{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:55W37MHPJHS6XXNH6VSDPHJZJV","short_pith_number":"pith:55W37MHP","canonical_record":{"source":{"id":"1805.02261","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-06T18:34:02Z","cross_cats_sorted":[],"title_canon_sha256":"c9adacd39b32f724611f81281357785e86c17741a84c1cf589522820bf378452","abstract_canon_sha256":"dd6a33884b8a6de36ef7efd6e39b0be24a2f6ffc56d064fbbe846911563bd87b"},"schema_version":"1.0"},"canonical_sha256":"ef6dbfb0ef49e5ebdda7f564379d394d4d3ca62a2e1173d46939b374d53522f4","source":{"kind":"arxiv","id":"1805.02261","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02261","created_at":"2026-05-18T00:07:34Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02261v1","created_at":"2026-05-18T00:07:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02261","created_at":"2026-05-18T00:07:34Z"},{"alias_kind":"pith_short_12","alias_value":"55W37MHPJHS6","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"55W37MHPJHS6XXNH","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"55W37MHP","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:55W37MHPJHS6XXNH6VSDPHJZJV","target":"record","payload":{"canonical_record":{"source":{"id":"1805.02261","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-06T18:34:02Z","cross_cats_sorted":[],"title_canon_sha256":"c9adacd39b32f724611f81281357785e86c17741a84c1cf589522820bf378452","abstract_canon_sha256":"dd6a33884b8a6de36ef7efd6e39b0be24a2f6ffc56d064fbbe846911563bd87b"},"schema_version":"1.0"},"canonical_sha256":"ef6dbfb0ef49e5ebdda7f564379d394d4d3ca62a2e1173d46939b374d53522f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:34.489765Z","signature_b64":"uh9ciq3icrIFDyVV4sWrJmXu2TktXva51k5HDiSGB7MfS5YF6XZK3wk5dN1MjsUeuRVKdstGCP+Ir7JRSF+JDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef6dbfb0ef49e5ebdda7f564379d394d4d3ca62a2e1173d46939b374d53522f4","last_reissued_at":"2026-05-18T00:07:34.489112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:34.489112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.02261","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:07:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OJTGOZBubB8kTfx5G6c9Is1MJBYOLmwDRG4Bsr92St+gZVBiWCU0I6xOQWtDw9T6IL8Rpbhw1l+mHLKe/ctPAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T15:09:47.623026Z"},"content_sha256":"1137bdd06aff86fd6dfc7c42e3429deae5f9b196aa018666925009994fd77b19","schema_version":"1.0","event_id":"sha256:1137bdd06aff86fd6dfc7c42e3429deae5f9b196aa018666925009994fd77b19"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:55W37MHPJHS6XXNH6VSDPHJZJV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First direct detection of a polarized companion outside of a resolved circumbinary disk around CS Cha","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Juh\\'asz, C. F. Manara, C. Ginski, C. Keller, F. M\\'enard, F. Snik, G. Chauvin, J. de Boer, J. Milli, J. Olofsson, L. P\\'erez, M. Benisty, M. Flock, M. Kenworthy, M. Wilby, N. Vogt, P. Delorme, P. Pinilla, R. G. van Holstein, T. Birnstiel, T. O. B. Schmidt","submitted_at":"2018-05-06T18:34:02Z","abstract_excerpt":"In the present study we aim to investigate the circumstellar environment of the spectroscopic binary T Tauri star CS Cha. From unresolved mid- to far-infrared photometry it is predicted that CS Cha hosts a disk with a large cavity. In addition, SED modeling suggests significant dust settling, pointing towards an evolved disk that may show signs of ongoing or completed planet formation. We observed CS Cha with the high contrast imager VLT/SPHERE in polarimetric differential imaging mode to resolve the circumbinary disk in near infrared scattered light. These observations were followed-up by