{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:ISSOG63OTNTWUXB7BD77FWMOOG","short_pith_number":"pith:ISSOG63O","canonical_record":{"source":{"id":"2007.02716","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-07-06T13:04:53Z","cross_cats_sorted":[],"title_canon_sha256":"dd5f8e138f2004085a0677f2e2819842952de49a0411b92a63fc88b83253e979","abstract_canon_sha256":"df16c866d36159f115c048044296f824384f51f56a3a24336cf164731c61ce7f"},"schema_version":"1.0"},"canonical_sha256":"44a4e37b6e9b676a5c3f08fff2d98e7185cf89d9a98ec680ced5d5966efb78bc","source":{"kind":"arxiv","id":"2007.02716","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.02716","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"arxiv_version","alias_value":"2007.02716v2","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.02716","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"pith_short_12","alias_value":"ISSOG63OTNTW","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"pith_short_16","alias_value":"ISSOG63OTNTWUXB7","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"pith_short_8","alias_value":"ISSOG63O","created_at":"2026-07-05T01:23:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:ISSOG63OTNTWUXB7BD77FWMOOG","target":"record","payload":{"canonical_record":{"source":{"id":"2007.02716","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-07-06T13:04:53Z","cross_cats_sorted":[],"title_canon_sha256":"dd5f8e138f2004085a0677f2e2819842952de49a0411b92a63fc88b83253e979","abstract_canon_sha256":"df16c866d36159f115c048044296f824384f51f56a3a24336cf164731c61ce7f"},"schema_version":"1.0"},"canonical_sha256":"44a4e37b6e9b676a5c3f08fff2d98e7185cf89d9a98ec680ced5d5966efb78bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:23:06.404881Z","signature_b64":"BLpYmuVHw+1iQwJMWSrZ81XFBnk4v43/E9qZdgSPSeboyLTOsxKOJPJlk9wjg/NygZPpkPm+m3/VRIy+Pq12AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"44a4e37b6e9b676a5c3f08fff2d98e7185cf89d9a98ec680ced5d5966efb78bc","last_reissued_at":"2026-07-05T01:23:06.404399Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:23:06.404399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.02716","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":"2026-07-05T01:23:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"twDQK9ov62xzBoBZyUI5l/trQ1aZe3j22v3/xuB+KYlx/au/MvorGLRRr9rdJThsf5jIzuRZa8t9mbZGQPwDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:54:47.131202Z"},"content_sha256":"32fd36d27487eee68ec0c4d2cc192463071b3756261140fd997d43cb66fc9e2b","schema_version":"1.0","event_id":"sha256:32fd36d27487eee68ec0c4d2cc192463071b3756261140fd997d43cb66fc9e2b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:ISSOG63OTNTWUXB7BD77FWMOOG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A temperature inversion with atomic iron in the ultra-hot dayside atmosphere of WASP-189b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Reiners, E. Pall\\'e, F. Yan, G. Chen, K. Molaverdikhani, L. Nortmann, M. Stangret, N. Casasayas-Barris, P. Molli\\`ere","submitted_at":"2020-07-06T13:04:53Z","abstract_excerpt":"Temperature inversion layers are predicted to be present in ultra-hot giant planet atmospheres. Although such inversion layers have recently been observed in several ultra-hot Jupiters, the chemical species responsible for creating the inversion remain unidentified. Here, we present observations of the thermal emission spectrum of an ultra-hot Jupiter, WASP-189b, at high spectral resolution using the HARPS-N spectrograph. Using the cross-correlation technique, we detect a strong Fe I signal. The detected Fe I spectral lines are found in emission, which is direct evidence of a temperature inver"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.02716","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2007.02716/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":"2026-07-05T01:23:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g/SSvB/4wbRDjEJcCEnVXJ+Bsaz1s8defNv957emlfHNnnBn+erq8rFaNLaUY5n2FnB2mc1XPHYDADBUE2YhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:54:47.131606Z"},"content_sha256":"6e8f6366c866a7b46b1ba68755394214382a6e32f88270c54a827c43f8c835ab","schema_version":"1.0","event_id":"sha256:6e8f6366c866a7b46b1ba68755394214382a6e32f88270c54a827c43f8c835ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ISSOG63OTNTWUXB7BD77FWMOOG/bundle.json","state_url":"https://pith.science