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We also use previously published observations of HCN and HCO$^+$ $J=1\\rightarrow0$ and $J=3\\rightarrow2$, and HNC $J=1\\rightarrow0$ in the same source.\n  Results: In the line wings of the HCN, HCO$^+$, and HNC emission, we find that these three molecular species e"},"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":"1512.04854","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-15T17:00:18Z","cross_cats_sorted":[],"title_canon_sha256":"06eff7551494ca5fdd3b4401c408f028817810b28408b836b9e4a3975d28ce19","abstract_canon_sha256":"4b7008fdf1e7669092aaa428c85a42046fa27cc7eff490fcf1f757300202f78c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:32.710824Z","signature_b64":"OP2KTUz3NezJkMEosUJ0fs3jhv3VBS8YYRA270NNyFoGtMwXujVB/BgeebdN2jjKnRFGITE3QXXxpYTiKrLgCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c865403bf7988dc6ad03a52e1a866ea92d76109e10bdbcf654cf56a3b840afad","last_reissued_at":"2026-05-18T01:20:32.710307Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:32.710307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Evidence for a chemically differentiated outflow in Mrk 231","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. 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