5","short_pith_number":"pith:JPW4SF34","canonical_record":{"source":{"id":"1008.2304","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-13T12:25:39Z","cross_cats_sorted":[],"title_canon_sha256":"3ffbdc1998bf86180c5b9d2d1ba4d16d3eb5f206cbda315cac5778670aa839d3","abstract_canon_sha256":"97f6957b1c743aa9d0d8c0628421017095836edd554a9fa8a1da42d7f6383737"},"schema_version":"1.0"},"canonical_sha256":"4bedc9177c79999bd5b39b83d2f517474f1457b4b9b7dfa684e03132583b64ca","source":{"kind":"arxiv","id":"1008.2304","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2304","created_at":"2026-05-18T02:05:48Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2304v1","created_at":"2026-05-18T02:05:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2304","created_at":"2026-05-18T02:05:48Z"},{"alias_kind":"pith_short_12","alias_value":"JPW4SF34PGMZ","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"JPW4SF34PGMZXVNT","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"JPW4SF34","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:JPW4SF34PGMZXVNTTOB5F5IXI5","target":"record","payload":{"canonical_record":{"source":{"id":"1008.2304","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-13T12:25:39Z","cross_cats_sorted":[],"title_canon_sha256":"3ffbdc1998bf86180c5b9d2d1ba4d16d3eb5f206cbda315cac5778670aa839d3","abstract_canon_sha256":"97f6957b1c743aa9d0d8c0628421017095836edd554a9fa8a1da42d7f6383737"},"schema_version":"1.0"},"canonical_sha256":"4bedc9177c79999bd5b39b83d2f517474f1457b4b9b7dfa684e03132583b64ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:48.621189Z","signature_b64":"33nbMKZSJ6JyXrmNhsRW4y7UTRPNMEo+qtCiOjF3BiyRcGDIBL7YqGPkNbr7i1L2FyOam+DHV3vCqV/3n3/QBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4bedc9177c79999bd5b39b83d2f517474f1457b4b9b7dfa684e03132583b64ca","last_reissued_at":"2026-05-18T02:05:48.620542Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:48.620542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.2304","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":"2026-05-18T02:05:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uvh/6PJAJGi8YADJZnYOcGgsbxHs+ifxhv8xRlR5PfZrPrqbEkY1oY2t3G8i9KPtvuTpbM57KOXywqj+bmWBCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:43:35.819176Z"},"content_sha256":"bd67ebf7feee4794cbe43d05bc55c9a6435fbeb018cc121f281b1ca815848cae","schema_version":"1.0","event_id":"sha256:bd67ebf7feee4794cbe43d05bc55c9a6435fbeb018cc121f281b1ca815848cae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:JPW4SF34PGMZXVNTTOB5F5IXI5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High Resolution Spectroscopy during Eclipse of the Young Substellar Eclipsing Binary 2MASS 0535-0546. I. Primary Spectrum: Cool Spots versus Opacity Uncertainties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Greg W. Doppmann, Keivan G. Stassun, Subhanjoy Mohanty","submitted_at":"2010-08-13T12:25:39Z","abstract_excerpt":"We present high-resolution Keck optical spectra of the very young substellar eclipsing binary 2MASS J05352184-0546085, obtained during eclipse of the lower-mass (secondary) brown dwarf. The observations yield the spectrum of the higher-mass (primary) brown dwarf alone, with negligible (~1.6%) contamination by the secondary. We perform a simultaneous fine-analysis of the TiO-epsilon band and the red lobe of the KI doublet, using state-of-the-art PHOENIX Dusty and Cond synthetic spectra. Comparing the effective temperature and surface gravity derived from these fits to the {\\it empirically} dete"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2304","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":"2026-05-18T02:05:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GuACQUOuV73HOjyKs9AxjBzlBf6/fo6qMUTucUm9ZzNEzyRs+v5Be87TcIZmGOvJmXD8fWGTO3adPCBjtrcQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:43:35.819526Z"},"content_sha256":"4d24bca4543df2616cfbb8164f82b13d6e77051ee357b9bfa489368c01031b43","schema_version":"1.0","event_id":"sha256:4d24bca4543df2616cfbb8164f82b13d6e77051ee357b9bfa489368c01031b43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JPW4SF34PGMZXVNTTOB5F5IXI5/bundle.json","state_url":"https://pith.science/pith/JPW4SF34PGMZXVNTTOB5F5IXI5