{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:COLO73UHLSTOVIN2P66XNZCMLX","short_pith_number":"pith:COLO73UH","canonical_record":{"source":{"id":"2001.06225","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-01-17T10:18:26Z","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"title_canon_sha256":"a718fcef2dbcff791ef602a9d1c3248f63b43d9f643f7a6cba1310e104bcd1c2","abstract_canon_sha256":"18d180d4830cfc7a0e619e61f6383ac90075b9ee8b42613065d2c700bc76fd2f"},"schema_version":"1.0"},"canonical_sha256":"1396efee875ca6eaa1ba7fbd76e44c5ddbbeb4e854010753c24123807766a525","source":{"kind":"arxiv","id":"2001.06225","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.06225","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"arxiv_version","alias_value":"2001.06225v3","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.06225","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"pith_short_12","alias_value":"COLO73UHLSTO","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"pith_short_16","alias_value":"COLO73UHLSTOVIN2","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"pith_short_8","alias_value":"COLO73UH","created_at":"2026-07-05T00:55:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:COLO73UHLSTOVIN2P66XNZCMLX","target":"record","payload":{"canonical_record":{"source":{"id":"2001.06225","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-01-17T10:18:26Z","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"title_canon_sha256":"a718fcef2dbcff791ef602a9d1c3248f63b43d9f643f7a6cba1310e104bcd1c2","abstract_canon_sha256":"18d180d4830cfc7a0e619e61f6383ac90075b9ee8b42613065d2c700bc76fd2f"},"schema_version":"1.0"},"canonical_sha256":"1396efee875ca6eaa1ba7fbd76e44c5ddbbeb4e854010753c24123807766a525","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:55:08.790527Z","signature_b64":"dYixZgKN+DMrgQH/FvncmPEgQjC1OaUdacFdA2OXEXfRbPpsGTl73LDlpej0yXIsnMbbWEn6lRNd7xbkm/ZhDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1396efee875ca6eaa1ba7fbd76e44c5ddbbeb4e854010753c24123807766a525","last_reissued_at":"2026-07-05T00:55:08.790078Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:55:08.790078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.06225","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:55:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g9yzxLVIcW7qA6aNWvLMysZ2WPi4WrbHgoyR+EDwvR5bD22LhWoMMxT42YbfBJoWIE5VE61GziixNENP/PwrCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T07:17:04.464421Z"},"content_sha256":"b98bbba68661e75e900e849dc57826b54785c82b71f1bc4c834d4cfec88d2f0b","schema_version":"1.0","event_id":"sha256:b98bbba68661e75e900e849dc57826b54785c82b71f1bc4c834d4cfec88d2f0b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:COLO73UHLSTOVIN2P66XNZCMLX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Massive discs around low-mass stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Cassandra Hall, Duncan Forgan, Emma Albertini, Farzana Meru, James Cadman, James E. Owen, Ken Rice, Thomas J. Haworth","submitted_at":"2020-01-17T10:18:26Z","abstract_excerpt":"We use a suite of SPH simulations to investigate the susceptibility of protoplanetary discs to the effects of self-gravity as a function of star-disc properties. We also include passive irradiation from the host star using different models for the stellar luminosities. The critical disc-to-star mass ratio for axisymmetry (for which we produce criteria) increases significantly for low-mass stars. This could have important consequences for increasing the potential mass reservoir in a proto Trappist-1 system, since even the efficient Ormel et al. (2017) formation model will be influenced by proce"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.06225","kind":"arxiv","version":3},"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/2001.06225/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":"2026-07-05T00:55:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AfEDbX8m04fDu648by8rPTiDFj8SKfxX0BU28Urf52euztD8tMrfCFqi/U6XBxdMwW0HzZQnb1EnsVN2tU6hAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T07:17:04.464931Z"},"content_sha256":"de6ae17e45f52ca452c998aa1b9dcb585be3d9edfcad39ae1f7ce44673158871","schema_version":"1.0","event_id":"sha256:de6ae17e45f52ca452c998aa1b9dcb585be3d9edfcad39ae1f7ce44673158871"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/COLO73UHLSTOVIN2P66XNZCMLX/bundle.json","state_url":