{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:665Z5GJ5GS43WHPH45IULFNXBH","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":"e4abc900c2620fca42007a397737339efc05313e340bd9565d390870f613efaf","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-29T21:00:48Z","title_canon_sha256":"adedf8de43829e4e1c4e3d26c5d5f01c311116e6f238c9851e41ed90722a1631"},"schema_version":"1.0","source":{"id":"1512.08791","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.08791","created_at":"2026-05-18T01:04:21Z"},{"alias_kind":"arxiv_version","alias_value":"1512.08791v2","created_at":"2026-05-18T01:04:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.08791","created_at":"2026-05-18T01:04:21Z"},{"alias_kind":"pith_short_12","alias_value":"665Z5GJ5GS43","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"665Z5GJ5GS43WHPH","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"665Z5GJ5","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:ea9a9f8c04c7ba908c3e798fbe23a41a46dbc2c2de8c2abb9c08dbb93a4a496e","target":"graph","created_at":"2026-05-18T01:04:21Z","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"},"paper":{"abstract_excerpt":"We study the evolution of giant clumps in high-z disc galaxies using AMR cosmological simulations at redshifts z=6-1. Our sample consists of 34 galaxies, of halo masses 10^{11}-10^{12}M_s at z=2, run with and without radiation pressure (RP) feedback from young stars. While RP has little effect on the sizes and global stability of discs, it reduces the amount of star-forming gas by a factor of ~2, leading to a decrease in stellar mass by a similar factor by z~2. Both samples undergo violent disc instability (VDI) and form giant clumps of masses 10^7-10^9M_s at a similar rate, though RP signific","authors_text":"Avishai Dekel, Colin DeGraf, Daniel Ceverino, Joel Primack, Nir Mandelker, Yicheng Guo","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-29T21:00:48Z","title":"Giant Clumps in Simulated High-z Galaxies: Properties, Evolution and Dependence on Feedback"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.08791","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":"sha256:7e163ddd04f6fc1d237254eaafb5b82fb50e180460942988525212f927d2d214","target":"record","created_at":"2026-05-18T01:04:21Z","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":"e4abc900c2620fca42007a397737339efc05313e340bd9565d390870f613efaf","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-29T21:00:48Z","title_canon_sha256":"adedf8de43829e4e1c4e3d26c5d5f01c311116e6f238c9851e41ed90722a1631"},"schema_version":"1.0","source":{"id":"1512.08791","kind":"arxiv","version":2}},"canonical_sha256":"f7bb9e993d34b9bb1de7e7514595b709ce985af98b5df6706c941707cd65f158","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7bb9e993d34b9bb1de7e7514595b709ce985af98b5df6706c941707cd65f158","first_computed_at":"2026-05-18T01:04:21.775614Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:21.775614Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2hf9rENAov6eBKIrHNFrq57KUnXe8+1q9xMxjRCXekkZeW7WxZGeRSEcAds67GyBZMks3RzzEaMdL9HBoPn1Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:21.776242Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.08791","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7e163ddd04f6fc1d237254eaafb5b82fb50e180460942988525212f927d2d214","sha256:ea9a9f8c04c7ba908c3e798fbe23a41a46dbc2c2de8c2abb9c08dbb93a4a496e"],"state_sha256":"64463a6e382b0d3c0369d534efa4b7be50cf3a6bd66482e7510d1f3799c69f1d"}