{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:6UAAIBK22KX5NBZVEMBKJY3DZM","short_pith_number":"pith:6UAAIBK2","canonical_record":{"source":{"id":"1306.5239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-21T20:00:04Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4a84f86cee85c71179e812de9be09d38165ec44764d03b67a9391207dab76127","abstract_canon_sha256":"7f83773cf6970ada7a81f047c0963a312add88192b1aa9572df8fadfe56c7419"},"schema_version":"1.0"},"canonical_sha256":"f50004055ad2afd687352302a4e363cb3d7d43802d79306f62cbd1cd68462f16","source":{"kind":"arxiv","id":"1306.5239","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.5239","created_at":"2026-05-18T01:49:13Z"},{"alias_kind":"arxiv_version","alias_value":"1306.5239v1","created_at":"2026-05-18T01:49:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.5239","created_at":"2026-05-18T01:49:13Z"},{"alias_kind":"pith_short_12","alias_value":"6UAAIBK22KX5","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6UAAIBK22KX5NBZV","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6UAAIBK2","created_at":"2026-05-18T12:27:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:6UAAIBK22KX5NBZVEMBKJY3DZM","target":"record","payload":{"canonical_record":{"source":{"id":"1306.5239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-21T20:00:04Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4a84f86cee85c71179e812de9be09d38165ec44764d03b67a9391207dab76127","abstract_canon_sha256":"7f83773cf6970ada7a81f047c0963a312add88192b1aa9572df8fadfe56c7419"},"schema_version":"1.0"},"canonical_sha256":"f50004055ad2afd687352302a4e363cb3d7d43802d79306f62cbd1cd68462f16","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:49:13.823120Z","signature_b64":"Og4u10hVNnfJlGdYBSHbnH1c9QWcy/xYRQTFoJfd1khnTPcUomTQ9syZFQh/jni21Ha7pfoL8Fyz5OnSSTWSBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f50004055ad2afd687352302a4e363cb3d7d43802d79306f62cbd1cd68462f16","last_reissued_at":"2026-05-18T01:49:13.822636Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:49:13.822636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1306.5239","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":"2026-05-18T01:49:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5YNJy1Ateyn/A8mVPji4kbSxLJsYWJa2gd55gr9Yy0PFwgtuaUPREZDXKSOjZ2nUxeBMz4sK2WykrhREs0vZBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:29:26.281868Z"},"content_sha256":"ccf8bfa86d8719dce797712983a6d1e083cb373d67761a094b1daf8a185d6f68","schema_version":"1.0","event_id":"sha256:ccf8bfa86d8719dce797712983a6d1e083cb373d67761a094b1daf8a185d6f68"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:6UAAIBK22KX5NBZVEMBKJY3DZM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical Abundance Patterns and the Early Environment of Dwarf Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Greg Bryan, Jason Tumlinson, Kathryn V. Johnston, Lauren Corlies","submitted_at":"2013-06-21T20:00:04Z","abstract_excerpt":"Recent observations suggest that abundance pattern differences exist between low metallicity stars in the Milky Way stellar halo and those in the dwarf satellite galaxies. This paper takes a first look at what role the early environment for pre-galactic star formation might have played in shaping these stellar populations. In particular, we consider whether differences in cross-pollution between the progenitors of the stellar halo and the satellites could help to explain the differences in abundance patterns. Using an N-body simulation, we find that the progenitor halos of the main halo are pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.5239","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":"2026-05-18T01:49:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"riRMHSzgGQ7UETMKZhaVv6XyY//HU6MpAVBqzu4SbgV6TVZUxBgnTkcGjEV8b8J9LBRS4Ss8bFT0TN8OpqjAAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:29:26.282219Z"},"content_sha256":"1d16e25bfb14566e8d2a0a3ffdd013a876b7e503a715346a0f7ea9d0fbb2e34c","schema_version":"1.0","event_id":"sha256:1d16e25bfb14566e8d2a0a3ffdd013a876b7e503a715346a0f7ea9d0fbb2e34c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6UAAIBK22KX5NBZVEMBKJY3DZM/bundle.json","state_url":"