{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:F5YSRBHIZY7PTBPZDWJOTML3LX","short_pith_number":"pith:F5YSRBHI","canonical_record":{"source":{"id":"2112.10695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-12-20T17:29:24Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f03884d6c4bcd99817f4cda0c2d829eac5bcbbba614548181126b94498afeeeb","abstract_canon_sha256":"e69576d29478da6a0c9e050d629c009dcca2ae11092c5195b8d11c4d70e95973"},"schema_version":"1.0"},"canonical_sha256":"2f712884e8ce3ef985f91d92e9b17b5dd58a0b513692af3c851ce884cc6a46e5","source":{"kind":"arxiv","id":"2112.10695","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.10695","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"arxiv_version","alias_value":"2112.10695v1","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.10695","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"pith_short_12","alias_value":"F5YSRBHIZY7P","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"pith_short_16","alias_value":"F5YSRBHIZY7PTBPZ","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"pith_short_8","alias_value":"F5YSRBHI","created_at":"2026-07-05T04:04:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:F5YSRBHIZY7PTBPZDWJOTML3LX","target":"record","payload":{"canonical_record":{"source":{"id":"2112.10695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-12-20T17:29:24Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f03884d6c4bcd99817f4cda0c2d829eac5bcbbba614548181126b94498afeeeb","abstract_canon_sha256":"e69576d29478da6a0c9e050d629c009dcca2ae11092c5195b8d11c4d70e95973"},"schema_version":"1.0"},"canonical_sha256":"2f712884e8ce3ef985f91d92e9b17b5dd58a0b513692af3c851ce884cc6a46e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:04:28.536619Z","signature_b64":"fgeDZNvOGoB8LojdhwpEJ53kK185OTc36x5EJL7B0g+kXg3e96W8AyEKuq1u4gwYsttNCtfx6uS3eQUdPDZzAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2f712884e8ce3ef985f91d92e9b17b5dd58a0b513692af3c851ce884cc6a46e5","last_reissued_at":"2026-07-05T04:04:28.536180Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:04:28.536180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.10695","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":"2026-07-05T04:04:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NSBCLcosDGrPVi3ZSPMnMr1bNbSuk2kuWldkqxCckCzFsGbEaqqat8V/OwbwKtWn+4w11yDURnZ2mIkdTJ/jCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T07:32:16.596381Z"},"content_sha256":"0f78ab0775c8a5ef7eab90067e10d27612976f206af3fbf7b9c83a60e50a7ce9","schema_version":"1.0","event_id":"sha256:0f78ab0775c8a5ef7eab90067e10d27612976f206af3fbf7b9c83a60e50a7ce9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:F5YSRBHIZY7PTBPZDWJOTML3LX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. Chiavassa, A. Domiciano De Souza, A. Matter, A. Meilland, A. Soulain, B. Freytag, B. Lopez, C. Dominik, C. Paladini, D. Schertl, E. Kokoulina, E. Lagadec, E. Pantin, F. Allouche, F. Bettonvil, F. Millour, G. Weigelt, G. Yoffe, J.-C. Augereau, J. Drevon, J. Hron, J. Leftley, J. Varga, J. W. Isbell, K.-H. Hofmann, K. Kravchenko, K. Meisenheimer, L. Burtscher, L. Klarmann, L. Labadie, L. Mosoni, L. Szabados, M. Heininger, M. Lehmitz, M. Montarg\\`es, M.R. Hogerheijde, M. Wittkowski, N. Nardetto1, P. Bendjoya, P. Berio, P. Cruzal\\`ebes, P. Stee, R. G. Petrov, R. van Boekel, R. Waters, S. Lagarde, S. Robbe-Dubois, S. Wolf, Th. Henning, V. G\\'amez Rosas, V. Hocd\\'e, W. C. Danchi, W. Jaffe","submitted_at":"2021-12-20T17:29:24Z","abstract_excerpt":"Context. VX Sgr is a cool, evolved, and luminous red star whose stellar parameters are difficult to determine, which affects its classification. Aims. We aim to spatially resolve the photospheric extent as well as the circumstellar environment. Methods. We used interferometric observations obtained with the MATISSE instrument in the L (3 to 4 {\\mu}m), M (4.5 to 5 {\\mu}m), and N (8 to 13 {\\mu}m) bands. We reconstructed monochromatic images using the MIRA software. We used 3D radiation-hydrodynamics (RHD) simulations carried out with CO5BOLD and a uniform disc model to estimate the apparent diam"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.10695","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/2112.10695/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:04:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D/RysiP+2ehZDS1i3g+0e+ATh43MxlCoiv9aGtrajOGkeMvMJr4BnL23jMSsxZhG2gvHDPsC3EFmKmbw61jKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T07:32:16.596767Z"},"content_sha256":"1e89a049d4dd4e06adba51e9bb87a4b5473cc5d320fa6d99bfccb708f4ef2693","schema_version":"1.0","event_id":"sha256:1e89a049d4dd4e06adba51e9bb87a4b5473cc5d320fa6d99bfccb708f4ef2693"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F5YSRBHIZY7PTBPZDWJOTML3LX/bundle.json","state_url":"https://pith.science/pith/F5YSRBHIZY7PTBPZDWJOTML3LX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F5YSRBHIZY7PTBPZDWJOTML3LX/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":"2026-07-06T07:32:16Z","links":{"resolver":"https://pith.science/pith/F5YSRBHIZY7PTBPZDWJOTML3LX","bundle":"https://pith.science/pith/F5YSRBHIZY7PTBPZDWJOTML3LX/bundle.json","state":"https://pith.science/pith/F5YSRBHIZY7PTBPZDWJOTML3LX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F5YSRBHIZY7PTBPZDWJOTML3LX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:F5YSRBHIZY7PTBPZDWJOTML3LX","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":"e69576d29478da6a0c9e050d629c009dcca2ae11092c5195b8d11c4d70e95973","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-12-20T17:29:24Z","title_canon_sha256":"f03884d6c4bcd99817f4cda0c2d829eac5bcbbba614548181126b94498afeeeb"},"schema_version":"1.0","source":{"id":"2112.10695","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.10695","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"arxiv_version","alias_value":"2112.10695v1","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.10695","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"pith_short_12","alias_value":"F5YSRBHIZY7P","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"pith_short_16","alias_value":"F5YSRBHIZY7PTBPZ","created_at":"2026-07-05T04:04:28Z"},{"alias_kind":"pith_short_8","alias_value":"F5YSRBHI","created_at":"2026-07-05T04:04:28Z"}],"graph_snapshots":[{"event_id":"sha256:1e89a049d4dd4e06adba51e9bb87a4b5473cc5d320fa6d99bfccb708f4ef2693","target":"graph","created_at":"2026-07-05T04:04:28Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2112.10695/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Context. VX Sgr is a cool, evolved, and luminous red star whose stellar parameters are difficult to determine, which affects its classification. Aims. We aim to spatially resolve the photospheric extent as well as the circumstellar environment. Methods. We used interferometric observations obtained with the MATISSE instrument in the L (3 to 4 {\\mu}m), M (4.5 to 5 {\\mu}m), and N (8 to 13 {\\mu}m) bands. We reconstructed monochromatic images using the MIRA software. We used 3D radiation-hydrodynamics (RHD) simulations carried out with CO5BOLD and a uniform disc model to estimate the apparent diam","authors_text":"A. Chiavassa, A. Domiciano De Souza, A. Matter, A. Meilland, A. Soulain, B. Freytag, B. Lopez, C. Dominik, C. Paladini, D. Schertl, E. Kokoulina, E. Lagadec, E. Pantin, F. Allouche, F. Bettonvil, F. Millour, G. Weigelt, G. Yoffe, J.-C. Augereau, J. Drevon, J. Hron, J. Leftley, J. Varga, J. W. Isbell, K.-H. Hofmann, K. Kravchenko, K. Meisenheimer, L. Burtscher, L. Klarmann, L. Labadie, L. Mosoni, L. Szabados, M. Heininger, M. Lehmitz, M. Montarg\\`es, M.R. Hogerheijde, M. Wittkowski, N. Nardetto1, P. Bendjoya, P. Berio, P. Cruzal\\`ebes, P. Stee, R. G. Petrov, R. van Boekel, R. Waters, S. Lagarde, S. Robbe-Dubois, S. Wolf, Th. Henning, V. G\\'amez Rosas, V. Hocd\\'e, W. C. Danchi, W. Jaffe","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-12-20T17:29:24Z","title":"The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.10695","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":"sha256:0f78ab0775c8a5ef7eab90067e10d27612976f206af3fbf7b9c83a60e50a7ce9","target":"record","created_at":"2026-07-05T04:04:28Z","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":"e69576d29478da6a0c9e050d629c009dcca2ae11092c5195b8d11c4d70e95973","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-12-20T17:29:24Z","title_canon_sha256":"f03884d6c4bcd99817f4cda0c2d829eac5bcbbba614548181126b94498afeeeb"},"schema_version":"1.0","source":{"id":"2112.10695","kind":"arxiv","version":1}},"canonical_sha256":"2f712884e8ce3ef985f91d92e9b17b5dd58a0b513692af3c851ce884cc6a46e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f712884e8ce3ef985f91d92e9b17b5dd58a0b513692af3c851ce884cc6a46e5","first_computed_at":"2026-07-05T04:04:28.536180Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:04:28.536180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fgeDZNvOGoB8LojdhwpEJ53kK185OTc36x5EJL7B0g+kXg3e96W8AyEKuq1u4gwYsttNCtfx6uS3eQUdPDZzAw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:04:28.536619Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.10695","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f78ab0775c8a5ef7eab90067e10d27612976f206af3fbf7b9c83a60e50a7ce9","sha256:1e89a049d4dd4e06adba51e9bb87a4b5473cc5d320fa6d99bfccb708f4ef2693"],"state_sha256":"a41d6542263ff2f905004e2402b2047dd7042438d4855bd6e3cac4c708614786"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ig//edX7LFPzm3GH2qCLFUn85pqzO5BAONlYD7fcMz9DfHGMF++JjAN4m2DeDz4WPlI7wb8TpbuVA02rKeGNCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T07:32:16.598721Z","bundle_sha256":"0b4898ecd6804fc70b9490e78fb6af3f7ab6cffe98694207bfccbd6d2a0450dd"}}