{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:ZCFCFYMJMPKAUNLNHJYRKYUP6H","short_pith_number":"pith:ZCFCFYMJ","schema_version":"1.0","canonical_sha256":"c88a22e18963d40a356d3a7115628ff1c96a10ec72cae6263a63ee5e85c93a63","source":{"kind":"arxiv","id":"2106.12947","version":2},"attestation_state":"computed","paper":{"title":"First MATISSE L-band observations of HD 179218. Is the inner 10 au region rich in carbon dust particles?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A.Bensberg, A.Jones, A. Matter, A.Meilland, A.Soulain, B. Lopez, C.A.Hummel, C.Dominik, C.Leinert, C.Paladini, D.Schertl, E.Dartois, E.Habart, E.Kokoulina, E.Pantin, F.Allouche, F.Bettonvil, F.Millour, F.Vakili, G.Weigelt, G.Yoffe, G.Zins, I.Percheron, J.-C. Augereau, J.Drevon, J.Duprat, J.Hron, J.Leftley, J.Varga, J.W.Isbell, J.Woillez, K.-H.Hofmann, K.Meisenheimer, L.B.F.M.Waters, L.Klarmann, L.Labadie, M.Dannhoff, M.Delbo, M.Heininger, M.Hogerheijde, M.Lehmitz, M.Wittkowski, N.Ysard, P.Abraham, P.Antonelli, P.Berio, P.Bristow, P.Cruzal\\`ebes, Ph.Stee, R.G.Petrov, R.van Boekel, S.Lagarde, S.Robbe-Dubois, S.Wolf, Th.Henning, U.Beckmann, U.Graser, V.G\\'amez Rosas, V.Hocd\\'e, W.C.Danchi, W.Jaffe","submitted_at":"2021-06-24T12:15:53Z","abstract_excerpt":"Carbon is one of the most abundant components in the Universe. While silicates have been the main focus of solid phase studies in protoplanetary discs (PPDs), little is known about the solid carbon content especially in the planet-forming regions ($\\sim $0.1 to 10 au). Fortunately, several refractory carbonaceous species present C-H bonds (such as hydrogenated nano-diamond and amorphous carbon as well as polycyclic aromatic hydrocarbons (PAHs)), which generate infrared (IR) features that can be used to trace the solid carbon reservoirs. The new mid-IR instrument MATISSE, installed at the Very "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2106.12947","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-06-24T12:15:53Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"572b1e5454ae72b573bf0339b5f1ccb430220bff355e7b5f008b228c61ea09e5","abstract_canon_sha256":"6c7f2e6cee0c23c01cfcebf81de48a12b0cf91dcf0a3b6f1de5617086724fcb1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:04:55.465702Z","signature_b64":"vQkwG+uWxiVfqSxjF34vimW5clLlH578DOm6bODVdnFvNuNsd+99CULay3xZy5TBaTWZYD2RqvALpCngQc3SCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c88a22e18963d40a356d3a7115628ff1c96a10ec72cae6263a63ee5e85c93a63","last_reissued_at":"2026-07-05T03:04:55.465289Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:04:55.465289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"First MATISSE L-band observations of HD 179218. Is the inner 10 au region rich in carbon dust particles?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A.Bensberg, A.Jones, A. Matter, A.Meilland, A.Soulain, B. Lopez, C.A.Hummel, C.Dominik, C.Leinert, C.Paladini, D.Schertl, E.Dartois, E.Habart, E.Kokoulina, E.Pantin, F.Allouche, F.Bettonvil, F.Millour, F.Vakili, G.Weigelt, G.Yoffe, G.Zins, I.Percheron, J.-C. Augereau, J.Drevon, J.Duprat, J.Hron, J.Leftley, J.Varga, J.W.Isbell, J.Woillez, K.-H.Hofmann, K.Meisenheimer, L.B.F.M.Waters, L.Klarmann, L.Labadie, M.Dannhoff, M.Delbo, M.Heininger, M.Hogerheijde, M.Lehmitz, M.Wittkowski, N.Ysard, P.Abraham, P.Antonelli, P.Berio, P.Bristow, P.Cruzal\\`ebes, Ph.Stee, R.G.Petrov, R.van Boekel, S.Lagarde, S.Robbe-Dubois, S.Wolf, Th.Henning, U.Beckmann, U.Graser, V.G\\'amez Rosas, V.Hocd\\'e, W.C.Danchi, W.Jaffe","submitted_at":"2021-06-24T12:15:53Z","abstract_excerpt":"Carbon is one of the most abundant components in the Universe. While silicates have been the main focus of solid phase studies in protoplanetary discs (PPDs), little is known about the solid carbon content especially in the planet-forming regions ($\\sim $0.1 to 10 au). Fortunately, several refractory carbonaceous species present C-H bonds (such as hydrogenated nano-diamond and amorphous carbon as well as polycyclic aromatic hydrocarbons (PAHs)), which generate infrared (IR) features that can be used to trace the solid carbon reservoirs. The new mid-IR instrument MATISSE, installed at the Very "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.12947","kind":"arxiv","version":2},"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/2106.12947/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2106.12947","created_at":"2026-07-05T03:04:55.465363+00:00"},{"alias_kind":"arxiv_version","alias_value":"2106.12947v2","created_at":"2026-07-05T03:04:55.465363+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.12947","created_at":"2026-07-05T03:04:55.465363+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZCFCFYMJMPKA","created_at":"2026-07-05T03:04:55.465363+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZCFCFYMJMPKAUNLN","created_at":"2026-07-05T03:04:55.465363+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZCFCFYMJ","created_at":"2026-07-05T03:04:55.465363+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H","json":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H.json","graph_json":"https://pith.science/api/pith-number/ZCFCFYMJMPKAUNLNHJYRKYUP6H/graph.json","events_json":"https://pith.science/api/pith-number/ZCFCFYMJMPKAUNLNHJYRKYUP6H/events.json","paper":"https://pith.science/paper/ZCFCFYMJ"},"agent_actions":{"view_html":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H","download_json":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H.json","view_paper":"https://pith.science/paper/ZCFCFYMJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2106.12947&json=true","fetch_graph":"https://pith.science/api/pith-number/ZCFCFYMJMPKAUNLNHJYRKYUP6H/graph.json","fetch_events":"https://pith.science/api/pith-number/ZCFCFYMJMPKAUNLNHJYRKYUP6H/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H/action/storage_attestation","attest_author":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H/action/author_attestation","sign_citation":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H/action/citation_signature","submit_replication":"https://pith.science/pith/ZCFCFYMJMPKAUNLNHJYRKYUP6H/action/replication_record"}},"created_at":"2026-07-05T03:04:55.465363+00:00","updated_at":"2026-07-05T03:04:55.465363+00:00"}