{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2B5CCCWGGTQENNBX2KRXB2VB5C","short_pith_number":"pith:2B5CCCWG","canonical_record":{"source":{"id":"2003.00289","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-29T16:12:18Z","cross_cats_sorted":[],"title_canon_sha256":"00f9a8833006469f64826795115d39327e425293ee0fddde0156f24fc1b5925d","abstract_canon_sha256":"748c0aba78a3453f3043dff44a64444a4a2a2cf3e334429e658dba09f7593ef5"},"schema_version":"1.0"},"canonical_sha256":"d07a210ac634e046b437d2a370eaa1e8ad69e7ce5a9a63f321aa4c932ab75b89","source":{"kind":"arxiv","id":"2003.00289","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.00289","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"2003.00289v2","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.00289","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"2B5CCCWGGTQE","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"pith_short_16","alias_value":"2B5CCCWGGTQENNBX","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"pith_short_8","alias_value":"2B5CCCWG","created_at":"2026-07-05T00:57:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2B5CCCWGGTQENNBX2KRXB2VB5C","target":"record","payload":{"canonical_record":{"source":{"id":"2003.00289","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-29T16:12:18Z","cross_cats_sorted":[],"title_canon_sha256":"00f9a8833006469f64826795115d39327e425293ee0fddde0156f24fc1b5925d","abstract_canon_sha256":"748c0aba78a3453f3043dff44a64444a4a2a2cf3e334429e658dba09f7593ef5"},"schema_version":"1.0"},"canonical_sha256":"d07a210ac634e046b437d2a370eaa1e8ad69e7ce5a9a63f321aa4c932ab75b89","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:57:18.454400Z","signature_b64":"DVKe5+mIEaD7JBKiEOKZFYb5+5S7Futx+qzIs7qryfgC+H6t0xLFGyd0wlb3G9OjgTl2yTuQtPLJQAJxUESjDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d07a210ac634e046b437d2a370eaa1e8ad69e7ce5a9a63f321aa4c932ab75b89","last_reissued_at":"2026-07-05T00:57:18.453887Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:57:18.453887Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.00289","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o1FFA7FRMYntHrmT1+3AtUtDWC+B/wbVFWnd3LAaSNwrEihsL9/4UsTmL+Zf8/d3VFUYmu1PHHyuc1lTyT+JDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:58:15.505697Z"},"content_sha256":"d9481c12b47d832a7b8014c912558da3b7e2806ea9f035d8d95dc18d307297ab","schema_version":"1.0","event_id":"sha256:d9481c12b47d832a7b8014c912558da3b7e2806ea9f035d8d95dc18d307297ab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2B5CCCWGGTQENNBX2KRXB2VB5C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interacting galaxies in the IllustrisTNG simulations -- I: Triggered star formation in a cosmological context","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Colin J. Metrow, David R. Patton, Joanna Woo, Jorge Moreno, Kieran D. Wilson, Maan H. Hani, Paul Torrey, Sara L. Ellison, Stuart McAlpine, Westley Brown","submitted_at":"2020-02-29T16:12:18Z","abstract_excerpt":"We use the IllustrisTNG cosmological hydrodynamical simulations to investigate how the specific star formation rates (sSFRs) of massive galaxies $(M_* > 10^{10} M_\\odot)$ depend on the distance to their closest companions. We estimate sSFR enhancements by comparing with control samples that are matched in redshift, stellar mass, local density and isolation, and we restrict our analysis to pairs with stellar mass ratios of 0.1 to 10. At small separations (~15 kpc), the mean sSFR is enhanced by a factor of 2.0 $\\pm$ 0.1 in the flagship (110.7 Mpc)$^3$ simulation (TNG100-1). Statistically signifi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.00289","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2003.00289/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EdHGAJCTvLqIzHu89O/DfP1GeJyMAfvAh1GJsOK9t0kjCnXuXH0dn4WJNG4iQ0dfp1K0Kx3tOogzpSWqI8mABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:58:15.506227Z"},"content_sha256":"c3085fbc3efa5822ec2fe4a99a1830d0363f5b6465d3dfa750ab154b35e46721","schema_version":"1.0","event_id":"sha256:c3085fbc3efa5822ec2fe4a99a1830d0363f5b6465d3dfa750ab154b35e46721"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2B5CCCWGGTQENNBX2KRXB2VB5C/bundle.json","state_url":"https://pith.science/pith/2B5CCCWGGTQENNBX2KRXB2VB5C