{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:WLXUQLJX5R7JVY2GL4PJM52UAC","short_pith_number":"pith:WLXUQLJX","schema_version":"1.0","canonical_sha256":"b2ef482d37ec7e9ae3465f1e96775400864d2a9303bb4edc5ddd916b5a4c5d88","source":{"kind":"arxiv","id":"1702.00013","version":1},"attestation_state":"computed","paper":{"title":"Four Sub-Saturns with Dissimilar Densities: Windows into Planetary Cores and Envelopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Andrew W. Howard, Benjamin J. Fulton, David R. Ciardi, Elliott P. Horch, Eric Lopez, Erik A. Petigura, Evan Sinukoff, Howard T. Isaacson, Ian J. M. Crossfield, John M. Brewer, Joshua E. Schlieder, Lauren M. Weiss, Lea Hirsch, Mark E. Everett, Steve B. Howell","submitted_at":"2017-01-31T19:00:02Z","abstract_excerpt":"We present results from a Keck/HIRES radial velocity campaign to study four sub-Saturn-sized planets, K2-27b, K2-32b, K2-39b, and K2-108b, with the goal of understanding their masses, orbits, and heavy element enrichment. The planets have similar sizes $(R_P = 4.5-5.5~R_E)$, but have dissimilar masses $(M_P = 16-60~M_E)$, implying a diversity in their core and envelope masses. K2-32b is the least massive $(M_P = 16.5 \\pm 2.7~M_E)$ and orbits in close proximity to two sub-Neptunes near a 3:2:1 period commensurability. K2-27b and K2-39b are significantly more massive at $M_P = 30.9 \\pm 4.6~M_E$ "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1702.00013","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-01-31T19:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"95b84ed2e4e442f678619c977babf99320cfe64a60ee62081edbbb07b92c42ae","abstract_canon_sha256":"faba189df8e4c442edbd8074bf3b6c6a1d24cf8645b4fcdb312fdcd79365a377"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:46.650964Z","signature_b64":"w120SBkM9V+Hi5Q1xunK2Are5OUkKuhbvqf9Y7SwoxCjAkxOVHkp1iCnsf3/NYJksbEQTSZPce7NH+gLR6wfAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2ef482d37ec7e9ae3465f1e96775400864d2a9303bb4edc5ddd916b5a4c5d88","last_reissued_at":"2026-05-18T00:48:46.650400Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:46.650400Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Four Sub-Saturns with Dissimilar Densities: Windows into Planetary Cores and Envelopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Andrew W. Howard, Benjamin J. Fulton, David R. Ciardi, Elliott P. Horch, Eric Lopez, Erik A. Petigura, Evan Sinukoff, Howard T. Isaacson, Ian J. M. Crossfield, John M. Brewer, Joshua E. Schlieder, Lauren M. Weiss, Lea Hirsch, Mark E. Everett, Steve B. Howell","submitted_at":"2017-01-31T19:00:02Z","abstract_excerpt":"We present results from a Keck/HIRES radial velocity campaign to study four sub-Saturn-sized planets, K2-27b, K2-32b, K2-39b, and K2-108b, with the goal of understanding their masses, orbits, and heavy element enrichment. The planets have similar sizes $(R_P = 4.5-5.5~R_E)$, but have dissimilar masses $(M_P = 16-60~M_E)$, implying a diversity in their core and envelope masses. K2-32b is the least massive $(M_P = 16.5 \\pm 2.7~M_E)$ and orbits in close proximity to two sub-Neptunes near a 3:2:1 period commensurability. K2-27b and K2-39b are significantly more massive at $M_P = 30.9 \\pm 4.6~M_E$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.00013","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1702.00013","created_at":"2026-05-18T00:48:46.650491+00:00"},{"alias_kind":"arxiv_version","alias_value":"1702.00013v1","created_at":"2026-05-18T00:48:46.650491+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.00013","created_at":"2026-05-18T00:48:46.650491+00:00"},{"alias_kind":"pith_short_12","alias_value":"WLXUQLJX5R7J","created_at":"2026-05-18T12:31:53.515858+00:00"},{"alias_kind":"pith_short_16","alias_value":"WLXUQLJX5R7JVY2G","created_at":"2026-05-18T12:31:53.515858+00:00"},{"alias_kind":"pith_short_8","alias_value":"WLXUQLJX","created_at":"2026-05-18T12:31:53.515858+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC","json":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC.json","graph_json":"https://pith.science/api/pith-number/WLXUQLJX5R7JVY2GL4PJM52UAC/graph.json","events_json":"https://pith.science/api/pith-number/WLXUQLJX5R7JVY2GL4PJM52UAC/events.json","paper":"https://pith.science/paper/WLXUQLJX"},"agent_actions":{"view_html":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC","download_json":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC.json","view_paper":"https://pith.science/paper/WLXUQLJX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1702.00013&json=true","fetch_graph":"https://pith.science/api/pith-number/WLXUQLJX5R7JVY2GL4PJM52UAC/graph.json","fetch_events":"https://pith.science/api/pith-number/WLXUQLJX5R7JVY2GL4PJM52UAC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC/action/storage_attestation","attest_author":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC/action/author_attestation","sign_citation":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC/action/citation_signature","submit_replication":"https://pith.science/pith/WLXUQLJX5R7JVY2GL4PJM52UAC/action/replication_record"}},"created_at":"2026-05-18T00:48:46.650491+00:00","updated_at":"2026-05-18T00:48:46.650491+00:00"}