{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:NLOWXHY3XCILEAR4N5EOUOAVJJ","short_pith_number":"pith:NLOWXHY3","canonical_record":{"source":{"id":"1409.3566","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-11T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"f381c92a19bf45ddb73ca9258abff60632481dc172ea79fad3e8a74022591b30","abstract_canon_sha256":"f13c42d43b7270a0c57cb65550bc819324f0885710757e4f0aafe91b6e7f80e3"},"schema_version":"1.0"},"canonical_sha256":"6add6b9f1bb890b2023c6f48ea38154a5cf7b2448e6d83c260e2980de63faf9d","source":{"kind":"arxiv","id":"1409.3566","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.3566","created_at":"2026-05-18T01:42:03Z"},{"alias_kind":"arxiv_version","alias_value":"1409.3566v1","created_at":"2026-05-18T01:42:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.3566","created_at":"2026-05-18T01:42:03Z"},{"alias_kind":"pith_short_12","alias_value":"NLOWXHY3XCIL","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NLOWXHY3XCILEAR4","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NLOWXHY3","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:NLOWXHY3XCILEAR4N5EOUOAVJJ","target":"record","payload":{"canonical_record":{"source":{"id":"1409.3566","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-11T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"f381c92a19bf45ddb73ca9258abff60632481dc172ea79fad3e8a74022591b30","abstract_canon_sha256":"f13c42d43b7270a0c57cb65550bc819324f0885710757e4f0aafe91b6e7f80e3"},"schema_version":"1.0"},"canonical_sha256":"6add6b9f1bb890b2023c6f48ea38154a5cf7b2448e6d83c260e2980de63faf9d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:03.314055Z","signature_b64":"NOKqoZH8tjKX1FXR7lCpI2jN/E9joqtq4QzHQXXSpCWclHxtPtrvsyGVCQPH+tnoP/2jCEWFoBxROPDjsrT0Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6add6b9f1bb890b2023c6f48ea38154a5cf7b2448e6d83c260e2980de63faf9d","last_reissued_at":"2026-05-18T01:42:03.313448Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:03.313448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.3566","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":"2026-05-18T01:42:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+KUeDfL2q8GeBRgq9WStGc6+bDVZsdceqebQGm+4FHqZ6UHOaS+Z0ed9CBjB1mWxAL/aL1mrgUF75W71B+reBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T05:01:14.046408Z"},"content_sha256":"77064a0691d0a386d3a2fe9177b503dc1a3c6ebe16ea28ffd3dced4a937ade36","schema_version":"1.0","event_id":"sha256:77064a0691d0a386d3a2fe9177b503dc1a3c6ebe16ea28ffd3dced4a937ade36"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:NLOWXHY3XCILEAR4N5EOUOAVJJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tracing chemical evolution over the extent of the Milky Way's Disk with APOGEE Red Clump Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ana E. Garcia Perez, Annie C. Robin, Audrey Simmons, Brett H. Andrews, Carlos Allende Prieto, Cristina Chiappini, D. A. Garcia-Hernandez, Daniel Oravetz, David H. Weinberg, David L. Nidever, Diane Feuillet, Dmitry Bizyaev, Donald P. Schneider, Elena Malanushenko, Friedrich Anders, Gail Zasowski, Garrett Ebelke, Hans-Walter Rix, Howard Brewington, Ivan Minchev, Jennifer A. Johnson, Jennifer Sobeck, Jian Ge, Jo Bovy, John C. Wilson, Jonathan C. Bird, Jon Holtzman, Kaike Pan, Karen Kinemuchi, Katia Cunha, Matthew Shetrone, Michael F. Skrutskie, Michael Hayden, Moses Marchante, O. Zamora, Peter M. Frinchaboy, Ricardo P. Schiavon, Robert W. O'Connell, Steven R. Majewski, Szabolcs Meszaros, Timothy C. Beers, Verne Smith, Viktor Malanushenko","submitted_at":"2014-09-11T20:00:01Z","abstract_excerpt":"We employ the first two years of data from the near-infrared, high-resolution SDSS-III/APOGEE spectroscopic survey to investigate the distribution of metallicity and alpha-element abundances of stars over a large part of the Milky Way disk. Using a sample of ~10,000 kinematically-unbiased red-clump stars with ~5% distance accuracy as tracers, the [alpha/Fe] vs. [Fe/H] distribution of this sample exhibits a bimodality in [alpha/Fe] at intermediate metallicities, -0.9<[Fe/H]<-0.2, but at higher metallicities ([Fe/H]=+0.2) the two sequences smoothly merge. We investigate the effects of the