{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:Y5XTEOZ5HBEXFCTLSAW3UYLREM","short_pith_number":"pith:Y5XTEOZ5","canonical_record":{"source":{"id":"1202.6293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-28T17:25:41Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"122dae015c3104c24b52228be1f0446eb56fed035f54615054e464522453e88a","abstract_canon_sha256":"1515406d8fd5aac041664596a9c164261dda3c8b482f480fffc0338105d30bb8"},"schema_version":"1.0"},"canonical_sha256":"c76f323b3d3849728a6b902dba6171232d26d1e3b30ebd92022b4b58b22fd9c9","source":{"kind":"arxiv","id":"1202.6293","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.6293","created_at":"2026-05-18T01:58:18Z"},{"alias_kind":"arxiv_version","alias_value":"1202.6293v1","created_at":"2026-05-18T01:58:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.6293","created_at":"2026-05-18T01:58:18Z"},{"alias_kind":"pith_short_12","alias_value":"Y5XTEOZ5HBEX","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"Y5XTEOZ5HBEXFCTL","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"Y5XTEOZ5","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:Y5XTEOZ5HBEXFCTLSAW3UYLREM","target":"record","payload":{"canonical_record":{"source":{"id":"1202.6293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-28T17:25:41Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"122dae015c3104c24b52228be1f0446eb56fed035f54615054e464522453e88a","abstract_canon_sha256":"1515406d8fd5aac041664596a9c164261dda3c8b482f480fffc0338105d30bb8"},"schema_version":"1.0"},"canonical_sha256":"c76f323b3d3849728a6b902dba6171232d26d1e3b30ebd92022b4b58b22fd9c9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:18.664744Z","signature_b64":"Vuz660rzgh3REeDOlMarDcw2Ui43zXXDS9fc7hUyxRkHltKR5uBOfTuXCWb+Vnrp3DGXF2W8KVrZ275aBxHIAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c76f323b3d3849728a6b902dba6171232d26d1e3b30ebd92022b4b58b22fd9c9","last_reissued_at":"2026-05-18T01:58:18.664170Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:18.664170Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.6293","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":"2026-05-18T01:58:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6OpkynMEi8FDvIsQM76qxe72vQeECZT9mFYitJeX0XgqNB6EyRvR/VGO6lSPzrrgy5YwGjXV1UWoPy2dCxLuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:16:15.419751Z"},"content_sha256":"d97dba29e7f06eb97f9206e997a4871656ad1752132a5783cbf42cd62f8ee1a1","schema_version":"1.0","event_id":"sha256:d97dba29e7f06eb97f9206e997a4871656ad1752132a5783cbf42cd62f8ee1a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:Y5XTEOZ5HBEXFCTLSAW3UYLREM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New H2 collision-induced absorption and NH3 opacity and the spectra of the coolest brown dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"D. Saumon, L. Frommhold, M. Abel, M. S. Marley, R. S. Freedman","submitted_at":"2012-02-28T17:25:41Z","abstract_excerpt":"We present new cloudy and cloudless model atmospheres for brown dwarfs using recent ab initio calculations of the line list of ammonia (NH3) and of the collision-induced absorption of molecular hydrogen (H2). We compare the new synthetic spectra with models based on an earlier description of the H2 and NH3 opacities. We find a significant improvement in fitting the nearly complete spectral energy distribution of the T7p dwarf Gliese 570D and in near infrared color-magnitude diagrams of field brown dwarfs. We apply these new models to the identification of NH3 absorption in the H band peak of v"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.6293","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":"2026-05-18T01:58:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OJ510RBYoFR6zt7gJITfKxZaBhVYpQYQCRKH1TQjgSr2DS7C7P2XGaRrkHl7oi/ar9+QWMeUqWWrHJpUZqHkDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:16:15.420472Z"},"content_sha256":"c046587a1d0d9221f60b3dcf71472f0246a2a3d8cf23cbb9028cd37387b76256","schema_version":"1.0","event_id":"sha256:c046587a1d0d9221f60b3dcf71472f0246a2a3d8cf23cbb9028cd37387b76256"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y5XTEOZ5HBEXFCTLSAW3UYLREM/bundle.json","state_url":"https://