{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:GYSEHTK3MDRPB2RHYLWGXGKAJQ","short_pith_number":"pith:GYSEHTK3","schema_version":"1.0","canonical_sha256":"362443cd5b60e2f0ea27c2ec6b99404c27459a51772da77af12e807e676e0269","source":{"kind":"arxiv","id":"1412.1832","version":1},"attestation_state":"computed","paper":{"title":"Low-resolution Spectroscopy for the Globular Clusters with Signs of Supernova Enrichment: M22, NGC 1851 and NGC 288","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Christian I. Johnson, Dong-Goo Roh, Dongwook Lim, Jae-Woo Lee, Sang-Hyun Chun, Sang-Il Han, Young-Jong Sohn, Young-Wook Lee","submitted_at":"2014-12-04T21:00:23Z","abstract_excerpt":"There is increasing evidence for the presence of multiple red giant branches (RGBs) in the color-magnitude diagrams of massive globular clusters (GCs). In order to investigate the origin of this split on the RGB, we have performed new narrow-band Ca photometry and low-resolution spectroscopy for M22, NGC 1851, and NGC 288. We find significant differences (more than 4 sigma) in calcium abundance from the spectroscopic HK' index for M22 and NGC 1851. We also find more than 8 sigma differences in CN band strength between the Ca-strong and Ca-weak subpopulations for these GCs. For NGC 288, however"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1412.1832","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-12-04T21:00:23Z","cross_cats_sorted":[],"title_canon_sha256":"2f43b0b032bc988cedbbd18d7ef71884c8e320bccd06ed2290bde697b9e25449","abstract_canon_sha256":"7744ca2a5cb46ecda1364b1594efe8405a033091270e65c09a076458e31159a9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:23.112895Z","signature_b64":"ekxq7w7OCeycrKWcq/O6igQHZiOVP7DpTTrZLYaxVoRBuaHECZLU9PdKbsx1WyM4JrMVrzujRv0wONlkdaLJDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"362443cd5b60e2f0ea27c2ec6b99404c27459a51772da77af12e807e676e0269","last_reissued_at":"2026-05-18T01:41:23.112285Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:23.112285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Low-resolution Spectroscopy for the Globular Clusters with Signs of Supernova Enrichment: M22, NGC 1851 and NGC 288","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Christian I. Johnson, Dong-Goo Roh, Dongwook Lim, Jae-Woo Lee, Sang-Hyun Chun, Sang-Il Han, Young-Jong Sohn, Young-Wook Lee","submitted_at":"2014-12-04T21:00:23Z","abstract_excerpt":"There is increasing evidence for the presence of multiple red giant branches (RGBs) in the color-magnitude diagrams of massive globular clusters (GCs). In order to investigate the origin of this split on the RGB, we have performed new narrow-band Ca photometry and low-resolution spectroscopy for M22, NGC 1851, and NGC 288. We find significant differences (more than 4 sigma) in calcium abundance from the spectroscopic HK' index for M22 and NGC 1851. We also find more than 8 sigma differences in CN band strength between the Ca-strong and Ca-weak subpopulations for these GCs. For NGC 288, however"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.1832","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1412.1832","created_at":"2026-05-18T01:41:23.112423+00:00"},{"alias_kind":"arxiv_version","alias_value":"1412.1832v1","created_at":"2026-05-18T01:41:23.112423+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.1832","created_at":"2026-05-18T01:41:23.112423+00:00"},{"alias_kind":"pith_short_12","alias_value":"GYSEHTK3MDRP","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_16","alias_value":"GYSEHTK3MDRPB2RH","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_8","alias_value":"GYSEHTK3","created_at":"2026-05-18T12:28:30.664211+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ","json":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ.json","graph_json":"https://pith.science/api/pith-number/GYSEHTK3MDRPB2RHYLWGXGKAJQ/graph.json","events_json":"https://pith.science/api/pith-number/GYSEHTK3MDRPB2RHYLWGXGKAJQ/events.json","paper":"https://pith.science/paper/GYSEHTK3"},"agent_actions":{"view_html":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ","download_json":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ.json","view_paper":"https://pith.science/paper/GYSEHTK3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1412.1832&json=true","fetch_graph":"https://pith.science/api/pith-number/GYSEHTK3MDRPB2RHYLWGXGKAJQ/graph.json","fetch_events":"https://pith.science/api/pith-number/GYSEHTK3MDRPB2RHYLWGXGKAJQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ/action/storage_attestation","attest_author":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ/action/author_attestation","sign_citation":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ/action/citation_signature","submit_replication":"https://pith.science/pith/GYSEHTK3MDRPB2RHYLWGXGKAJQ/action/replication_record"}},"created_at":"2026-05-18T01:41:23.112423+00:00","updated_at":"2026-05-18T01:41:23.112423+00:00"}