{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:RZGNS3XQBAIXW2MKGKIL6I7SGP","short_pith_number":"pith:RZGNS3XQ","canonical_record":{"source":{"id":"1905.00909","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-02T18:00:06Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"0d2907da2f2b64c6dfef8904bd65a35c2a13327c571396b0217c4d290a2052ae","abstract_canon_sha256":"f844ebf710c75150dfe126052736092009be884c4fd0646ca42a009eee46bb34"},"schema_version":"1.0"},"canonical_sha256":"8e4cd96ef008117b698a3290bf23f233c7828f078b65e306b8f8f3ea5affe9f3","source":{"kind":"arxiv","id":"1905.00909","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.00909","created_at":"2026-05-17T23:47:08Z"},{"alias_kind":"arxiv_version","alias_value":"1905.00909v1","created_at":"2026-05-17T23:47:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.00909","created_at":"2026-05-17T23:47:08Z"},{"alias_kind":"pith_short_12","alias_value":"RZGNS3XQBAIX","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RZGNS3XQBAIXW2MK","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RZGNS3XQ","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:RZGNS3XQBAIXW2MKGKIL6I7SGP","target":"record","payload":{"canonical_record":{"source":{"id":"1905.00909","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-02T18:00:06Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"0d2907da2f2b64c6dfef8904bd65a35c2a13327c571396b0217c4d290a2052ae","abstract_canon_sha256":"f844ebf710c75150dfe126052736092009be884c4fd0646ca42a009eee46bb34"},"schema_version":"1.0"},"canonical_sha256":"8e4cd96ef008117b698a3290bf23f233c7828f078b65e306b8f8f3ea5affe9f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:08.262368Z","signature_b64":"Azysl5LznocFvSwMtY5o75TbgDON8fS3z18URAx2F+Lb/C7Ub5zWj2VXsgsTH70vc9S7BWRWl/o0Z0ym/8vJAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e4cd96ef008117b698a3290bf23f233c7828f078b65e306b8f8f3ea5affe9f3","last_reissued_at":"2026-05-17T23:47:08.261731Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:08.261731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.00909","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":"2026-05-17T23:47:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nt6oNswmaPe5SEJoj7/QlN3VZUMrpTDCJm/aVp8jia9IB3i3G9e7gAxjiw2wWG/T8rDnTcDYxm+Su/k3gDMaDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:57:21.755701Z"},"content_sha256":"8a828949b9f6d2f894b40c2885ba23cfc03d7950d763a5a62a7a2d0dfc585363","schema_version":"1.0","event_id":"sha256:8a828949b9f6d2f894b40c2885ba23cfc03d7950d763a5a62a7a2d0dfc585363"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:RZGNS3XQBAIXW2MKGKIL6I7SGP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A dust and gas cavity in the disc around CQ Tau revealed by ALMA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Andrea Isella, Anna Miotello, Barbara Ercolano, Davide Fedele, David Wilner, Enrico Ragusa, Giovanni Dipierro, Giovanni Rosotti, Giuseppe Lodato, Greta Guidi, Hendrik Linz, John Carpenter, Laura Perez, Leonardo Testi, Luca Ricci, Marco Tazzari, Melissa McClure, M. Giulia Ubeira Gabellini, Myriam Benisty, Nicol\\`as T. Kurtovic, Sean Andrews, Simon Bruderer, Stefano Facchini, Stuartt A. Corder, Thomas Henning, Woojin Kwon","submitted_at":"2019-05-02T18:00:06Z","abstract_excerpt":"The combination of high resolution and sensitivity offered by ALMA is revolutionizing our understanding of protoplanetary discs, as their bulk gas and dust distributions can be studied independently. In this paper we present resolved ALMA observations of the continuum emission ($\\lambda=1.3$ mm) and CO isotopologues ($^{12}$CO, $^{13}$CO, C$^{18}$O $J=2-1$) integrated intensity from the disc around the nearby ($d = 162$ pc), intermediate mass ($M_{\\star}=1.67\\,M_{\\odot}$) pre-main-sequence star CQ Tau. The data show an inner depression in continuum, and in both $^{13}$CO and C$^{18}$O emission"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.00909","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":""},"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":"2026-05-17T23:47:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jD4KHFchbdMvCN7kWvGgRfcWP3wYZ8Lc9kHy/WN8kP7UUntUM256zJOwoWovjy727cxcpfPit/BTma8JaYj0Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:57:21.756397Z"},"content_sha256":"e34f48525269d08b19cf1f00bb651a9e57da11cc84cd2d51de10b6f5a4a11bf8","schema_version":"1.0","event_id":"sha256:e34f48525269d08b19cf1f00bb651a9e57da11cc84cd2d51de10b6f5a4a11bf8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RZGNS3XQBAIXW2MKGKIL6I7SGP/bundle.json