{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:SZ3SWXNPQBSBVQRXQ4TQXKIOLQ","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":"25f59ede7ddfa5fea04ef040bdddff1e3a96a15f352a551466ea672255b0c552","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-12T14:43:10Z","title_canon_sha256":"82def8ba8df3cda2f4379baf0eaa3969b7f1c6f06f48f0de3f914f9d56b13264"},"schema_version":"1.0","source":{"id":"1610.03731","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.03731","created_at":"2026-05-18T00:55:40Z"},{"alias_kind":"arxiv_version","alias_value":"1610.03731v1","created_at":"2026-05-18T00:55:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.03731","created_at":"2026-05-18T00:55:40Z"},{"alias_kind":"pith_short_12","alias_value":"SZ3SWXNPQBSB","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"SZ3SWXNPQBSBVQRX","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"SZ3SWXNP","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:ea999a5a23e72f3895795a96c1a84ba67b57c743e3505569efe51736ba28bcb3","target":"graph","created_at":"2026-05-18T00:55:40Z","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":"To detect stellar activity cycles and study the possible star-planet interactions (SPI's), we have developed both HK$\\alpha$ and SPI-HK$\\alpha$ projects since 1999 and 2012 respectively.\n  In this work, we present preliminary results of possible SPI's studying the chromospheric activity and look for possible correlations between stellar activity and stellar/planetary parameters. We find that for stars with similar T$_{eff}$, stellar activity increases with the mass of the planet, similar to previous works. However, stellar ages can also play a role and a larger stellar sample is needed to veri","authors_text":"Andrea P. Buccino, Carlos E. Saffe, Mat\\'ias G. Flores, Pablo J. D. Mauas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-12T14:43:10Z","title":"A possible long-term activity cycle for {\\iota} Horologii: First results from the HK{\\alpha} & SPI-HK{\\alpha} projects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.03731","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":"sha256:5c187577493254c849d3eca47fe639dd4207fdcf3d3ee7d7b9df136475424953","target":"record","created_at":"2026-05-18T00:55:40Z","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":"25f59ede7ddfa5fea04ef040bdddff1e3a96a15f352a551466ea672255b0c552","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-12T14:43:10Z","title_canon_sha256":"82def8ba8df3cda2f4379baf0eaa3969b7f1c6f06f48f0de3f914f9d56b13264"},"schema_version":"1.0","source":{"id":"1610.03731","kind":"arxiv","version":1}},"canonical_sha256":"96772b5daf80641ac23787270ba90e5c32af8d7d135874ff50e8b32b450975c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96772b5daf80641ac23787270ba90e5c32af8d7d135874ff50e8b32b450975c7","first_computed_at":"2026-05-18T00:55:40.780631Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:40.780631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5g1r0IebYLasTu+tvgsRf3zR9Wj/3xe5FNW7kngHPFtccha6ABCt+RgaagZ3jdKD0BnSqP5AKHNXYKurTb+dAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:40.781398Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.03731","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c187577493254c849d3eca47fe639dd4207fdcf3d3ee7d7b9df136475424953","sha256:ea999a5a23e72f3895795a96c1a84ba67b57c743e3505569efe51736ba28bcb3"],"state_sha256":"b1d095fb88a31f1e22c42e33fceafc1efa5c16e368f586f735e3324927efaabf"}