{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TEHBJ4FQQFCIJUACYTWEIEZ4KX","short_pith_number":"pith:TEHBJ4FQ","canonical_record":{"source":{"id":"1501.03083","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-13T17:26:22Z","cross_cats_sorted":[],"title_canon_sha256":"12620d2059e08f2239980fa7b3618a5d968a0163f5548350f20ef64aef4cd7f2","abstract_canon_sha256":"5eb1734e5442d6a8899705e9b2c79aa87f33382330e01b20aa00d0385986fbe6"},"schema_version":"1.0"},"canonical_sha256":"990e14f0b0814484d002c4ec44133c55d389715826fdab6bb3adb51a3b4460d6","source":{"kind":"arxiv","id":"1501.03083","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.03083","created_at":"2026-05-18T01:41:11Z"},{"alias_kind":"arxiv_version","alias_value":"1501.03083v1","created_at":"2026-05-18T01:41:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.03083","created_at":"2026-05-18T01:41:11Z"},{"alias_kind":"pith_short_12","alias_value":"TEHBJ4FQQFCI","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TEHBJ4FQQFCIJUAC","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TEHBJ4FQ","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TEHBJ4FQQFCIJUACYTWEIEZ4KX","target":"record","payload":{"canonical_record":{"source":{"id":"1501.03083","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-13T17:26:22Z","cross_cats_sorted":[],"title_canon_sha256":"12620d2059e08f2239980fa7b3618a5d968a0163f5548350f20ef64aef4cd7f2","abstract_canon_sha256":"5eb1734e5442d6a8899705e9b2c79aa87f33382330e01b20aa00d0385986fbe6"},"schema_version":"1.0"},"canonical_sha256":"990e14f0b0814484d002c4ec44133c55d389715826fdab6bb3adb51a3b4460d6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:11.315622Z","signature_b64":"8fcCavCK5Tg7r1e7jiZaTuddO/BbiLrCAag4g7+mEL8lB0aP5DqY/Y3Ksl8oCjYEhdxH40j4Q0faJcKDA6B+Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"990e14f0b0814484d002c4ec44133c55d389715826fdab6bb3adb51a3b4460d6","last_reissued_at":"2026-05-18T01:41:11.314951Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:11.314951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.03083","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OccB3Wix3aQ2ZuNerMcF23RcHw6GzeoOMsGh78ZBuZjGMbQbsjyhf3zWJS8+OUSUMfoEvg7WcQlyc8CQKMzgCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:18:10.983187Z"},"content_sha256":"8fd75e4208bf8b3840ef94a8c7a58c6c5c716fb1e1725f679c4fb5ddf47cc339","schema_version":"1.0","event_id":"sha256:8fd75e4208bf8b3840ef94a8c7a58c6c5c716fb1e1725f679c4fb5ddf47cc339"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TEHBJ4FQQFCIJUACYTWEIEZ4KX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Effect of Environment on Milky Way-mass galaxies in a Constrained Simulation of the Local Group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Cecilia Scannapieco, Gustavo Yepes, Matthias Steinmetz, Peter Creasey, Sebastian E. Nuza, Stefan Gottloeber","submitted_at":"2015-01-13T17:26:22Z","abstract_excerpt":"In this letter we present, for the first time, a study of star formation rate, gas fraction and galaxy morphology of a constrained simulation of the Milky Way (MW) and Andromeda (M31) galaxies, compared to other MW-mass galaxies. By combining with unconstrained simulations we cover a sufficient volume to compare these galaxies environmental densities ranging from the field to that of the Local Group (LG). This is particularly relevant as it has been shown that, quite generally, galaxy properties depend intimately upon their environment, most prominently when galaxies in clusters are compared t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.03083","kind":"arxiv","version":1},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Otd8vlQzmbVtZOhT/H0KUQMuwjYT1+l6IJOBQmj4KENzH7HV3jcXnqRG3Ox8lDkvwQj8Dcl6bhM/yKY9nQDCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:18:10.983840Z"},"content_sha256":"c1659dfd439c4041a4d6c1fa2c9e949f7f81e5fdd4ba00e8d03d561675875b4a","schema_version":"1.0","event_id":"sha256:c1659dfd439c4041a4d6c1fa2c9e949f7f81e5fdd4ba00e8d03d561675875b4a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TEHBJ4FQQFCIJUACYTWEIEZ4KX/bundle.json","state_url":"https://pith.science/pith/TEHBJ4FQQFCIJUACYTWEIEZ4KX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