VLT"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02261","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:07:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XwCy61pcJnyfQgTUie6hGfQSu27DyZfGFZD8Rfcffvel70g5TaMIbEjQ0OhZoATSuHaIYcEJS2zmbjNyqFGjDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T15:09:47.623753Z"},"content_sha256":"5ead3a3599e0ccf5550433221cc8686537b33da3727d3db287e2b32124432deb","schema_version":"1.0","event_id":"sha256:5ead3a3599e0ccf5550433221cc8686537b33da3727d3db287e2b32124432deb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/55W37MHPJHS6XXNH6VSDPHJZJV/bundle.json","state_url":"https://pith.science/pith/55W37MHPJHS6XXNH6VSDPHJZJV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/55W37MHPJHS6XXNH6VSDPHJZJV/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T15:09:47Z","links":{"resolver":"https://pith.science/pith/55W37MHPJHS6XXNH6VSDPHJZJV","bundle":"https://pith.science/pith/55W37MHPJHS6XXNH6VSDPHJZJV/bundle.json","state":"https://pith.science/pith/55W37MHPJHS6XXNH6VSDPHJZJV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/55W37MHPJHS6XXNH6VSDPHJZJV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:55W37MHPJHS6XXNH6VSDPHJZJV","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":"dd6a33884b8a6de36ef7efd6e39b0be24a2f6ffc56d064fbbe846911563bd87b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-06T18:34:02Z","title_canon_sha256":"c9adacd39b32f724611f81281357785e86c17741a84c1cf589522820bf378452"},"schema_version":"1.0","source":{"id":"1805.02261","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02261","created_at":"2026-05-18T00:07:34Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02261v1","created_at":"2026-05-18T00:07:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02261","created_at":"2026-05-18T00:07:34Z"},{"alias_kind":"pith_short_12","alias_value":"55W37MHPJHS6","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"55W37MHPJHS6XXNH","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"55W37MHP","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:5ead3a3599e0ccf5550433221cc8686537b33da3727d3db287e2b32124432deb","target":"graph","created_at":"2026-05-18T00:07:34Z","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":"In the present study we aim to investigate the circumstellar environment of the spectroscopic binary T Tauri star CS Cha. From unresolved mid- to far-infrared photometry it is predicted that CS Cha hosts a disk with a large cavity. In addition, SED modeling suggests significant dust settling, pointing towards an evolved disk that may show signs of ongoing or completed planet formation. We observed CS Cha with the high contrast imager VLT/SPHERE in polarimetric differential imaging mode to resolve the circumbinary disk in near infrared scattered light. These observations were followed-up by VLT","authors_text":"A. Juh\\'asz, C. F. Manara, C. Ginski, C. Keller, F. M\\'enard, F. Snik, G. Chauvin, J. de Boer, J. Milli, J. Olofsson, L. P\\'erez, M. Benisty, M. Flock, M. Kenworthy, M. Wilby, N. Vogt, P. Delorme, P. Pinilla, R. G. van Holstein, T. Birnstiel, T. O. B. Schmidt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-06T18:34:02Z","title":"First direct detection of a polarized companion outside of a resolved circumbinary disk around CS Cha"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02261","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":"sha256:1137bdd06aff86fd6dfc7c42e3429deae5f9b196aa018666925009994fd77b19","target":"record","created_at":"2026-05-18T00:07:34Z","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":"dd6a33884b8a6de36ef7efd6e39b0be24a2f6ffc56d064fbbe846911563bd87b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-06T18:34:02Z","title_canon_sha256":"c9adacd39b32f724611f81281357785e86c17741a84c1cf589522820bf378452"},"schema_version":"1.0","source":{"id":"1805.02261","kind":"arxiv","version":1}},"canonical_sha256":"ef6dbfb0ef49e5ebdda7f564379d394d4d3ca62a2e1173d46939b374d53522f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef6dbfb0ef49e5ebdda7f564379d394d4d3ca62a2e1173d46939b374d53522f4","first_computed_at":"2026-05-18T00:07:34.489112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:34.489112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uh9ciq3icrIFDyVV4sWrJmXu2TktXva51k5HDiSGB7MfS5YF6XZK3wk5dN1MjsUeuRVKdstGCP+Ir7JRSF+JDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:34.489765Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.02261","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1137bdd06aff86fd6dfc7c42e3429deae5f9b196aa018666925009994fd77b19","sha256:5ead3a3599e0ccf5550433221cc8686537b33da3727d3db287e2b32124432deb"],"state_sha256":"74c198e8a1c6a48c8f1b6a30d83c6c4ce6c2e62b59938cab33b56e8ac45bf7b6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xzca0Kf10MyWCI+XeK4p6eijDRy6rSC2Vyyxm9wWOdpG3AhoyLSTT1lDVrZkspKOo2RWf3c3srXdm4t8hW+wCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T15:09:47.627612Z","bundle_sha256":"cc5845d54f802443c67c53e333e7d1adcc7b02786b3861c6db8783b0f9834a4d"}}