{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:H22S6TMLWOSXQQHRIRU7WZMKIX","short_pith_number":"pith:H22S6TML","canonical_record":{"source":{"id":"1509.00030","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-31T20:19:15Z","cross_cats_sorted":[],"title_canon_sha256":"e169f6212d73ec77ee87431b3633ccef9eab47977f008857d65a7a68b8efc540","abstract_canon_sha256":"ef10320f04c64713086e7fb941345327cf9e613c1a384d4d05cbbec80abae5ab"},"schema_version":"1.0"},"canonical_sha256":"3eb52f4d8bb3a57840f14469fb658a45de6c7edd57a600fa8f25039386a6567b","source":{"kind":"arxiv","id":"1509.00030","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00030","created_at":"2026-05-18T01:25:38Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00030v2","created_at":"2026-05-18T01:25:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00030","created_at":"2026-05-18T01:25:38Z"},{"alias_kind":"pith_short_12","alias_value":"H22S6TMLWOSX","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"H22S6TMLWOSXQQHR","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"H22S6TML","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:H22S6TMLWOSXQQHRIRU7WZMKIX","target":"record","payload":{"canonical_record":{"source":{"id":"1509.00030","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-31T20:19:15Z","cross_cats_sorted":[],"title_canon_sha256":"e169f6212d73ec77ee87431b3633ccef9eab47977f008857d65a7a68b8efc540","abstract_canon_sha256":"ef10320f04c64713086e7fb941345327cf9e613c1a384d4d05cbbec80abae5ab"},"schema_version":"1.0"},"canonical_sha256":"3eb52f4d8bb3a57840f14469fb658a45de6c7edd57a600fa8f25039386a6567b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:25:38.456163Z","signature_b64":"2OE1ntWUaFvLMUWce6V9L0+o8iLKA7jjKEYtGbK5YIDoEuyE+Yjsh7KUsryhZ6qGIFuv6J+w60K0B3CFwE3LCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3eb52f4d8bb3a57840f14469fb658a45de6c7edd57a600fa8f25039386a6567b","last_reissued_at":"2026-05-18T01:25:38.455556Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:25:38.455556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.00030","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":"2026-05-18T01:25:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mXYRjgfLoYRCzKNV2Tmk468C6iXJU7WN8dN7T6ACvSWLu0tcXkyOepGoTacS2X5U2viFM6HKpb7Y6kxhHsqeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:46:38.301822Z"},"content_sha256":"18f15cd3032a422024a3bae3cfc9204d0c9687563dce40a418ef64df3c0b87ac","schema_version":"1.0","event_id":"sha256:18f15cd3032a422024a3bae3cfc9204d0c9687563dce40a418ef64df3c0b87ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:H22S6TMLWOSXQQHRIRU7WZMKIX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Assembly of Dwarf Galaxies in Clusters and their Efficient Formation of Globular Clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Annalisa Pillepich, Dylan Nelson, Lars Hernquist, Laura V. Sales, Mark Vogelsberger, Paul Torrey, Pouria A. Mistani, Ruben Sanchez-Janssen, Vicente Rodriguez-Gomez","submitted_at":"2015-08-31T20:19:15Z","abstract_excerpt":"Galaxy clusters contain a large population of low mass dwarf elliptical galaxies whose exact origin is unclear: their colors, structural properties and kinematics differ substantially from those of dwarf irregulars in the field. We use the Illustris cosmological simulation to study differences in the assembly paths of dwarf galaxies (3e8 < M_*/M_sun < 1e10) according to their environment. We find that cluster dwarfs achieve their maximum total and stellar mass on average ~ 8 and ~ 4.5 Gyr ago (or redshifts z = 1.0 and z = 0.4, respectively), around the time of infall into the clusters. In cont"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00030","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":""},"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":"2026-05-18T01:25:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bJZnjOh3xbmqMVwieHMDlskQZvyB593bcfJ644Tseoys2d3ikPhcwGS9MaOJ+p8GitP6gMOB0KRDzUtF8AnHCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:46:38.302544Z"},"content_sha256":"d2aa3eccc01f2014a99a3daea56fe6d995de07be629aa49980883af9677002dc","schema_version":"1.0","event_id":"sha256:d2aa3eccc01f2014a99a3daea56fe6d995de07be629aa49980883af9677002dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H22S6TMLWOSXQQHRIRU7WZMKIX/bundle.json","state