TEHBJ4FQQFCIJUACYTWEIEZ4KX/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":"2026-05-25T23:18:10Z","links":{"resolver":"https://pith.science/pith/TEHBJ4FQQFCIJUACYTWEIEZ4KX","bundle":"https://pith.science/pith/TEHBJ4FQQFCIJUACYTWEIEZ4KX/bundle.json","state":"https://pith.science/pith/TEHBJ4FQQFCIJUACYTWEIEZ4KX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TEHBJ4FQQFCIJUACYTWEIEZ4KX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TEHBJ4FQQFCIJUACYTWEIEZ4KX","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":"5eb1734e5442d6a8899705e9b2c79aa87f33382330e01b20aa00d0385986fbe6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-13T17:26:22Z","title_canon_sha256":"12620d2059e08f2239980fa7b3618a5d968a0163f5548350f20ef64aef4cd7f2"},"schema_version":"1.0","source":{"id":"1501.03083","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.03083","created_at":"2026-05-18T01:41:11Z"},{"alias_kind":"arxiv_version","alias_value":"1501.03083v1","created_at":"2026-05-18T01:41:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.03083","created_at":"2026-05-18T01:41:11Z"},{"alias_kind":"pith_short_12","alias_value":"TEHBJ4FQQFCI","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TEHBJ4FQQFCIJUAC","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TEHBJ4FQ","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:c1659dfd439c4041a4d6c1fa2c9e949f7f81e5fdd4ba00e8d03d561675875b4a","target":"graph","created_at":"2026-05-18T01:41:11Z","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":"In this letter we present, for the first time, a study of star formation rate, gas fraction and galaxy morphology of a constrained simulation of the Milky Way (MW) and Andromeda (M31) galaxies, compared to other MW-mass galaxies. By combining with unconstrained simulations we cover a sufficient volume to compare these galaxies environmental densities ranging from the field to that of the Local Group (LG). This is particularly relevant as it has been shown that, quite generally, galaxy properties depend intimately upon their environment, most prominently when galaxies in clusters are compared t","authors_text":"Cecilia Scannapieco, Gustavo Yepes, Matthias Steinmetz, Peter Creasey, Sebastian E. Nuza, Stefan Gottloeber","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-13T17:26:22Z","title":"The Effect of Environment on Milky Way-mass galaxies in a Constrained Simulation of the Local Group"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.03083","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":"sha256:8fd75e4208bf8b3840ef94a8c7a58c6c5c716fb1e1725f679c4fb5ddf47cc339","target":"record","created_at":"2026-05-18T01:41:11Z","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":"5eb1734e5442d6a8899705e9b2c79aa87f33382330e01b20aa00d0385986fbe6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-13T17:26:22Z","title_canon_sha256":"12620d2059e08f2239980fa7b3618a5d968a0163f5548350f20ef64aef4cd7f2"},"schema_version":"1.0","source":{"id":"1501.03083","kind":"arxiv","version":1}},"canonical_sha256":"990e14f0b0814484d002c4ec44133c55d389715826fdab6bb3adb51a3b4460d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"990e14f0b0814484d002c4ec44133c55d389715826fdab6bb3adb51a3b4460d6","first_computed_at":"2026-05-18T01:41:11.314951Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:11.314951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8fcCavCK5Tg7r1e7jiZaTuddO/BbiLrCAag4g7+mEL8lB0aP5DqY/Y3Ksl8oCjYEhdxH40j4Q0faJcKDA6B+Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:11.315622Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.03083","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8fd75e4208bf8b3840ef94a8c7a58c6c5c716fb1e1725f679c4fb5ddf47cc339","sha256:c1659dfd439c4041a4d6c1fa2c9e949f7f81e5fdd4ba00e8d03d561675875b4a"],"state_sha256":"c9324cff9fecedb21a1ab5f9f3db3be3b37054ae232482f1761e923d7cd12c92"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WqBoLxDVuJtOpQ1rADXx0PqvNnppuUnMoUmFxjyN1UEaelVSssaNnwbCb1hzk44qKVT1AKzsmmO3IpH7CwR/Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T23:18:10.986556Z","bundle_sha256":"4ad2a0f6c8b539cf6e4d3356eb46a70c8e238d627757bd3c1cebcf6ac3690cf0"}}