{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LHPHFBWYEGPWJ7GCRVVW2K2UMA","short_pith_number":"pith:LHPHFBWY","canonical_record":{"source":{"id":"2409.04624","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-09-06T21:23:05Z","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"title_canon_sha256":"612b0edb65f43b58487b487346ad631dd69fa0ef121c131f5af5acee8eea221f","abstract_canon_sha256":"84bb02d66ba0107b2206d73ff39dda7e061870a7b5c11d0a1a79994d02a98653"},"schema_version":"1.0"},"canonical_sha256":"59de7286d8219f64fcc28d6b6d2b54601b633a8808deecd0fe7976828de8f2b3","source":{"kind":"arxiv","id":"2409.04624","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.04624","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"arxiv_version","alias_value":"2409.04624v2","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.04624","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"pith_short_12","alias_value":"LHPHFBWYEGPW","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"pith_short_16","alias_value":"LHPHFBWYEGPWJ7GC","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"pith_short_8","alias_value":"LHPHFBWY","created_at":"2026-07-05T10:32:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LHPHFBWYEGPWJ7GCRVVW2K2UMA","target":"record","payload":{"canonical_record":{"source":{"id":"2409.04624","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-09-06T21:23:05Z","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"title_canon_sha256":"612b0edb65f43b58487b487346ad631dd69fa0ef121c131f5af5acee8eea221f","abstract_canon_sha256":"84bb02d66ba0107b2206d73ff39dda7e061870a7b5c11d0a1a79994d02a98653"},"schema_version":"1.0"},"canonical_sha256":"59de7286d8219f64fcc28d6b6d2b54601b633a8808deecd0fe7976828de8f2b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:32:30.200197Z","signature_b64":"CCsi+3gRyOYkqta27O+OwUAaKd1eFXREL1mChK/KDAE+8tIU4ktBO/u2dDoYprRekbAQiPb9s5NLHXJg+GzeAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59de7286d8219f64fcc28d6b6d2b54601b633a8808deecd0fe7976828de8f2b3","last_reissued_at":"2026-07-05T10:32:30.199299Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:32:30.199299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.04624","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:32:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1yFNkIfP7lmZX8q0kdhqqjTfPBgdY0VR/ev/LaRkWWi+m9h+dj5Wp4NkxWd/YSPzR3dZJAkh1NEm+aWivWzACg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T22:24:25.732649Z"},"content_sha256":"fc9fa14af9a0ca3f853362b648c71eeffb74e9530a1c31403174fbbb01e1bfad","schema_version":"1.0","event_id":"sha256:fc9fa14af9a0ca3f853362b648c71eeffb74e9530a1c31403174fbbb01e1bfad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LHPHFBWYEGPWJ7GCRVVW2K2UMA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identification of a turnover in the initial mass function of a young stellar cluster down to 0.5 M$_{J}$","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":"Carlo Manara, Doug Johnstone, Eleonora Fiorellino, Gabriele Cugno, Jarron Leisenring, Klaus Hodapp, Marcia Rieke, Massimo Robberto, Matthew De Furio, Michael R. Meyer, Roberta Raileanu, Sierk van Terwisga, Thomas Greene, Thomas Roellig","submitted_at":"2024-09-06T21:23:05Z","abstract_excerpt":"A successful theory of star formation should predict the number of objects as a function of their mass produced through star-forming events. Previous studies in star-forming regions and the solar neighborhood identify a mass function increasing from the hydrogen-burning limit down to about 10 M$_{J}$. Theory predicts a limit to the fragmentation process, providing a natural turnover in the mass function down to the opacity limit of turbulent fragmentation thought to be near 1-10 M$_{J}$. Programs to date have not been sensitive enough to probe the hypothesized opacity limit of fragmentation. W"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.04624","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/2409.04624/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":"2026-07-05T10:32:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ou3z2YRtSxc2HTm99oQMd+2hkapqkzdDezteN3T+dYPBMYyp8d8u+mM9Zj279TmXliLupiP6ryMQSfUT66MHBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T22:24:25.733167Z"},"content_sha256":"d92c2bceab70fbb10ca0e062941ba778ea2b59cc5d4a320686b442d088f0c52f","schema_version":"1.0","event_id":"sha256:d92c2bceab70fbb10ca0e062941ba778ea2b59cc5d4a320686b442d088f0c52f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LHPHFBWYEGPWJ7GCRVVW2K2UMA/bundle.json","state_url":"https://pith.science/pith/LHPHFBWYEGPWJ7GCRVVW2K2UMA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LHPHFBWYEGPWJ7GCRVVW2K2UMA/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":"2026-08-10T22:24:25Z","links":{"resolver":"https://pith.science/pith/LHPHFBWYEGPWJ7GCRVVW2K2UMA","bundle":"https://pith.science/pith/LHPHFBWYEGPWJ7GCRVVW2K2UMA/bundle.json","state":"https://pith.science/pith/LHPHFBWYEGPWJ7GCRVVW2K2UMA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LHPHFBWYEGPWJ7GCRVVW2K2UMA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LHPHFBWYEGPWJ7GCRVVW2K2UMA","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":"84bb02d66ba0107b2206d73ff39dda7e061870a7b5c11d0a1a79994d02a98653","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":"2024-09-06T21:23:05Z","title_canon_sha256":"612b0edb65f43b58487b487346ad631dd69fa0ef121c131f5af5acee8eea221f"},"schema_version":"1.0","source":{"id":"2409.04624","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.04624","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"arxiv_version","alias_value":"2409.04624v2","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.04624","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"pith_short_12","alias_value":"LHPHFBWYEGPW","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"pith_short_16","alias_value":"LHPHFBWYEGPWJ7GC","created_at":"2026-07-05T10:32:30Z"},{"alias_kind":"pith_short_8","alias_value":"LHPHFBWY","created_at":"2026-07-05T10:32:30Z"}],"graph_snapshots":[{"event_id":"sha256:d92c2bceab70fbb10ca0e062941ba778ea2b59cc5d4a320686b442d088f0c52f","target":"graph","created_at":"2026-07-05T10:32:30Z","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/2409.04624/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A successful theory of star formation should predict the number of objects as a function of their mass produced through star-forming events. Previous studies in star-forming regions and the solar neighborhood identify a mass function increasing from the hydrogen-burning limit down to about 10 M$_{J}$. Theory predicts a limit to the fragmentation process, providing a natural turnover in the mass function down to the opacity limit of turbulent fragmentation thought to be near 1-10 M$_{J}$. Programs to date have not been sensitive enough to probe the hypothesized opacity limit of fragmentation. W","authors_text":"Carlo Manara, Doug Johnstone, Eleonora Fiorellino, Gabriele Cugno, Jarron Leisenring, Klaus Hodapp, Marcia Rieke, Massimo Robberto, Matthew De Furio, Michael R. Meyer, Roberta Raileanu, Sierk van Terwisga, Thomas Greene, Thomas Roellig","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":"2024-09-06T21:23:05Z","title":"Identification of a turnover in the initial mass function of a young stellar cluster down to 0.5 M$_{J}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.04624","kind":"arxiv","version":2},"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:fc9fa14af9a0ca3f853362b648c71eeffb74e9530a1c31403174fbbb01e1bfad","target":"record","created_at":"2026-07-05T10:32:30Z","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":"84bb02d66ba0107b2206d73ff39dda7e061870a7b5c11d0a1a79994d02a98653","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":"2024-09-06T21:23:05Z","title_canon_sha256":"612b0edb65f43b58487b487346ad631dd69fa0ef121c131f5af5acee8eea221f"},"schema_version":"1.0","source":{"id":"2409.04624","kind":"arxiv","version":2}},"canonical_sha256":"59de7286d8219f64fcc28d6b6d2b54601b633a8808deecd0fe7976828de8f2b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59de7286d8219f64fcc28d6b6d2b54601b633a8808deecd0fe7976828de8f2b3","first_computed_at":"2026-07-05T10:32:30.199299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:32:30.199299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CCsi+3gRyOYkqta27O+OwUAaKd1eFXREL1mChK/KDAE+8tIU4ktBO/u2dDoYprRekbAQiPb9s5NLHXJg+GzeAA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:32:30.200197Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.04624","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc9fa14af9a0ca3f853362b648c71eeffb74e9530a1c31403174fbbb01e1bfad","sha256:d92c2bceab70fbb10ca0e062941ba778ea2b59cc5d4a320686b442d088f0c52f"],"state_sha256":"4c24616195194f85efe55ed1cb18267665dc5b1564044233d2354e36c954832e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kxOUZpDqSTTCQgZGuVJ/KXAss32kXSdFVyZTMuDmhFUTn3MKD4Eaa4FjCTMmwj7URga9vy1H5gPELmpDNEhSCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T22:24:25.736967Z","bundle_sha256":"ff871a2cb1de96821240ce457c22ff1cb7864ef2703ae8a710dfce5c74205139"}}