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Extremely metal-poor (EMP) stars are formed from gas clouds enriched by one or a few supernova explosions belonging to the first stellar generation and this very limited number of sources of metal enrichment is suitable to produce peculiar chemical patterns that give birth to stars with anomalous chemical composition. Among the EMP stars, r-II stars are characterised by an over-abundance of the heavy elements with respect to iron. Aims . In the search for apparently young, metal-poor stars, we serendipitously selected TYC 170-1218-1, which turned out to be an EMP star, enhanced in ne"},"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":"2606.09352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-08T11:26:37Z","cross_cats_sorted":[],"title_canon_sha256":"5dc30f4ead9a55960701089364b472dcbbead699ec3a9df5318cf132df021b39","abstract_canon_sha256":"c018e61643fd65f2f0706463cdc2f7fb101682a9ae92dbb633480370170e5423"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-09T02:08:17.142387Z","signature_b64":"mri/kCQGatG+qucgw2Q9L1jjpfLREoVybImfS0rYT9Xb242dMItdAIWR2FRfAAPdZ0np6sX0F1nM01c5LKMgAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a4c5f133c7d9e707b5324f57d61c2df56615bb04f614f02ff3fdb54c80c87fd0","last_reissued_at":"2026-06-09T02:08:17.141496Z","signature_status":"signed_v1","first_computed_at":"2026-06-09T02:08:17.141496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"TYC 170-1218-1: A new r-process-enhanced extremely metal-poor star, rich in Th","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. 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