","state_url":"https://pith.science/pith/RZGNS3XQBAIXW2MKGKIL6I7SGP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RZGNS3XQBAIXW2MKGKIL6I7SGP/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":"2026-05-26T18:57:21Z","links":{"resolver":"https://pith.science/pith/RZGNS3XQBAIXW2MKGKIL6I7SGP","bundle":"https://pith.science/pith/RZGNS3XQBAIXW2MKGKIL6I7SGP/bundle.json","state":"https://pith.science/pith/RZGNS3XQBAIXW2MKGKIL6I7SGP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RZGNS3XQBAIXW2MKGKIL6I7SGP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:RZGNS3XQBAIXW2MKGKIL6I7SGP","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":"f844ebf710c75150dfe126052736092009be884c4fd0646ca42a009eee46bb34","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-02T18:00:06Z","title_canon_sha256":"0d2907da2f2b64c6dfef8904bd65a35c2a13327c571396b0217c4d290a2052ae"},"schema_version":"1.0","source":{"id":"1905.00909","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.00909","created_at":"2026-05-17T23:47:08Z"},{"alias_kind":"arxiv_version","alias_value":"1905.00909v1","created_at":"2026-05-17T23:47:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.00909","created_at":"2026-05-17T23:47:08Z"},{"alias_kind":"pith_short_12","alias_value":"RZGNS3XQBAIX","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RZGNS3XQBAIXW2MK","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RZGNS3XQ","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:e34f48525269d08b19cf1f00bb651a9e57da11cc84cd2d51de10b6f5a4a11bf8","target":"graph","created_at":"2026-05-17T23:47:08Z","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":"The combination of high resolution and sensitivity offered by ALMA is revolutionizing our understanding of protoplanetary discs, as their bulk gas and dust distributions can be studied independently. In this paper we present resolved ALMA observations of the continuum emission ($\\lambda=1.3$ mm) and CO isotopologues ($^{12}$CO, $^{13}$CO, C$^{18}$O $J=2-1$) integrated intensity from the disc around the nearby ($d = 162$ pc), intermediate mass ($M_{\\star}=1.67\\,M_{\\odot}$) pre-main-sequence star CQ Tau. The data show an inner depression in continuum, and in both $^{13}$CO and C$^{18}$O emission","authors_text":"Andrea Isella, Anna Miotello, Barbara Ercolano, Davide Fedele, David Wilner, Enrico Ragusa, Giovanni Dipierro, Giovanni Rosotti, Giuseppe Lodato, Greta Guidi, Hendrik Linz, John Carpenter, Laura Perez, Leonardo Testi, Luca Ricci, Marco Tazzari, Melissa McClure, M. Giulia Ubeira Gabellini, Myriam Benisty, Nicol\\`as T. Kurtovic, Sean Andrews, Simon Bruderer, Stefano Facchini, Stuartt A. Corder, Thomas Henning, Woojin Kwon","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-02T18:00:06Z","title":"A dust and gas cavity in the disc around CQ Tau revealed by ALMA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.00909","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":"sha256:8a828949b9f6d2f894b40c2885ba23cfc03d7950d763a5a62a7a2d0dfc585363","target":"record","created_at":"2026-05-17T23:47:08Z","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":"f844ebf710c75150dfe126052736092009be884c4fd0646ca42a009eee46bb34","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-02T18:00:06Z","title_canon_sha256":"0d2907da2f2b64c6dfef8904bd65a35c2a13327c571396b0217c4d290a2052ae"},"schema_version":"1.0","source":{"id":"1905.00909","kind":"arxiv","version":1}},"canonical_sha256":"8e4cd96ef008117b698a3290bf23f233c7828f078b65e306b8f8f3ea5affe9f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e4cd96ef008117b698a3290bf23f233c7828f078b65e306b8f8f3ea5affe9f3","first_computed_at":"2026-05-17T23:47:08.261731Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:08.261731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Azysl5LznocFvSwMtY5o75TbgDON8fS3z18URAx2F+Lb/C7Ub5zWj2VXsgsTH70vc9S7BWRWl/o0Z0ym/8vJAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:08.262368Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.00909","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a828949b9f6d2f894b40c2885ba23cfc03d7950d763a5a62a7a2d0dfc585363","sha256:e34f48525269d08b19cf1f00bb651a9e57da11cc84cd2d51de10b6f5a4a11bf8"],"state_sha256":"7dea704859a066cb9594fc9c1c61bdc3dacf161129c3e09bf2f112442cb35c0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cHhyhQ7jd/WnJCGNZqUzHCkYnwsEatmPXnJnQsaS0Kju3G51IsinAgIk8GQVbRgSTBqhQ/ZQIlRFO55AClu1AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:57:21.760140Z","bundle_sha256":"2a501a4f5fb25dd80f6469982493fa32305a2e1c4e94307097f2292189c15ca9"}}