_url":"https://pith.science/pith/H22S6TMLWOSXQQHRIRU7WZMKIX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H22S6TMLWOSXQQHRIRU7WZMKIX/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":"2026-05-25T09:46:38Z","links":{"resolver":"https://pith.science/pith/H22S6TMLWOSXQQHRIRU7WZMKIX","bundle":"https://pith.science/pith/H22S6TMLWOSXQQHRIRU7WZMKIX/bundle.json","state":"https://pith.science/pith/H22S6TMLWOSXQQHRIRU7WZMKIX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H22S6TMLWOSXQQHRIRU7WZMKIX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:H22S6TMLWOSXQQHRIRU7WZMKIX","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":"ef10320f04c64713086e7fb941345327cf9e613c1a384d4d05cbbec80abae5ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-31T20:19:15Z","title_canon_sha256":"e169f6212d73ec77ee87431b3633ccef9eab47977f008857d65a7a68b8efc540"},"schema_version":"1.0","source":{"id":"1509.00030","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00030","created_at":"2026-05-18T01:25:38Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00030v2","created_at":"2026-05-18T01:25:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00030","created_at":"2026-05-18T01:25:38Z"},{"alias_kind":"pith_short_12","alias_value":"H22S6TMLWOSX","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"H22S6TMLWOSXQQHR","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"H22S6TML","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:d2aa3eccc01f2014a99a3daea56fe6d995de07be629aa49980883af9677002dc","target":"graph","created_at":"2026-05-18T01:25:38Z","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":"Galaxy clusters contain a large population of low mass dwarf elliptical galaxies whose exact origin is unclear: their colors, structural properties and kinematics differ substantially from those of dwarf irregulars in the field. We use the Illustris cosmological simulation to study differences in the assembly paths of dwarf galaxies (3e8 < M_*/M_sun < 1e10) according to their environment. We find that cluster dwarfs achieve their maximum total and stellar mass on average ~ 8 and ~ 4.5 Gyr ago (or redshifts z = 1.0 and z = 0.4, respectively), around the time of infall into the clusters. In cont","authors_text":"Annalisa Pillepich, Dylan Nelson, Lars Hernquist, Laura V. Sales, Mark Vogelsberger, Paul Torrey, Pouria A. Mistani, Ruben Sanchez-Janssen, Vicente Rodriguez-Gomez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-31T20:19:15Z","title":"On the Assembly of Dwarf Galaxies in Clusters and their Efficient Formation of Globular Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00030","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":"sha256:18f15cd3032a422024a3bae3cfc9204d0c9687563dce40a418ef64df3c0b87ac","target":"record","created_at":"2026-05-18T01:25:38Z","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":"ef10320f04c64713086e7fb941345327cf9e613c1a384d4d05cbbec80abae5ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-31T20:19:15Z","title_canon_sha256":"e169f6212d73ec77ee87431b3633ccef9eab47977f008857d65a7a68b8efc540"},"schema_version":"1.0","source":{"id":"1509.00030","kind":"arxiv","version":2}},"canonical_sha256":"3eb52f4d8bb3a57840f14469fb658a45de6c7edd57a600fa8f25039386a6567b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3eb52f4d8bb3a57840f14469fb658a45de6c7edd57a600fa8f25039386a6567b","first_computed_at":"2026-05-18T01:25:38.455556Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:25:38.455556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2OE1ntWUaFvLMUWce6V9L0+o8iLKA7jjKEYtGbK5YIDoEuyE+Yjsh7KUsryhZ6qGIFuv6J+w60K0B3CFwE3LCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:25:38.456163Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.00030","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:18f15cd3032a422024a3bae3cfc9204d0c9687563dce40a418ef64df3c0b87ac","sha256:d2aa3eccc01f2014a99a3daea56fe6d995de07be629aa49980883af9677002dc"],"state_sha256":"0051637a21717718d375ad6476b00f4c139db8274b4f543ad08161a3d64e2fee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y21pcRd2rN73kVC49TORpTODZCAHlPQCm42A6KsNrimisrXGWLEgYsSNTEUzshx6HJ1CcUhFDM8B2PE+/nQTBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T09:46:38.306158Z","bundle_sha256":"27ef98a6cb9997cce0f1e46f06021cedcc047dfeab3aa907ec0d5bb70142ec2b"}}