{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:TOSVFE7RRIEHPCPA2GRBFQVCL3","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":"6e988de27b7712810de6cfecb58fae95845b51eb0eef564c53bf39d001fbab06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-22T13:43:30Z","title_canon_sha256":"0df0100bfcce5b71842e1d20fcc3dc7251cd51d1eead238487726e46442f69b7"},"schema_version":"1.0","source":{"id":"1006.4292","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.4292","created_at":"2026-05-18T02:06:43Z"},{"alias_kind":"arxiv_version","alias_value":"1006.4292v1","created_at":"2026-05-18T02:06:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.4292","created_at":"2026-05-18T02:06:43Z"},{"alias_kind":"pith_short_12","alias_value":"TOSVFE7RRIEH","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TOSVFE7RRIEHPCPA","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TOSVFE7R","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:346175a4fd3e43ad71af528f9ab576d14d0151f037bd0d426b603c858b8c9eb5","target":"graph","created_at":"2026-05-18T02:06:43Z","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":"Star formation is regulated through a variety of feedback processes. In this study, we treat feedback by metal injection and a UV background as well as by X-ray irradiation. Our aim is to investigate whether star formation is significantly affected when the ISM of a proto-galaxxy enjoys different metallicities and when a star forming cloud resides in the vicinity of a strong X-ray source. We perform cosmological Enzo simulations with a detailed treatment of non-zero metallicity chemistry and thermal balance. We also perform FLASH simulations with embedded Lagrangian sink particles of a collaps","authors_text":"Aycin Aykutalp, Marco Spaans, Seyit Hocuk","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-22T13:43:30Z","title":"The impact of metallicity and X-rays on star formation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.4292","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:b1cc8c4fa640fdda3ce60351be2991766efdb4fb89ff494c943df8a300d0c207","target":"record","created_at":"2026-05-18T02:06:43Z","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":"6e988de27b7712810de6cfecb58fae95845b51eb0eef564c53bf39d001fbab06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-06-22T13:43:30Z","title_canon_sha256":"0df0100bfcce5b71842e1d20fcc3dc7251cd51d1eead238487726e46442f69b7"},"schema_version":"1.0","source":{"id":"1006.4292","kind":"arxiv","version":1}},"canonical_sha256":"9ba55293f18a087789e0d1a212c2a25ed2c5520fd0f4c2d8054dd93f017f54ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ba55293f18a087789e0d1a212c2a25ed2c5520fd0f4c2d8054dd93f017f54ce","first_computed_at":"2026-05-18T02:06:43.685633Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:43.685633Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Kf1uC5gslVJzSJOmCQ3vdeTcI2tPB3aX/eFzrt4bPcNAGBfO4cZeeFNX0R+va/rzjb7nhhyAsWwWWOKtXVdQBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:43.686410Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.4292","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b1cc8c4fa640fdda3ce60351be2991766efdb4fb89ff494c943df8a300d0c207","sha256:346175a4fd3e43ad71af528f9ab576d14d0151f037bd0d426b603c858b8c9eb5"],"state_sha256":"a9501dba2e9470b0896ea3257c56dbfda44608a98293c9685d43b80182894827"}