/pith/ISSOG63OTNTWUXB7BD77FWMOOG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ISSOG63OTNTWUXB7BD77FWMOOG/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":"2026-07-07T11:54:47Z","links":{"resolver":"https://pith.science/pith/ISSOG63OTNTWUXB7BD77FWMOOG","bundle":"https://pith.science/pith/ISSOG63OTNTWUXB7BD77FWMOOG/bundle.json","state":"https://pith.science/pith/ISSOG63OTNTWUXB7BD77FWMOOG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ISSOG63OTNTWUXB7BD77FWMOOG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ISSOG63OTNTWUXB7BD77FWMOOG","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":"df16c866d36159f115c048044296f824384f51f56a3a24336cf164731c61ce7f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-07-06T13:04:53Z","title_canon_sha256":"dd5f8e138f2004085a0677f2e2819842952de49a0411b92a63fc88b83253e979"},"schema_version":"1.0","source":{"id":"2007.02716","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.02716","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"arxiv_version","alias_value":"2007.02716v2","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.02716","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"pith_short_12","alias_value":"ISSOG63OTNTW","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"pith_short_16","alias_value":"ISSOG63OTNTWUXB7","created_at":"2026-07-05T01:23:06Z"},{"alias_kind":"pith_short_8","alias_value":"ISSOG63O","created_at":"2026-07-05T01:23:06Z"}],"graph_snapshots":[{"event_id":"sha256:6e8f6366c866a7b46b1ba68755394214382a6e32f88270c54a827c43f8c835ab","target":"graph","created_at":"2026-07-05T01:23:06Z","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/2007.02716/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Temperature inversion layers are predicted to be present in ultra-hot giant planet atmospheres. Although such inversion layers have recently been observed in several ultra-hot Jupiters, the chemical species responsible for creating the inversion remain unidentified. Here, we present observations of the thermal emission spectrum of an ultra-hot Jupiter, WASP-189b, at high spectral resolution using the HARPS-N spectrograph. Using the cross-correlation technique, we detect a strong Fe I signal. The detected Fe I spectral lines are found in emission, which is direct evidence of a temperature inver","authors_text":"A. Reiners, E. Pall\\'e, F. Yan, G. Chen, K. Molaverdikhani, L. Nortmann, M. Stangret, N. Casasayas-Barris, P. Molli\\`ere","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-07-06T13:04:53Z","title":"A temperature inversion with atomic iron in the ultra-hot dayside atmosphere of WASP-189b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.02716","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":"sha256:32fd36d27487eee68ec0c4d2cc192463071b3756261140fd997d43cb66fc9e2b","target":"record","created_at":"2026-07-05T01:23:06Z","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":"df16c866d36159f115c048044296f824384f51f56a3a24336cf164731c61ce7f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-07-06T13:04:53Z","title_canon_sha256":"dd5f8e138f2004085a0677f2e2819842952de49a0411b92a63fc88b83253e979"},"schema_version":"1.0","source":{"id":"2007.02716","kind":"arxiv","version":2}},"canonical_sha256":"44a4e37b6e9b676a5c3f08fff2d98e7185cf89d9a98ec680ced5d5966efb78bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"44a4e37b6e9b676a5c3f08fff2d98e7185cf89d9a98ec680ced5d5966efb78bc","first_computed_at":"2026-07-05T01:23:06.404399Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:23:06.404399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BLpYmuVHw+1iQwJMWSrZ81XFBnk4v43/E9qZdgSPSeboyLTOsxKOJPJlk9wjg/NygZPpkPm+m3/VRIy+Pq12AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:23:06.404881Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.02716","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32fd36d27487eee68ec0c4d2cc192463071b3756261140fd997d43cb66fc9e2b","sha256:6e8f6366c866a7b46b1ba68755394214382a6e32f88270c54a827c43f8c835ab"],"state_sha256":"239ede03612d5b3a1f4ddb6eae86ce50fce070c6683732e94f9eb7f5aa11bfd1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/xcfUOhmMFTgZt6UI/+3YVdoRp1BxINy0/rh6tY7X2FNs/EwOqhCNony+gLkhPlxEohhXa1J7WlBuQpMuRO3BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:54:47.133653Z","bundle_sha256":"665f822e42cde6e97c643570b36b0cd4196191b149161e26908bbd1092e836cb"}}