pith.science/pith/Y5XTEOZ5HBEXFCTLSAW3UYLREM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y5XTEOZ5HBEXFCTLSAW3UYLREM/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":"2026-05-25T22:16:15Z","links":{"resolver":"https://pith.science/pith/Y5XTEOZ5HBEXFCTLSAW3UYLREM","bundle":"https://pith.science/pith/Y5XTEOZ5HBEXFCTLSAW3UYLREM/bundle.json","state":"https://pith.science/pith/Y5XTEOZ5HBEXFCTLSAW3UYLREM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y5XTEOZ5HBEXFCTLSAW3UYLREM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:Y5XTEOZ5HBEXFCTLSAW3UYLREM","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":"1515406d8fd5aac041664596a9c164261dda3c8b482f480fffc0338105d30bb8","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-28T17:25:41Z","title_canon_sha256":"122dae015c3104c24b52228be1f0446eb56fed035f54615054e464522453e88a"},"schema_version":"1.0","source":{"id":"1202.6293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.6293","created_at":"2026-05-18T01:58:18Z"},{"alias_kind":"arxiv_version","alias_value":"1202.6293v1","created_at":"2026-05-18T01:58:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.6293","created_at":"2026-05-18T01:58:18Z"},{"alias_kind":"pith_short_12","alias_value":"Y5XTEOZ5HBEX","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"Y5XTEOZ5HBEXFCTL","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"Y5XTEOZ5","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:c046587a1d0d9221f60b3dcf71472f0246a2a3d8cf23cbb9028cd37387b76256","target":"graph","created_at":"2026-05-18T01:58:18Z","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 new cloudy and cloudless model atmospheres for brown dwarfs using recent ab initio calculations of the line list of ammonia (NH3) and of the collision-induced absorption of molecular hydrogen (H2). We compare the new synthetic spectra with models based on an earlier description of the H2 and NH3 opacities. We find a significant improvement in fitting the nearly complete spectral energy distribution of the T7p dwarf Gliese 570D and in near infrared color-magnitude diagrams of field brown dwarfs. We apply these new models to the identification of NH3 absorption in the H band peak of v","authors_text":"D. Saumon, L. Frommhold, M. Abel, M. S. Marley, R. S. Freedman","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-28T17:25:41Z","title":"New H2 collision-induced absorption and NH3 opacity and the spectra of the coolest brown dwarfs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.6293","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:d97dba29e7f06eb97f9206e997a4871656ad1752132a5783cbf42cd62f8ee1a1","target":"record","created_at":"2026-05-18T01:58:18Z","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":"1515406d8fd5aac041664596a9c164261dda3c8b482f480fffc0338105d30bb8","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-28T17:25:41Z","title_canon_sha256":"122dae015c3104c24b52228be1f0446eb56fed035f54615054e464522453e88a"},"schema_version":"1.0","source":{"id":"1202.6293","kind":"arxiv","version":1}},"canonical_sha256":"c76f323b3d3849728a6b902dba6171232d26d1e3b30ebd92022b4b58b22fd9c9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c76f323b3d3849728a6b902dba6171232d26d1e3b30ebd92022b4b58b22fd9c9","first_computed_at":"2026-05-18T01:58:18.664170Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:18.664170Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vuz660rzgh3REeDOlMarDcw2Ui43zXXDS9fc7hUyxRkHltKR5uBOfTuXCWb+Vnrp3DGXF2W8KVrZ275aBxHIAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:18.664744Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.6293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d97dba29e7f06eb97f9206e997a4871656ad1752132a5783cbf42cd62f8ee1a1","sha256:c046587a1d0d9221f60b3dcf71472f0246a2a3d8cf23cbb9028cd37387b76256"],"state_sha256":"10cf35227dacdb83952b74e451a198e1a3daec6a0ae1c6b43b2a5223f5c82cba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YdQUh2NM/38RMTO//4REz6NFE0bLe9lRuAuHgSN9B9Wj6U1UkKxJNxjadsC+/lSi7bJLRrES0rtzrRWPdoDuCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:16:15.424613Z","bundle_sha256":"394d116ed2da9929885dbaa8a1d59cdedbd8ccbf65383dca28c6e1c52bcf7447"}}