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2B5CCCWGGTQENNBX2KRXB2VB5C/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-05T14:58:15Z","links":{"resolver":"https://pith.science/pith/2B5CCCWGGTQENNBX2KRXB2VB5C","bundle":"https://pith.science/pith/2B5CCCWGGTQENNBX2KRXB2VB5C/bundle.json","state":"https://pith.science/pith/2B5CCCWGGTQENNBX2KRXB2VB5C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2B5CCCWGGTQENNBX2KRXB2VB5C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2B5CCCWGGTQENNBX2KRXB2VB5C","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":"748c0aba78a3453f3043dff44a64444a4a2a2cf3e334429e658dba09f7593ef5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-29T16:12:18Z","title_canon_sha256":"00f9a8833006469f64826795115d39327e425293ee0fddde0156f24fc1b5925d"},"schema_version":"1.0","source":{"id":"2003.00289","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.00289","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"2003.00289v2","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.00289","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"2B5CCCWGGTQE","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"pith_short_16","alias_value":"2B5CCCWGGTQENNBX","created_at":"2026-07-05T00:57:18Z"},{"alias_kind":"pith_short_8","alias_value":"2B5CCCWG","created_at":"2026-07-05T00:57:18Z"}],"graph_snapshots":[{"event_id":"sha256:c3085fbc3efa5822ec2fe4a99a1830d0363f5b6465d3dfa750ab154b35e46721","target":"graph","created_at":"2026-07-05T00:57:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2003.00289/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use the IllustrisTNG cosmological hydrodynamical simulations to investigate how the specific star formation rates (sSFRs) of massive galaxies $(M_* > 10^{10} M_\\odot)$ depend on the distance to their closest companions. We estimate sSFR enhancements by comparing with control samples that are matched in redshift, stellar mass, local density and isolation, and we restrict our analysis to pairs with stellar mass ratios of 0.1 to 10. At small separations (~15 kpc), the mean sSFR is enhanced by a factor of 2.0 $\\pm$ 0.1 in the flagship (110.7 Mpc)$^3$ simulation (TNG100-1). Statistically signifi","authors_text":"Colin J. Metrow, David R. Patton, Joanna Woo, Jorge Moreno, Kieran D. Wilson, Maan H. Hani, Paul Torrey, Sara L. Ellison, Stuart McAlpine, Westley Brown","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-29T16:12:18Z","title":"Interacting galaxies in the IllustrisTNG simulations -- I: Triggered star formation in a cosmological context"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.00289","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:d9481c12b47d832a7b8014c912558da3b7e2806ea9f035d8d95dc18d307297ab","target":"record","created_at":"2026-07-05T00:57:18Z","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":"748c0aba78a3453f3043dff44a64444a4a2a2cf3e334429e658dba09f7593ef5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-29T16:12:18Z","title_canon_sha256":"00f9a8833006469f64826795115d39327e425293ee0fddde0156f24fc1b5925d"},"schema_version":"1.0","source":{"id":"2003.00289","kind":"arxiv","version":2}},"canonical_sha256":"d07a210ac634e046b437d2a370eaa1e8ad69e7ce5a9a63f321aa4c932ab75b89","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d07a210ac634e046b437d2a370eaa1e8ad69e7ce5a9a63f321aa4c932ab75b89","first_computed_at":"2026-07-05T00:57:18.453887Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:57:18.453887Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DVKe5+mIEaD7JBKiEOKZFYb5+5S7Futx+qzIs7qryfgC+H6t0xLFGyd0wlb3G9OjgTl2yTuQtPLJQAJxUESjDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:57:18.454400Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.00289","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9481c12b47d832a7b8014c912558da3b7e2806ea9f035d8d95dc18d307297ab","sha256:c3085fbc3efa5822ec2fe4a99a1830d0363f5b6465d3dfa750ab154b35e46721"],"state_sha256":"94a35e55095e1157a2d2c238db485703a58c3226317d35687e0996ff125f0c56"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2KPEXGI4lbqyHFTxYCDrmPzbWLTu5z3o797Gduw70dOJQavBBAzpXl8qPZ++8SCUay3izzpd2Bu9/lVQgJxaAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T14:58:15.510466Z","bundle_sha256":"b53ba8d1b40727fa1505f55d5b7dfeb129c4b165be8982218e86af9b7191f653"}}