"https://pith.science/pith/COLO73UHLSTOVIN2P66XNZCMLX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/COLO73UHLSTOVIN2P66XNZCMLX/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":"2026-08-03T07:17:04Z","links":{"resolver":"https://pith.science/pith/COLO73UHLSTOVIN2P66XNZCMLX","bundle":"https://pith.science/pith/COLO73UHLSTOVIN2P66XNZCMLX/bundle.json","state":"https://pith.science/pith/COLO73UHLSTOVIN2P66XNZCMLX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/COLO73UHLSTOVIN2P66XNZCMLX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:COLO73UHLSTOVIN2P66XNZCMLX","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":"18d180d4830cfc7a0e619e61f6383ac90075b9ee8b42613065d2c700bc76fd2f","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-01-17T10:18:26Z","title_canon_sha256":"a718fcef2dbcff791ef602a9d1c3248f63b43d9f643f7a6cba1310e104bcd1c2"},"schema_version":"1.0","source":{"id":"2001.06225","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.06225","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"arxiv_version","alias_value":"2001.06225v3","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.06225","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"pith_short_12","alias_value":"COLO73UHLSTO","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"pith_short_16","alias_value":"COLO73UHLSTOVIN2","created_at":"2026-07-05T00:55:08Z"},{"alias_kind":"pith_short_8","alias_value":"COLO73UH","created_at":"2026-07-05T00:55:08Z"}],"graph_snapshots":[{"event_id":"sha256:de6ae17e45f52ca452c998aa1b9dcb585be3d9edfcad39ae1f7ce44673158871","target":"graph","created_at":"2026-07-05T00:55:08Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2001.06225/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use a suite of SPH simulations to investigate the susceptibility of protoplanetary discs to the effects of self-gravity as a function of star-disc properties. We also include passive irradiation from the host star using different models for the stellar luminosities. The critical disc-to-star mass ratio for axisymmetry (for which we produce criteria) increases significantly for low-mass stars. This could have important consequences for increasing the potential mass reservoir in a proto Trappist-1 system, since even the efficient Ormel et al. (2017) formation model will be influenced by proce","authors_text":"Cassandra Hall, Duncan Forgan, Emma Albertini, Farzana Meru, James Cadman, James E. Owen, Ken Rice, Thomas J. Haworth","cross_cats":["astro-ph.EP","astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-01-17T10:18:26Z","title":"Massive discs around low-mass stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.06225","kind":"arxiv","version":3},"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:b98bbba68661e75e900e849dc57826b54785c82b71f1bc4c834d4cfec88d2f0b","target":"record","created_at":"2026-07-05T00:55:08Z","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":"18d180d4830cfc7a0e619e61f6383ac90075b9ee8b42613065d2c700bc76fd2f","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-01-17T10:18:26Z","title_canon_sha256":"a718fcef2dbcff791ef602a9d1c3248f63b43d9f643f7a6cba1310e104bcd1c2"},"schema_version":"1.0","source":{"id":"2001.06225","kind":"arxiv","version":3}},"canonical_sha256":"1396efee875ca6eaa1ba7fbd76e44c5ddbbeb4e854010753c24123807766a525","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1396efee875ca6eaa1ba7fbd76e44c5ddbbeb4e854010753c24123807766a525","first_computed_at":"2026-07-05T00:55:08.790078Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:55:08.790078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dYixZgKN+DMrgQH/FvncmPEgQjC1OaUdacFdA2OXEXfRbPpsGTl73LDlpej0yXIsnMbbWEn6lRNd7xbkm/ZhDA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:55:08.790527Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.06225","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b98bbba68661e75e900e849dc57826b54785c82b71f1bc4c834d4cfec88d2f0b","sha256:de6ae17e45f52ca452c998aa1b9dcb585be3d9edfcad39ae1f7ce44673158871"],"state_sha256":"6953bdf3bd78f1b05626bcafc2acac46a3726071586d0705fc2d93809d9aa14a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nRP9R1GB9NUMg/Uciq8x9t3HVPE2y+odd/oHu5mqGqCpyDfunLqZK1Bn1+N/T8GG36C3RWd8poFZF2//8xZtAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T07:17:04.472044Z","bundle_sha256":"7755aa16906fe80cad7b5d3eb74314fd565f734a176ad47c8aea2e634f99ff37"}}