{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JX22AV4DAEPBEJVABXBFKJIPSJ","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":"dd4d725def667834892030bc6a545f24032b5bc8d3792c8aebfc66a7c2528cf3","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-01-07T16:27:02Z","title_canon_sha256":"abd0c0d9c228bbfa49a8d7b3e734a3c929c5fccb1901802ee7d0d30abce3a155"},"schema_version":"1.0","source":{"id":"1901.02367","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02367","created_at":"2026-05-17T23:54:08Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02367v1","created_at":"2026-05-17T23:54:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02367","created_at":"2026-05-17T23:54:08Z"},{"alias_kind":"pith_short_12","alias_value":"JX22AV4DAEPB","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"JX22AV4DAEPBEJVA","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"JX22AV4D","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:eef4d9ebb106745bf1af76e4c64e8b33483ec52e6da08645939c0980e7649179","target":"graph","created_at":"2026-05-17T23:54:08Z","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 report the detection of a Neptune-mass exoplanet around the M4.0 dwarf GJ 4276 (G 232-070) based on radial velocity (RV) observations obtained with the CARMENES spectrograph. The RV variations of GJ 4276 are best explained by the presence of a planetary companion that has a minimum mass of $m_{\\rm b}\\sin i \\approx 16\\, M_\\oplus$ on a $P_{\\rm b}=13.35$ day orbit. The analysis of the activity indicators and spectral diagnostics exclude stellar induced RV perturbations and prove the planetary interpretation of the RV signal. We show that a circular single-planet solution can be excluded by mea","authors_text":"A. Kaminski, A. Quirrenbach, A. Reiners, A. Schweitzer, C. Rodr\\'iguez-L\\'opez, D. Montes, E. Nagel, E. Rodr\\'iguez, E. W. Guenther, G. Anglada-Escud\\'e, I. Ribas, J. A. Caballero, J. Aceituno, J. C. Morales, J. H. M. M. Schmitt, L. Gonz\\'alez-Cuesta, M. Cort\\'es-Contreras, M. J. L\\'opez-Gonz\\'alez, M. K\\\"urster, M. Lafarga, M. Zechmeister, P. J. Amado, S. Czesla, S. Dreizler, S. V. Jeffers, T. Henning, V. J. S. B\\'ejar, V. M. Passegger","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-01-07T16:27:02Z","title":"The CARMENES search for exoplanets around M dwarfs - The enigmatic planetary system GJ 4276: One eccentric planet or two planets in a 2:1 resonance?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02367","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:a250e96637c12e841e4d2a1a6f9e4eb9b8eaf5ca1d8416ff252a51bdb568638d","target":"record","created_at":"2026-05-17T23:54:08Z","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":"dd4d725def667834892030bc6a545f24032b5bc8d3792c8aebfc66a7c2528cf3","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-01-07T16:27:02Z","title_canon_sha256":"abd0c0d9c228bbfa49a8d7b3e734a3c929c5fccb1901802ee7d0d30abce3a155"},"schema_version":"1.0","source":{"id":"1901.02367","kind":"arxiv","version":1}},"canonical_sha256":"4df5a05783011e1226a00dc255250f926edea80fc7d2e3c0f9d219062ed087e6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4df5a05783011e1226a00dc255250f926edea80fc7d2e3c0f9d219062ed087e6","first_computed_at":"2026-05-17T23:54:08.056669Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:08.056669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MMrwUMsWGGwTUzpU+p5+pGHJvKL9N7Q8q2/fjDvKsEDBzxJfIVZQbIzl5IKB1T1hD1gRQq3QJX0cqtuOH6BRDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:08.057072Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.02367","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a250e96637c12e841e4d2a1a6f9e4eb9b8eaf5ca1d8416ff252a51bdb568638d","sha256:eef4d9ebb106745bf1af76e4c64e8b33483ec52e6da08645939c0980e7649179"],"state_sha256":"555a0de4c78231b7ffbb7ad1195fbaeb67096ca0f3b2252fb3f4fbbc15974e8a"}