{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:A7PAVM7TRW2ZXRNKCGV3R7ICLQ","short_pith_number":"pith:A7PAVM7T","canonical_record":{"source":{"id":"1210.7829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-29T20:28:08Z","cross_cats_sorted":[],"title_canon_sha256":"4988068749f5fbffd3934591913b3ee98af3a5e42593aaa0cf511a74e432be55","abstract_canon_sha256":"f8024fafef11ccd14c23f625a225f3106685d4ed2ff2159963fe59282d552111"},"schema_version":"1.0"},"canonical_sha256":"07de0ab3f38db59bc5aa11abb8fd025c2aadb59d93bf91e4986e6184ee3d7e4d","source":{"kind":"arxiv","id":"1210.7829","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.7829","created_at":"2026-05-18T01:53:35Z"},{"alias_kind":"arxiv_version","alias_value":"1210.7829v1","created_at":"2026-05-18T01:53:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.7829","created_at":"2026-05-18T01:53:35Z"},{"alias_kind":"pith_short_12","alias_value":"A7PAVM7TRW2Z","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"A7PAVM7TRW2ZXRNK","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"A7PAVM7T","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:A7PAVM7TRW2ZXRNKCGV3R7ICLQ","target":"record","payload":{"canonical_record":{"source":{"id":"1210.7829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-29T20:28:08Z","cross_cats_sorted":[],"title_canon_sha256":"4988068749f5fbffd3934591913b3ee98af3a5e42593aaa0cf511a74e432be55","abstract_canon_sha256":"f8024fafef11ccd14c23f625a225f3106685d4ed2ff2159963fe59282d552111"},"schema_version":"1.0"},"canonical_sha256":"07de0ab3f38db59bc5aa11abb8fd025c2aadb59d93bf91e4986e6184ee3d7e4d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:35.964558Z","signature_b64":"lJSEqSX5IX7jtx006t31+cAfPuVxKgb3JP7e6e517l45cHQmh/nu7Gwsk6xf34x29GBBcxV3/s3cATS9Uk95BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"07de0ab3f38db59bc5aa11abb8fd025c2aadb59d93bf91e4986e6184ee3d7e4d","last_reissued_at":"2026-05-18T01:53:35.963865Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:35.963865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.7829","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":"2026-05-18T01:53:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SmrRNH4BLqTYIQj0FhDV+n4WcnvyYLBlXesxbiWhodIaqIJP323dJTJzErdI1ZOJW5HgiQP+rtuMVexrmf1ECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T22:44:49.249099Z"},"content_sha256":"e9a534559da176ed863622101cb2db6c766c5da32437bb79e5e4b5b5ce98223a","schema_version":"1.0","event_id":"sha256:e9a534559da176ed863622101cb2db6c766c5da32437bb79e5e4b5b5ce98223a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:A7PAVM7TRW2ZXRNKCGV3R7ICLQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Diversity of Type Ia Supernovae Imprinted in Chemical Abundances","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Takuji Tsujimoto, Toshikazu Shigeyama","submitted_at":"2012-10-29T20:28:08Z","abstract_excerpt":"A time delay of Type Ia supernova (SN Ia) explosions hinders the imprint of their nucleosynthesis on stellar abundances. However, some occasional cases give birth to stars that avoid enrichment of their chemical compositions by massive stars and thereby exhibit a SN Ia-like elemental feature including a very low [Mg/Fe] (~-1). We highlight the elemental feature of Fe-group elements for two low-Mg/Fe objects detected in nearby galaxies, and propose the presence of a class of SNe Ia that yield the low abundance ratios of [Cr,Mn,Ni/Fe]. Our novel models of chemical evolution reveal that our propo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.7829","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":"2026-05-18T01:53:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9k+u+MF/jlw7SghrNKIg6D/WN8FX7E+K8ztEraaXhtls8KtslrVh9j0Y6qEHBG1ZMXLb4vZk4qODpC05qbKIDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T22:44:49.249507Z"},"content_sha256":"c0463932a5f63109501e3d63f5524c2bd84204bb02008956847fd5d03ff9a38a","schema_version":"1.0","event_id":"sha256:c0463932a5f63109501e3d63f5524c2bd84204bb02008956847fd5d03ff9a38a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A7PAVM7TRW2ZXRNKCGV3R7ICLQ/bundle.json","state_url":"https://pith.science