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JPW4SF34PGMZXVNTTOB5F5IXI5/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":"2026-06-03T19:43:35Z","links":{"resolver":"https://pith.science/pith/JPW4SF34PGMZXVNTTOB5F5IXI5","bundle":"https://pith.science/pith/JPW4SF34PGMZXVNTTOB5F5IXI5/bundle.json","state":"https://pith.science/pith/JPW4SF34PGMZXVNTTOB5F5IXI5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JPW4SF34PGMZXVNTTOB5F5IXI5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:JPW4SF34PGMZXVNTTOB5F5IXI5","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":"97f6957b1c743aa9d0d8c0628421017095836edd554a9fa8a1da42d7f6383737","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-13T12:25:39Z","title_canon_sha256":"3ffbdc1998bf86180c5b9d2d1ba4d16d3eb5f206cbda315cac5778670aa839d3"},"schema_version":"1.0","source":{"id":"1008.2304","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2304","created_at":"2026-05-18T02:05:48Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2304v1","created_at":"2026-05-18T02:05:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2304","created_at":"2026-05-18T02:05:48Z"},{"alias_kind":"pith_short_12","alias_value":"JPW4SF34PGMZ","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"JPW4SF34PGMZXVNT","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"JPW4SF34","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:4d24bca4543df2616cfbb8164f82b13d6e77051ee357b9bfa489368c01031b43","target":"graph","created_at":"2026-05-18T02:05:48Z","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 high-resolution Keck optical spectra of the very young substellar eclipsing binary 2MASS J05352184-0546085, obtained during eclipse of the lower-mass (secondary) brown dwarf. The observations yield the spectrum of the higher-mass (primary) brown dwarf alone, with negligible (~1.6%) contamination by the secondary. We perform a simultaneous fine-analysis of the TiO-epsilon band and the red lobe of the KI doublet, using state-of-the-art PHOENIX Dusty and Cond synthetic spectra. Comparing the effective temperature and surface gravity derived from these fits to the {\\it empirically} dete","authors_text":"Greg W. Doppmann, Keivan G. Stassun, Subhanjoy Mohanty","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-13T12:25:39Z","title":"High Resolution Spectroscopy during Eclipse of the Young Substellar Eclipsing Binary 2MASS 0535-0546. I. Primary Spectrum: Cool Spots versus Opacity Uncertainties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2304","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:bd67ebf7feee4794cbe43d05bc55c9a6435fbeb018cc121f281b1ca815848cae","target":"record","created_at":"2026-05-18T02:05:48Z","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":"97f6957b1c743aa9d0d8c0628421017095836edd554a9fa8a1da42d7f6383737","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-13T12:25:39Z","title_canon_sha256":"3ffbdc1998bf86180c5b9d2d1ba4d16d3eb5f206cbda315cac5778670aa839d3"},"schema_version":"1.0","source":{"id":"1008.2304","kind":"arxiv","version":1}},"canonical_sha256":"4bedc9177c79999bd5b39b83d2f517474f1457b4b9b7dfa684e03132583b64ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4bedc9177c79999bd5b39b83d2f517474f1457b4b9b7dfa684e03132583b64ca","first_computed_at":"2026-05-18T02:05:48.620542Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:48.620542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"33nbMKZSJ6JyXrmNhsRW4y7UTRPNMEo+qtCiOjF3BiyRcGDIBL7YqGPkNbr7i1L2FyOam+DHV3vCqV/3n3/QBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:48.621189Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.2304","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd67ebf7feee4794cbe43d05bc55c9a6435fbeb018cc121f281b1ca815848cae","sha256:4d24bca4543df2616cfbb8164f82b13d6e77051ee357b9bfa489368c01031b43"],"state_sha256":"aacb8a178f0133ec934753f5fd6037cda19703a63221bead5c8fe02155310d65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KWsy5iciInJjwCVyvVi4Wf6xByaBzsNmANWFJmZMyqvPLndjHK3mv8VDzasqwsj6AAs1+2pnrk1ckZJm4pf2Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T19:43:35.821407Z","bundle_sha256":"f8c1aae1827c5c6d3cf9c486609a542a6ad67e2a5f81d47b2373f451fdbc8562"}}