{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:2WBNWNCWCFX5VF3KK3LWKJBVOA","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":"510d298396d6fe0f144aa291d1783ebe60d7a36e8b069d44b1348dfc2d0e5149","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-01T21:00:00Z","title_canon_sha256":"5602282de75d2adad6014ba9f46f7837a0f7f1298b0e50e09b407fdf0fb3bf61"},"schema_version":"1.0","source":{"id":"1702.00448","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.00448","created_at":"2026-05-18T00:43:26Z"},{"alias_kind":"arxiv_version","alias_value":"1702.00448v1","created_at":"2026-05-18T00:43:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.00448","created_at":"2026-05-18T00:43:26Z"},{"alias_kind":"pith_short_12","alias_value":"2WBNWNCWCFX5","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"2WBNWNCWCFX5VF3K","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"2WBNWNCW","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:e375582541a961b262a1f61a856754c95a6dbe8ed07b99fc98c00f0345af7716","target":"graph","created_at":"2026-05-18T00:43:26Z","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":"High-resolution optical spectroscopy during the transit of HD 189733b, a prototypical hot Jupiter, allowed the resolution of the Na I D sodium lines in the planet, giving access to the extreme conditions of the planet upper atmosphere. We have undertaken HEARTS, a spectroscopic survey of exoplanet upper atmospheres, to perform a comparative study of hot gas giants and determine how stellar irradiation affect them. Here, we report on the first HEARTS observations of the hot Saturn-mass planet WASP-49b. We observed the planet with the HARPS high-resolution spectrograph at ESO 3.6m telescope. We ","authors_text":"A. Santerne, A. Wyttenbach, B. Lavie, C. Lovis, C. Melo, D. Ehrenreich, D. S\\'egransan, F. Murgas, F. Pepe, H. M. Cegla, K. Heng, L. Pino, N. Astudillo-Defru, R. Allart, S. Udry, V. Bourrier","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-01T21:00:00Z","title":"Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) I. Detection of hot neutral sodium at high altitudes on WASP-49b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.00448","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":"sha256:89f252239985a6093904f2d55781becc6cdd0f70a94b82fc722036d8c4fb7dc0","target":"record","created_at":"2026-05-18T00:43:26Z","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":"510d298396d6fe0f144aa291d1783ebe60d7a36e8b069d44b1348dfc2d0e5149","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-01T21:00:00Z","title_canon_sha256":"5602282de75d2adad6014ba9f46f7837a0f7f1298b0e50e09b407fdf0fb3bf61"},"schema_version":"1.0","source":{"id":"1702.00448","kind":"arxiv","version":1}},"canonical_sha256":"d582db3456116fda976a56d7652435702419a6baff1d58ddaf710554f4688210","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d582db3456116fda976a56d7652435702419a6baff1d58ddaf710554f4688210","first_computed_at":"2026-05-18T00:43:26.908367Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:26.908367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ycbJIVSwAArz9STNbStPLzoNYYhYHIVA1W8qD+Kcotqxlwv25IWfeTc87Lkd26FfSx2qZY/j4RgzhW8gkvviAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:26.908963Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.00448","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89f252239985a6093904f2d55781becc6cdd0f70a94b82fc722036d8c4fb7dc0","sha256:e375582541a961b262a1f61a856754c95a6dbe8ed07b99fc98c00f0345af7716"],"state_sha256":"bef42d502d087884b1259a71c7c0f1827a7e430ab66fedac758fdaae42fa5aa2"}