/pith/A7PAVM7TRW2ZXRNKCGV3R7ICLQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A7PAVM7TRW2ZXRNKCGV3R7ICLQ/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":"2026-06-07T22:44:49Z","links":{"resolver":"https://pith.science/pith/A7PAVM7TRW2ZXRNKCGV3R7ICLQ","bundle":"https://pith.science/pith/A7PAVM7TRW2ZXRNKCGV3R7ICLQ/bundle.json","state":"https://pith.science/pith/A7PAVM7TRW2ZXRNKCGV3R7ICLQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A7PAVM7TRW2ZXRNKCGV3R7ICLQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:A7PAVM7TRW2ZXRNKCGV3R7ICLQ","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":"f8024fafef11ccd14c23f625a225f3106685d4ed2ff2159963fe59282d552111","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-29T20:28:08Z","title_canon_sha256":"4988068749f5fbffd3934591913b3ee98af3a5e42593aaa0cf511a74e432be55"},"schema_version":"1.0","source":{"id":"1210.7829","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.7829","created_at":"2026-05-18T01:53:35Z"},{"alias_kind":"arxiv_version","alias_value":"1210.7829v1","created_at":"2026-05-18T01:53:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.7829","created_at":"2026-05-18T01:53:35Z"},{"alias_kind":"pith_short_12","alias_value":"A7PAVM7TRW2Z","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"A7PAVM7TRW2ZXRNK","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"A7PAVM7T","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:c0463932a5f63109501e3d63f5524c2bd84204bb02008956847fd5d03ff9a38a","target":"graph","created_at":"2026-05-18T01:53:35Z","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":"A time delay of Type Ia supernova (SN Ia) explosions hinders the imprint of their nucleosynthesis on stellar abundances. However, some occasional cases give birth to stars that avoid enrichment of their chemical compositions by massive stars and thereby exhibit a SN Ia-like elemental feature including a very low [Mg/Fe] (~-1). We highlight the elemental feature of Fe-group elements for two low-Mg/Fe objects detected in nearby galaxies, and propose the presence of a class of SNe Ia that yield the low abundance ratios of [Cr,Mn,Ni/Fe]. Our novel models of chemical evolution reveal that our propo","authors_text":"Takuji Tsujimoto, Toshikazu Shigeyama","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-29T20:28:08Z","title":"Diversity of Type Ia Supernovae Imprinted in Chemical Abundances"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.7829","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:e9a534559da176ed863622101cb2db6c766c5da32437bb79e5e4b5b5ce98223a","target":"record","created_at":"2026-05-18T01:53:35Z","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":"f8024fafef11ccd14c23f625a225f3106685d4ed2ff2159963fe59282d552111","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-29T20:28:08Z","title_canon_sha256":"4988068749f5fbffd3934591913b3ee98af3a5e42593aaa0cf511a74e432be55"},"schema_version":"1.0","source":{"id":"1210.7829","kind":"arxiv","version":1}},"canonical_sha256":"07de0ab3f38db59bc5aa11abb8fd025c2aadb59d93bf91e4986e6184ee3d7e4d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"07de0ab3f38db59bc5aa11abb8fd025c2aadb59d93bf91e4986e6184ee3d7e4d","first_computed_at":"2026-05-18T01:53:35.963865Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:35.963865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lJSEqSX5IX7jtx006t31+cAfPuVxKgb3JP7e6e517l45cHQmh/nu7Gwsk6xf34x29GBBcxV3/s3cATS9Uk95BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:35.964558Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.7829","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9a534559da176ed863622101cb2db6c766c5da32437bb79e5e4b5b5ce98223a","sha256:c0463932a5f63109501e3d63f5524c2bd84204bb02008956847fd5d03ff9a38a"],"state_sha256":"e78987de19523995d62cf91b33125b562766f68aef09100e7480e691b487ef82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dWHv+aKQlQq/dUo7xF8XzP5EpxrwCawIerPHa6KGN9BAA+TSvjSphyUGNJ4mlmpNDAiLPwguRoUwyHHzJWTdCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T22:44:49.251933Z","bundle_sha256":"1be899256da82fd503a19bd1aa443e838e6ff1c292c1c8e3b6c023568e031550"}}