{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:WX3EX4CXJGK6DX7XLRTTUCKTPQ","short_pith_number":"pith:WX3EX4CX","schema_version":"1.0","canonical_sha256":"b5f64bf0574995e1dff75c673a09537c2dbc5c42b56fa765dbdd5b093ba11520","source":{"kind":"arxiv","id":"1903.05242","version":1},"attestation_state":"computed","paper":{"title":"Variability in the Assembly of Protostellar Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Agata Karska, Dan M. Watson, Doug Johnstone, Hector Arce, Ian Stephens, Jacob White, Jennifer Hatchell, Jens Kauffmann, Joel D. Green, John Tobin, Klaus Pontoppidan, Mike Dunham, Neal J. Evans, Robert A. Gutermuth, Sarah Sadavoy, Stella Offner, Tom Megeath, Will Fischer, Yao-Lun Yang, Zhi-Yun Li","submitted_at":"2019-03-12T22:31:46Z","abstract_excerpt":"Understanding the collapse of clouds and the formation of protoplanetary disks is essential to understanding the formation of stars and planets. Infall and accretion, the mass-aggregation processes that occur at envelope and disk scales, drive the dynamical evolution of protostars. While the observations of protostars at different stages constrain their evolutionary tracks, the impact of variability due to accretion bursts on dynamical and chemical evolution of the source is largely unknown. The lasting effects on protostellar envelopes and disks are tracked through multi-wavelength and time d"},"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":"1903.05242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-12T22:31:46Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"title_canon_sha256":"bd2c1b12a4e977adae329960acb9176641d479d1d04ad3a0201e374d6ba56a69","abstract_canon_sha256":"9b361fdec6cdbbc721ab47a4809e9496b7b1191c39e5fde91b01b10caba21451"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:24.973100Z","signature_b64":"L1a2tneueZQszkLs5QB4PfVbc7+06TeQlVTinUTNBa4FD8wSDtlGk+8d8t4wOoszTWmChzyeRnDSNum30nydBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5f64bf0574995e1dff75c673a09537c2dbc5c42b56fa765dbdd5b093ba11520","last_reissued_at":"2026-05-17T23:51:24.972559Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:24.972559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Variability in the Assembly of Protostellar Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Agata Karska, Dan M. Watson, Doug Johnstone, Hector Arce, Ian Stephens, Jacob White, Jennifer Hatchell, Jens Kauffmann, Joel D. Green, John Tobin, Klaus Pontoppidan, Mike Dunham, Neal J. Evans, Robert A. Gutermuth, Sarah Sadavoy, Stella Offner, Tom Megeath, Will Fischer, Yao-Lun Yang, Zhi-Yun Li","submitted_at":"2019-03-12T22:31:46Z","abstract_excerpt":"Understanding the collapse of clouds and the formation of protoplanetary disks is essential to understanding the formation of stars and planets. Infall and accretion, the mass-aggregation processes that occur at envelope and disk scales, drive the dynamical evolution of protostars. While the observations of protostars at different stages constrain their evolutionary tracks, the impact of variability due to accretion bursts on dynamical and chemical evolution of the source is largely unknown. The lasting effects on protostellar envelopes and disks are tracked through multi-wavelength and time d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.05242","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1903.05242","created_at":"2026-05-17T23:51:24.972646+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.05242v1","created_at":"2026-05-17T23:51:24.972646+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.05242","created_at":"2026-05-17T23:51:24.972646+00:00"},{"alias_kind":"pith_short_12","alias_value":"WX3EX4CXJGK6","created_at":"2026-05-18T12:33:33.725879+00:00"},{"alias_kind":"pith_short_16","alias_value":"WX3EX4CXJGK6DX7X","created_at":"2026-05-18T12:33:33.725879+00:00"},{"alias_kind":"pith_short_8","alias_value":"WX3EX4CX","created_at":"2026-05-18T12:33:33.725879+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/WX3EX4CXJGK6DX7XLRTTUCKTPQ","json":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ.json","graph_json":"https://pith.science/api/pith-number/WX3EX4CXJGK6DX7XLRTTUCKTPQ/graph.json","events_json":"https://pith.science/api/pith-number/WX3EX4CXJGK6DX7XLRTTUCKTPQ/events.json","paper":"https://pith.science/paper/WX3EX4CX"},"agent_actions":{"view_html":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ","download_json":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ.json","view_paper":"https://pith.science/paper/WX3EX4CX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.05242&json=true","fetch_graph":"https://pith.science/api/pith-number/WX3EX4CXJGK6DX7XLRTTUCKTPQ/graph.json","fetch_events":"https://pith.science/api/pith-number/WX3EX4CXJGK6DX7XLRTTUCKTPQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ/action/storage_attestation","attest_author":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ/action/author_attestation","sign_citation":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ/action/citation_signature","submit_replication":"https://pith.science/pith/WX3EX4CXJGK6DX7XLRTTUCKTPQ/action/replication_record"}},"created_at":"2026-05-17T23:51:24.972646+00:00","updated_at":"2026-05-17T23:51:24.972646+00:00"}