{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:TGR4SBZWY42YZCAGY6CLYMR4GT","short_pith_number":"pith:TGR4SBZW","schema_version":"1.0","canonical_sha256":"99a3c90736c7358c8806c784bc323c34f655fcfda6be4cccc535f5c1409b9a61","source":{"kind":"arxiv","id":"2204.07055","version":1},"attestation_state":"computed","paper":{"title":"Two Rings and a Marginally Resolved, 5 AU, Disk Around LkCa 15 Identified Via Near Infrared Sparse Aperture Masking Interferometry","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Anand Sivaramakrishnan, Anthony Cheetham, Anthony Soulain, Arthur Vigan, Dori Blakely, Doug Johnstone, Faustine Cantalloube, Joel Sanchez-Bermudez, Logan Francis, Nienke van der Marel, Peter Tuthill, Rachel Cooper, Ruobing Dong","submitted_at":"2022-04-14T15:57:10Z","abstract_excerpt":"Sparse aperture masking interferometry (SAM) is a high resolution observing technique that allows for imaging at and beyond a telescope's diffraction limit. The technique is ideal for searching for stellar companions at small separations from their host star; however, previous analysis of SAM observations of young stars surrounded by dusty disks have had difficulties disentangling planet and extended disk emission. We analyse VLT/SPHERE-IRDIS SAM observations of the transition disk LkCa\\,15, model the extended disk emission, probe for planets at small separations, and improve contrast limits f"},"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":"2204.07055","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-04-14T15:57:10Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"92a4861d2258151b92fc91dc3cf943338e626a6b389752c5c2401be59ea05bd0","abstract_canon_sha256":"6617f4ae3b5af349519949ef39828d39f0764c6a0f23b0a7caa6ef079b30ff09"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:26:01.614665Z","signature_b64":"9Vy0hwyD3prpwPjizWgOI4ihAttf2p/ySRXP+CYwJDzcTaMnDlTKmOpDei8o+BE/qRq1VN96tuS/9gTXe5PnBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99a3c90736c7358c8806c784bc323c34f655fcfda6be4cccc535f5c1409b9a61","last_reissued_at":"2026-07-05T04:26:01.614190Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:26:01.614190Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Two Rings and a Marginally Resolved, 5 AU, Disk Around LkCa 15 Identified Via Near Infrared Sparse Aperture Masking Interferometry","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Anand Sivaramakrishnan, Anthony Cheetham, Anthony Soulain, Arthur Vigan, Dori Blakely, Doug Johnstone, Faustine Cantalloube, Joel Sanchez-Bermudez, Logan Francis, Nienke van der Marel, Peter Tuthill, Rachel Cooper, Ruobing Dong","submitted_at":"2022-04-14T15:57:10Z","abstract_excerpt":"Sparse aperture masking interferometry (SAM) is a high resolution observing technique that allows for imaging at and beyond a telescope's diffraction limit. The technique is ideal for searching for stellar companions at small separations from their host star; however, previous analysis of SAM observations of young stars surrounded by dusty disks have had difficulties disentangling planet and extended disk emission. We analyse VLT/SPHERE-IRDIS SAM observations of the transition disk LkCa\\,15, model the extended disk emission, probe for planets at small separations, and improve contrast limits f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.07055","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2204.07055/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2204.07055","created_at":"2026-07-05T04:26:01.614241+00:00"},{"alias_kind":"arxiv_version","alias_value":"2204.07055v1","created_at":"2026-07-05T04:26:01.614241+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.07055","created_at":"2026-07-05T04:26:01.614241+00:00"},{"alias_kind":"pith_short_12","alias_value":"TGR4SBZWY42Y","created_at":"2026-07-05T04:26:01.614241+00:00"},{"alias_kind":"pith_short_16","alias_value":"TGR4SBZWY42YZCAG","created_at":"2026-07-05T04:26:01.614241+00:00"},{"alias_kind":"pith_short_8","alias_value":"TGR4SBZW","created_at":"2026-07-05T04:26:01.614241+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/TGR4SBZWY42YZCAGY6CLYMR4GT","json":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT.json","graph_json":"https://pith.science/api/pith-number/TGR4SBZWY42YZCAGY6CLYMR4GT/graph.json","events_json":"https://pith.science/api/pith-number/TGR4SBZWY42YZCAGY6CLYMR4GT/events.json","paper":"https://pith.science/paper/TGR4SBZW"},"agent_actions":{"view_html":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT","download_json":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT.json","view_paper":"https://pith.science/paper/TGR4SBZW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2204.07055&json=true","fetch_graph":"https://pith.science/api/pith-number/TGR4SBZWY42YZCAGY6CLYMR4GT/graph.json","fetch_events":"https://pith.science/api/pith-number/TGR4SBZWY42YZCAGY6CLYMR4GT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT/action/storage_attestation","attest_author":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT/action/author_attestation","sign_citation":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT/action/citation_signature","submit_replication":"https://pith.science/pith/TGR4SBZWY42YZCAGY6CLYMR4GT/action/replication_record"}},"created_at":"2026-07-05T04:26:01.614241+00:00","updated_at":"2026-07-05T04:26:01.614241+00:00"}