{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7IXHSHOXRQGSCULNUACEJHWIJN","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":"02f8d0a21ddab5deee2f35053cb2c17fb5983209dc2f96e9bf926a19c04a9c0b","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-06T20:00:52Z","title_canon_sha256":"7ec2820dc7171b2940e938745d9b0b58289227797a6b97432962ea16aaceffec"},"schema_version":"1.0","source":{"id":"1507.01599","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01599","created_at":"2026-05-18T01:35:44Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01599v1","created_at":"2026-05-18T01:35:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01599","created_at":"2026-05-18T01:35:44Z"},{"alias_kind":"pith_short_12","alias_value":"7IXHSHOXRQGS","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7IXHSHOXRQGSCULN","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7IXHSHOX","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:8396f1c925b1d1aa00b0f6af01e38e1a47174545bd73cc9c2aedc3eb87405112","target":"graph","created_at":"2026-05-18T01:35:44Z","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 use semi-analytic models and cosmological merger trees to provide the initial conditions for multi-merger numerical hydrodynamic simulations, and exploit these simulations to explore the effect of galaxy interaction and merging on star formation (SF). We compute numerical realisations of twelve merger trees from z=1.5 to z=0. We include the effects of the large hot gaseous halo around all galaxies, following recent obervations and predictions of galaxy formation models. We find that including the hot gaseous halo has a number of important effects. Firstly, as expected, the star formation ra","authors_text":"Andrea V. Maccio, Benjamin P. Moster, Rachel S. Somerville, Rahul Kannan, Wouter Karman","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-06T20:00:52Z","title":"Star formation in mergers with cosmologically motivated initial conditions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01599","kind":"arxiv","version":1},"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":"sha256:8fec0b36b06ad35d8b06d49c1e58eb0e91b7a68bff58e6a73cb03f51a4b44f5f","target":"record","created_at":"2026-05-18T01:35:44Z","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":"02f8d0a21ddab5deee2f35053cb2c17fb5983209dc2f96e9bf926a19c04a9c0b","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-06T20:00:52Z","title_canon_sha256":"7ec2820dc7171b2940e938745d9b0b58289227797a6b97432962ea16aaceffec"},"schema_version":"1.0","source":{"id":"1507.01599","kind":"arxiv","version":1}},"canonical_sha256":"fa2e791dd78c0d21516da004449ec84b4d418765394228c6ccc2b4b96b15a5dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa2e791dd78c0d21516da004449ec84b4d418765394228c6ccc2b4b96b15a5dc","first_computed_at":"2026-05-18T01:35:44.704660Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:44.704660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7yV8Gc58I1Ci9qOmpdRTfUbaxOD8AJ6Gzmw4Y+pQ1EuyFiIB/pFxqCaN8j8g9P+U3F8y0urGBJL8WXKTUO2CAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:44.705141Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.01599","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8fec0b36b06ad35d8b06d49c1e58eb0e91b7a68bff58e6a73cb03f51a4b44f5f","sha256:8396f1c925b1d1aa00b0f6af01e38e1a47174545bd73cc9c2aedc3eb87405112"],"state_sha256":"128ef7a99de9764389455303829dfee31be5cc0a390eedea95bf7c03b66ea005"}