{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:O76LELWAV7HJB6L3SZ7EE4QR4R","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":"41867d52ee1824017c52f041e0a83ad8ef43546d26d10223d29910319d5273b1","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","title_canon_sha256":"fe5896c5bfe12ee05dd73005f253163b6eaec9c2d7ae78846a811b4e6a5d5d4d"},"schema_version":"1.0","source":{"id":"1709.00417","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00417","created_at":"2026-05-18T00:29:54Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00417v2","created_at":"2026-05-18T00:29:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00417","created_at":"2026-05-18T00:29:54Z"},{"alias_kind":"pith_short_12","alias_value":"O76LELWAV7HJ","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"O76LELWAV7HJB6L3","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"O76LELWA","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:2319ab27d953d2fcb6f3a177816d6569131a3a8baedacc1646112ea4878df0d3","target":"graph","created_at":"2026-05-18T00:29:54Z","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 observations of the known edge-on debris disk around HIP 79977 (HD 146897, F star in Upper Sco, 123 pc), taken with the ZIMPOL differential polarimeter of the SPHERE instrument in the Very Broad Band filter ($\\lambda_c=735$ nm, $\\Delta\\lambda=290$ nm) with a spatial resolution of about 25 mas. We measure the polarization flux along and perpendicular to the disk spine of the highly inclined disk for projected separations between 0.2\" (25 AU) and 1.6\" (200 AU) and investigate the diagnostic potential of such data with model simulations. The polarized flux contrast ratio for the disk i","authors_text":"A. Baruffolo, A. Bazzon, A. Boccaletti, A. Costille, A. Pavlov, B. Salasnich, C. Dominik, C. Ginski, Ch. Thalmann, D. Gisler, D. Mouillet, E. Lagadec, E. Sissa, F. M\\'enard, F. Wildi, H. M. Schmid, J. H. Girard, J. L. Beuzit, J. Milli, J. Olofsson, J. Pragt, J. Szulagyi, K. Dohlen, M. Feldt, M. Janson, M. Kasper, M. Langlois, M. R. Meyer, M. Suarez, M. Turatto, N. Engler, N. Hubin, P. Puget, Q. Kral, R. Claudi, R. Gratton, R. Roelfsema, R. Siebenmorgen, S. Desidera, S. P. Quanz, S. Udry, T. Fusco, T. Henning","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","title":"The HIP 79977 debris disk in polarized light"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00417","kind":"arxiv","version":2},"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":"sha256:58e8282d3d0dfa98c51ea720d161bee6a7c9fe672355da6d08573b4bed1153ae","target":"record","created_at":"2026-05-18T00:29:54Z","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":"41867d52ee1824017c52f041e0a83ad8ef43546d26d10223d29910319d5273b1","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","title_canon_sha256":"fe5896c5bfe12ee05dd73005f253163b6eaec9c2d7ae78846a811b4e6a5d5d4d"},"schema_version":"1.0","source":{"id":"1709.00417","kind":"arxiv","version":2}},"canonical_sha256":"77fcb22ec0afce90f97b967e427211e4739905a9942be13205a7f33c4d87644e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77fcb22ec0afce90f97b967e427211e4739905a9942be13205a7f33c4d87644e","first_computed_at":"2026-05-18T00:29:54.563276Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:54.563276Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yj7RHnxG9QGGpvdxcD9pjnlYYf0u01jeAJE9BIqpbRJ8lH2Rf0kNodEDpf3LCQyxUz2C7Eg+dUDjRyG36Py+BA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:54.563992Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.00417","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58e8282d3d0dfa98c51ea720d161bee6a7c9fe672355da6d08573b4bed1153ae","sha256:2319ab27d953d2fcb6f3a177816d6569131a3a8baedacc1646112ea4878df0d3"],"state_sha256":"b18b603501b96694710e0d291c3ecc40b4a6a71fbadd64d33cf9971fa78aedb0"}