{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:5SL7YHA2QSTRMMCXVFG7RUE5UL","short_pith_number":"pith:5SL7YHA2","schema_version":"1.0","canonical_sha256":"ec97fc1c1a84a7163057a94df8d09da2f525cd20bb5a300ee82c1b1bfbe38e36","source":{"kind":"arxiv","id":"1805.07992","version":2},"attestation_state":"computed","paper":{"title":"Radiation hydrodynamics simulations of photoevaporation of protoplanetary disks II: Metallicity dependence of UV and X-ray photoevaporation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Hideko Nomura, Naoki Yoshida, Riouhei Nakatani, Rolf Kuiper, Takashi Hosokawa","submitted_at":"2018-05-21T11:28:05Z","abstract_excerpt":"We perform a suite of radiation hydrodynamics simulations of photoevaporating disks with varying the metallicity in a wide range of $10^{-3} \\, Z_\\odot \\leq Z \\leq 10^{0.5} \\, Z_\\odot $. We follow the disk evolution for over $\\sim 5000$ years by solving hydrodynamics, radiative transfer, and non-equilibrium chemistry. Our chemistry model is updated from the first paper of this series by adding X-ray ionization and heating. We study the metallicity dependence of the disk photoevaporation rate and examine the importance of X-ray radiation. In the fiducial case with solar metallicity, including t"},"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":"1805.07992","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-21T11:28:05Z","cross_cats_sorted":[],"title_canon_sha256":"7c88aba4f37d0e46ec9994206d31e0b7078f28bd8ef9ae13b0520599baec75ff","abstract_canon_sha256":"a3d5027e35875fb4fff143089dbeb0b72ef65d20d94a60c403dd3c5931bd967d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:48.802069Z","signature_b64":"ixkTdkQ+ZlYxqptdermwPRrAKS4zqwuYd5Fu9IFo+fUiIiOH5gVMk/3whoh6sK6/yCi14FSbjTu2x373peBPBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec97fc1c1a84a7163057a94df8d09da2f525cd20bb5a300ee82c1b1bfbe38e36","last_reissued_at":"2026-05-18T00:03:48.801503Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:48.801503Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Radiation hydrodynamics simulations of photoevaporation of protoplanetary disks II: Metallicity dependence of UV and X-ray photoevaporation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Hideko Nomura, Naoki Yoshida, Riouhei Nakatani, Rolf Kuiper, Takashi Hosokawa","submitted_at":"2018-05-21T11:28:05Z","abstract_excerpt":"We perform a suite of radiation hydrodynamics simulations of photoevaporating disks with varying the metallicity in a wide range of $10^{-3} \\, Z_\\odot \\leq Z \\leq 10^{0.5} \\, Z_\\odot $. We follow the disk evolution for over $\\sim 5000$ years by solving hydrodynamics, radiative transfer, and non-equilibrium chemistry. Our chemistry model is updated from the first paper of this series by adding X-ray ionization and heating. We study the metallicity dependence of the disk photoevaporation rate and examine the importance of X-ray radiation. In the fiducial case with solar metallicity, including t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07992","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":""},"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":"1805.07992","created_at":"2026-05-18T00:03:48.801580+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.07992v2","created_at":"2026-05-18T00:03:48.801580+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07992","created_at":"2026-05-18T00:03:48.801580+00:00"},{"alias_kind":"pith_short_12","alias_value":"5SL7YHA2QSTR","created_at":"2026-05-18T12:32:08.215937+00:00"},{"alias_kind":"pith_short_16","alias_value":"5SL7YHA2QSTRMMCX","created_at":"2026-05-18T12:32:08.215937+00:00"},{"alias_kind":"pith_short_8","alias_value":"5SL7YHA2","created_at":"2026-05-18T12:32:08.215937+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/5SL7YHA2QSTRMMCXVFG7RUE5UL","json":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL.json","graph_json":"https://pith.science/api/pith-number/5SL7YHA2QSTRMMCXVFG7RUE5UL/graph.json","events_json":"https://pith.science/api/pith-number/5SL7YHA2QSTRMMCXVFG7RUE5UL/events.json","paper":"https://pith.science/paper/5SL7YHA2"},"agent_actions":{"view_html":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL","download_json":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL.json","view_paper":"https://pith.science/paper/5SL7YHA2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.07992&json=true","fetch_graph":"https://pith.science/api/pith-number/5SL7YHA2QSTRMMCXVFG7RUE5UL/graph.json","fetch_events":"https://pith.science/api/pith-number/5SL7YHA2QSTRMMCXVFG7RUE5UL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL/action/storage_attestation","attest_author":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL/action/author_attestation","sign_citation":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL/action/citation_signature","submit_replication":"https://pith.science/pith/5SL7YHA2QSTRMMCXVFG7RUE5UL/action/replication_record"}},"created_at":"2026-05-18T00:03:48.801580+00:00","updated_at":"2026-05-18T00:03:48.801580+00:00"}