APOGEE"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.3566","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":"2026-05-18T01:42:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JYBn+qya7bgDqJJHTzeQ7iVoJ+1V07Dvs26ejU66u6rdPipt7WBYXDeGl091y7koE/eIez0kcVMi6FYvkHDsAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T05:01:14.046777Z"},"content_sha256":"bf8a7b606c9008da34319161ac22a69fa690c53d8af699b13f97656dbb65bab4","schema_version":"1.0","event_id":"sha256:bf8a7b606c9008da34319161ac22a69fa690c53d8af699b13f97656dbb65bab4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NLOWXHY3XCILEAR4N5EOUOAVJJ/bundle.json","state_url":"https://pith.science/pith/NLOWXHY3XCILEAR4N5EOUOAVJJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NLOWXHY3XCILEAR4N5EOUOAVJJ/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":"2026-06-04T05:01:14Z","links":{"resolver":"https://pith.science/pith/NLOWXHY3XCILEAR4N5EOUOAVJJ","bundle":"https://pith.science/pith/NLOWXHY3XCILEAR4N5EOUOAVJJ/bundle.json","state":"https://pith.science/pith/NLOWXHY3XCILEAR4N5EOUOAVJJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NLOWXHY3XCILEAR4N5EOUOAVJJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:NLOWXHY3XCILEAR4N5EOUOAVJJ","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":"f13c42d43b7270a0c57cb65550bc819324f0885710757e4f0aafe91b6e7f80e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-11T20:00:01Z","title_canon_sha256":"f381c92a19bf45ddb73ca9258abff60632481dc172ea79fad3e8a74022591b30"},"schema_version":"1.0","source":{"id":"1409.3566","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.3566","created_at":"2026-05-18T01:42:03Z"},{"alias_kind":"arxiv_version","alias_value":"1409.3566v1","created_at":"2026-05-18T01:42:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.3566","created_at":"2026-05-18T01:42:03Z"},{"alias_kind":"pith_short_12","alias_value":"NLOWXHY3XCIL","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NLOWXHY3XCILEAR4","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NLOWXHY3","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:bf8a7b606c9008da34319161ac22a69fa690c53d8af699b13f97656dbb65bab4","target":"graph","created_at":"2026-05-18T01:42:03Z","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":"We employ the first two years of data from the near-infrared, high-resolution SDSS-III/APOGEE spectroscopic survey to investigate the distribution of metallicity and alpha-element abundances of stars over a large part of the Milky Way disk. Using a sample of ~10,000 kinematically-unbiased red-clump stars with ~5% distance accuracy as tracers, the [alpha/Fe] vs. [Fe/H] distribution of this sample exhibits a bimodality in [alpha/Fe] at intermediate metallicities, -0.9<[Fe/H]<-0.2, but at higher metallicities ([Fe/H]=+0.2) the two sequences smoothly merge. We investigate the effects of the APOGEE","authors_text":"Ana E. Garcia Perez, Annie C. Robin, Audrey Simmons, Brett H. Andrews, Carlos Allende Prieto, Cristina Chiappini, D. A. Garcia-Hernandez, Daniel Oravetz, David H. Weinberg, David L. Nidever, Diane Feuillet, Dmitry Bizyaev, Donald P. Schneider, Elena Malanushenko, Friedrich Anders, Gail Zasowski, Garrett Ebelke, Hans-Walter Rix, Howard Brewington, Ivan Minchev, Jennifer A. Johnson, Jennifer Sobeck, Jian Ge, Jo Bovy, John C. Wilson, Jonathan C. Bird, Jon Holtzman, Kaike Pan, Karen Kinemuchi, Katia Cunha, Matthew Shetrone, Michael F. Skrutskie, Michael Hayden, Moses Marchante, O. Zamora, Peter M. Frinchaboy, Ricardo P. Schiavon, Robert W. O'Connell, Steven R. Majewski, Szabolcs Meszaros, Timothy C. Beers, Verne Smith, Viktor Malanushenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-11T20:00:01Z","title":"Tracing chemical evolution over the extent of the Milky Way's Disk with APOGEE Red Clump Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.3566","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":"sha256:77064a0691d0a386d3a2fe9177b503dc1a3c6ebe16ea28ffd3dced4a937ade36","target":"record","created_at":"2026-05-18T01:42:03Z","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":"f13c42d43b7270a0c57cb65550bc819324f0885710757e4f0aafe91b6e7f80e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-11T20:00:01Z","title_canon_sha256":"f381c92a19bf45ddb73ca9258abff60632481dc172ea79fad3e8a74022591b30"},"schema_version":"1.0","source":{"id":"1409.3566","kind":"arxiv","version":1}},"canonical_sha256":"6add6b9f1bb890b2023c6f48ea38154a5cf7b2448e6d83c260e2980de63faf9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6add6b9f1bb890b2023c6f48ea38154a5cf7b2448e6d83c260e2980de63faf9d","first_computed_at":"2026-05-18T01:42:03.313448Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:03.313448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NOKqoZH8tjKX1FXR7lCpI2jN/E9joqtq4QzHQXXSpCWclHxtPtrvsyGVCQPH+tnoP/2jCEWFoBxROPDjsrT0Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:03.314055Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.3566","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77064a0691d0a386d3a2fe9177b503dc1a3c6ebe16ea28ffd3dced4a937ade36","sha256:bf8a7b606c9008da34319161ac22a69fa690c53d8af699b13f97656dbb65bab4"],"state_sha256":"f636eb7431c5e0db26ec5d48a532ea6ce1faa2998ef4c53e4f1c98ae297b46a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cvuVqDiuJdP7GYGJrJSuIrMXbl1CjvfBD3Ihr9f95QHKr2Qislvqn0i0q6mcZ7JTZ2j8rLSX0NXsFNVzekLaBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T05:01:14.049450Z","bundle_sha256":"74797fdcf0c2040305945161776065d77e566b3e3182dbdef8ed74c033a1a24e"}}