{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:A3YD7M5ME7X6IRY3MPYLKFQ2AT","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":"b7baf40d163eac710b4a03ce2cc86328b180745c863724df880c3e8db1d80a13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-02T19:00:00Z","title_canon_sha256":"eb2a7ba85cba42f943ea5040e8c32c95aea514f3e89f692c3e89aef9a708e78f"},"schema_version":"1.0","source":{"id":"1803.01004","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.01004","created_at":"2026-05-18T00:12:52Z"},{"alias_kind":"arxiv_version","alias_value":"1803.01004v1","created_at":"2026-05-18T00:12:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.01004","created_at":"2026-05-18T00:12:52Z"},{"alias_kind":"pith_short_12","alias_value":"A3YD7M5ME7X6","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"A3YD7M5ME7X6IRY3","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"A3YD7M5M","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:cceb3a225919ad64afcdd02a4b6b26ece3ee2e85bee73510fe581d6cde58ed2d","target":"graph","created_at":"2026-05-18T00:12:52Z","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 have investigated the shape of the extinction curve in the infrared up to ~25 {\\mu}m for the Orion A star-forming complex. The basis of this work is near-infrared data acquired with VISTA, in combination with Pan-STARRS and mid-infrared Spitzer photometry. We obtain colour excess ratios for eight passbands by fitting a series of colour-colour diagrams. The fits are performed using Markov chain Monte Carlo methods, together with a linear model under a Bayesian formalism. The resulting colour excess ratios are directly interpreted as a measure of the extinction law. We show that the Orion A m","authors_text":"Jo\\~ao Alves, Marco Lombardi, Stefan Meingast","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-02T19:00:00Z","title":"VISION - Vienna Survey in Orion II. Infrared extinction in Orion A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.01004","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":"sha256:800f74acb5e1c2eadd34de58c36259256af47b6a828c05b349faced96682a7e5","target":"record","created_at":"2026-05-18T00:12:52Z","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":"b7baf40d163eac710b4a03ce2cc86328b180745c863724df880c3e8db1d80a13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-02T19:00:00Z","title_canon_sha256":"eb2a7ba85cba42f943ea5040e8c32c95aea514f3e89f692c3e89aef9a708e78f"},"schema_version":"1.0","source":{"id":"1803.01004","kind":"arxiv","version":1}},"canonical_sha256":"06f03fb3ac27efe4471b63f0b5161a04ebfeef7cd6305a1c79a07f2278d83435","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06f03fb3ac27efe4471b63f0b5161a04ebfeef7cd6305a1c79a07f2278d83435","first_computed_at":"2026-05-18T00:12:52.982185Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:52.982185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G+VGY25Dxs99A0lqMs9ECLttglSPSwvmp6HVtQuVxH4K9Y7cn3YIyTUkkbGdkfCgsGeLRXQPF/2Vo17WgU5ACg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:52.982697Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.01004","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:800f74acb5e1c2eadd34de58c36259256af47b6a828c05b349faced96682a7e5","sha256:cceb3a225919ad64afcdd02a4b6b26ece3ee2e85bee73510fe581d6cde58ed2d"],"state_sha256":"300bf51b5704b65f02f0d02bb14eb1905d4c03d10ef77fc75d9304d42de937ed"}