{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:I5VGF2VCDLFUSC4UYIUH7WID34","short_pith_number":"pith:I5VGF2VC","schema_version":"1.0","canonical_sha256":"476a62eaa21acb490b94c2287fd903df09d490a7ba908b4687f30d524621bdee","source":{"kind":"arxiv","id":"1506.08829","version":2},"attestation_state":"computed","paper":{"title":"The effects of metallicity, UV radiation and non-equilibrium chemistry in high-resolution simulations of galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alexander J. Richings, Joop Schaye","submitted_at":"2015-06-29T20:00:46Z","abstract_excerpt":"We present a series of hydrodynamic simulations of isolated galaxies with stellar mass of $10^{9} \\, \\rm{M}_{\\odot}$. The models use a resolution of $750 \\, \\rm{M}_{\\odot}$ per particle and include a treatment for the full non-equilibrium chemical evolution of ions and molecules (157 species in total), along with gas cooling rates computed self-consistently using the non-equilibrium abundances. We compare these to simulations evolved using cooling rates calculated assuming chemical (including ionisation) equilibrium, and we consider a wide range of metallicities and UV radiation fields, includ"},"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":"1506.08829","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-29T20:00:46Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"bc980aa269c4b4262a2a88f28571888fc882a8b92bcda9bac10957cdf175dd25","abstract_canon_sha256":"159af6af3c49c3bb38675052e433fd45b9043fd0667843061654f57d3dd409cc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:36.366979Z","signature_b64":"8/1WOAJ8l907b4ejFnMNnfMuH7y7J8kSCWz+7XqdzKbuKr6F2EJYKi7N0B2UyaPuFOshxFSTakzJqEm/qAmYCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"476a62eaa21acb490b94c2287fd903df09d490a7ba908b4687f30d524621bdee","last_reissued_at":"2026-05-18T01:20:36.366438Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:36.366438Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The effects of metallicity, UV radiation and non-equilibrium chemistry in high-resolution simulations of galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alexander J. Richings, Joop Schaye","submitted_at":"2015-06-29T20:00:46Z","abstract_excerpt":"We present a series of hydrodynamic simulations of isolated galaxies with stellar mass of $10^{9} \\, \\rm{M}_{\\odot}$. The models use a resolution of $750 \\, \\rm{M}_{\\odot}$ per particle and include a treatment for the full non-equilibrium chemical evolution of ions and molecules (157 species in total), along with gas cooling rates computed self-consistently using the non-equilibrium abundances. We compare these to simulations evolved using cooling rates calculated assuming chemical (including ionisation) equilibrium, and we consider a wide range of metallicities and UV radiation fields, includ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08829","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":"1506.08829","created_at":"2026-05-18T01:20:36.366495+00:00"},{"alias_kind":"arxiv_version","alias_value":"1506.08829v2","created_at":"2026-05-18T01:20:36.366495+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08829","created_at":"2026-05-18T01:20:36.366495+00:00"},{"alias_kind":"pith_short_12","alias_value":"I5VGF2VCDLFU","created_at":"2026-05-18T12:29:25.134429+00:00"},{"alias_kind":"pith_short_16","alias_value":"I5VGF2VCDLFUSC4U","created_at":"2026-05-18T12:29:25.134429+00:00"},{"alias_kind":"pith_short_8","alias_value":"I5VGF2VC","created_at":"2026-05-18T12:29:25.134429+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/I5VGF2VCDLFUSC4UYIUH7WID34","json":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34.json","graph_json":"https://pith.science/api/pith-number/I5VGF2VCDLFUSC4UYIUH7WID34/graph.json","events_json":"https://pith.science/api/pith-number/I5VGF2VCDLFUSC4UYIUH7WID34/events.json","paper":"https://pith.science/paper/I5VGF2VC"},"agent_actions":{"view_html":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34","download_json":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34.json","view_paper":"https://pith.science/paper/I5VGF2VC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1506.08829&json=true","fetch_graph":"https://pith.science/api/pith-number/I5VGF2VCDLFUSC4UYIUH7WID34/graph.json","fetch_events":"https://pith.science/api/pith-number/I5VGF2VCDLFUSC4UYIUH7WID34/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34/action/timestamp_anchor","attest_storage":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34/action/storage_attestation","attest_author":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34/action/author_attestation","sign_citation":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34/action/citation_signature","submit_replication":"https://pith.science/pith/I5VGF2VCDLFUSC4UYIUH7WID34/action/replication_record"}},"created_at":"2026-05-18T01:20:36.366495+00:00","updated_at":"2026-05-18T01:20:36.366495+00:00"}