https://pith.science/pith/6UAAIBK22KX5NBZVEMBKJY3DZM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6UAAIBK22KX5NBZVEMBKJY3DZM/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":"2026-05-31T00:29:26Z","links":{"resolver":"https://pith.science/pith/6UAAIBK22KX5NBZVEMBKJY3DZM","bundle":"https://pith.science/pith/6UAAIBK22KX5NBZVEMBKJY3DZM/bundle.json","state":"https://pith.science/pith/6UAAIBK22KX5NBZVEMBKJY3DZM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6UAAIBK22KX5NBZVEMBKJY3DZM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:6UAAIBK22KX5NBZVEMBKJY3DZM","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":"7f83773cf6970ada7a81f047c0963a312add88192b1aa9572df8fadfe56c7419","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-21T20:00:04Z","title_canon_sha256":"4a84f86cee85c71179e812de9be09d38165ec44764d03b67a9391207dab76127"},"schema_version":"1.0","source":{"id":"1306.5239","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.5239","created_at":"2026-05-18T01:49:13Z"},{"alias_kind":"arxiv_version","alias_value":"1306.5239v1","created_at":"2026-05-18T01:49:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.5239","created_at":"2026-05-18T01:49:13Z"},{"alias_kind":"pith_short_12","alias_value":"6UAAIBK22KX5","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6UAAIBK22KX5NBZV","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6UAAIBK2","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:1d16e25bfb14566e8d2a0a3ffdd013a876b7e503a715346a0f7ea9d0fbb2e34c","target":"graph","created_at":"2026-05-18T01:49:13Z","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":"Recent observations suggest that abundance pattern differences exist between low metallicity stars in the Milky Way stellar halo and those in the dwarf satellite galaxies. This paper takes a first look at what role the early environment for pre-galactic star formation might have played in shaping these stellar populations. In particular, we consider whether differences in cross-pollution between the progenitors of the stellar halo and the satellites could help to explain the differences in abundance patterns. Using an N-body simulation, we find that the progenitor halos of the main halo are pr","authors_text":"Greg Bryan, Jason Tumlinson, Kathryn V. Johnston, Lauren Corlies","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-21T20:00:04Z","title":"Chemical Abundance Patterns and the Early Environment of Dwarf Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.5239","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:ccf8bfa86d8719dce797712983a6d1e083cb373d67761a094b1daf8a185d6f68","target":"record","created_at":"2026-05-18T01:49:13Z","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":"7f83773cf6970ada7a81f047c0963a312add88192b1aa9572df8fadfe56c7419","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-21T20:00:04Z","title_canon_sha256":"4a84f86cee85c71179e812de9be09d38165ec44764d03b67a9391207dab76127"},"schema_version":"1.0","source":{"id":"1306.5239","kind":"arxiv","version":1}},"canonical_sha256":"f50004055ad2afd687352302a4e363cb3d7d43802d79306f62cbd1cd68462f16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f50004055ad2afd687352302a4e363cb3d7d43802d79306f62cbd1cd68462f16","first_computed_at":"2026-05-18T01:49:13.822636Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:49:13.822636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Og4u10hVNnfJlGdYBSHbnH1c9QWcy/xYRQTFoJfd1khnTPcUomTQ9syZFQh/jni21Ha7pfoL8Fyz5OnSSTWSBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:49:13.823120Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.5239","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ccf8bfa86d8719dce797712983a6d1e083cb373d67761a094b1daf8a185d6f68","sha256:1d16e25bfb14566e8d2a0a3ffdd013a876b7e503a715346a0f7ea9d0fbb2e34c"],"state_sha256":"9aec9951b4c4c10b24f5091f36427fcefd6a0f5c09cf2ed2b89b5fdef14d01e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sWEamt+waX/XkfhVdXiZMqEC2MwImaWvAmGBi5FtotM+ZAUYUtw90+MbiCWnFc3+AM9ujCq4h0QuVxi+0UFnDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T00:29:26.284363Z","bundle_sha256":"a8c3aa2c8f07728668fe5b8e9f1b8d134f2be132889b775e6a9b1c10cfc28693"}}