{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2RQOD5JHXULLN4274OSOBTUXKX","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":"ef0c4dfb755f0ae98c323f9c9c7751f1b9cd296754f3860efb3a38493b182198","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-25T03:08:31Z","title_canon_sha256":"42c028bcd9c853604ed7df22b7526d9ffc1c4ac0255a9239af7627f006f84e44"},"schema_version":"1.0","source":{"id":"1211.5721","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5721","created_at":"2026-05-18T01:52:55Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5721v1","created_at":"2026-05-18T01:52:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5721","created_at":"2026-05-18T01:52:55Z"},{"alias_kind":"pith_short_12","alias_value":"2RQOD5JHXULL","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2RQOD5JHXULLN427","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2RQOD5JH","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:f0afa344913035fe8f19f8037ba61938c4b269c95a361b5f201290fd5098d20f","target":"graph","created_at":"2026-05-18T01:52:55Z","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 present deep Sparse Aperture Masking (SAM) observations obtained with the ESO Very Large Telescope of the pre-transitional disk object FL Cha (SpT=K8, d=160 pc), the disk of which is known to have a wide optically thin gap separating optically thick inner and outer disk components. We find non-zero closure phases, indicating a significant flux asymmetry in the K-band emission (e.g., a departure from a single point source detection). We also present radiative transfer modeling of the SED of the FL Cha system and find that the gap extends from ~0.06 to ~8.3 AU. We demonstrate that the non-zer","authors_text":"Adam L. Kraus, Andres Jordan, Francois Menard, Geoffrey S. Mathews, Hector Canovas, Lucas A. Cieza, Matthias R. Schreiber, Michael J. Ireland, Peter Tuthill, Sebastian Perez, Simon Casassus, Sylvestre Lacour","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-25T03:08:31Z","title":"Sparse Aperture Masking Observations of the FL Cha Pre-transitional Disk"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5721","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:f7a95b5c44b1ab3551fb7083d00320d113ff4893e5f1f9339017aa778d9f08e8","target":"record","created_at":"2026-05-18T01:52:55Z","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":"ef0c4dfb755f0ae98c323f9c9c7751f1b9cd296754f3860efb3a38493b182198","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-25T03:08:31Z","title_canon_sha256":"42c028bcd9c853604ed7df22b7526d9ffc1c4ac0255a9239af7627f006f84e44"},"schema_version":"1.0","source":{"id":"1211.5721","kind":"arxiv","version":1}},"canonical_sha256":"d460e1f527bd16b6f35fe3a4e0ce9755fb565a149d60e98ec5d23db98abe07e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d460e1f527bd16b6f35fe3a4e0ce9755fb565a149d60e98ec5d23db98abe07e8","first_computed_at":"2026-05-18T01:52:55.427405Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:55.427405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a6MzZcL7pLYxqYEYuS/Fx8wByT/Vop4cx7PPFoEsDGD9NdcM5yU80850IFtvbsTIrqDtzizmxphaXK4gg63qAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:55.427900Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.5721","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f7a95b5c44b1ab3551fb7083d00320d113ff4893e5f1f9339017aa778d9f08e8","sha256:f0afa344913035fe8f19f8037ba61938c4b269c95a361b5f201290fd5098d20f"],"state_sha256":"6d5ec3b281f2a9f34504e86f2414fda6990e0bbc7f5b64e49470e27947c883d8"}