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For example, they are more frequent around metal-rich stars,with an exponential increase in planet occurrence rates with metallicity.\n  Aims. We analyzed two samples of metal-poor stars (-2.0 \\leq [Fe/H] \\leq 0.0) to see if giant planets are indeed rare around these objects. Radial velocity datasets were obtained with two different spectrographs (HARPS and HIRES). Detection limits for these"},"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":"1205.3723","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-05-16T16:19:55Z","cross_cats_sorted":[],"title_canon_sha256":"fe7ad75281b86f0314e2b65b9745e0b795ae48df564bb73edd75d7c35dd7ada1","abstract_canon_sha256":"45fa1c77c61add2ab914a81dc9e96308fdd39c696c4d0a96f788008a2e8c300c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:31.391593Z","signature_b64":"cxcgJqYUuzn1S30aleGKziou8npvnQjdWjnhn0EDsQzuUP3QedPjI5qoMk+No8JhH3LF7LPppeTyjp6s1LLgDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af1be498b713140d2e6bbf40c059f74feb3859510b37e9bb55b789abebe1c8ce","last_reissued_at":"2026-05-18T01:57:31.390878Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:31.390878Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The frequency of giant planets around metal-poor stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. 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