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The reddening of U Sco is found to be $E(B-V) = 0.14\\pm0.12$, consistent with previous determinations, from simultaneous optical and near-IR observations. The spectra show the evolution of the line widths and profiles to be consistent with previous outbursts. Velocities are found to be up to 14000\\,kms$^{-1}$ in broad components and up to 1800\\,kms$^{-1}$ in narrow line components, which become visible around "},"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":"1109.2468","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-09-12T13:42:47Z","cross_cats_sorted":[],"title_canon_sha256":"bcb246a94cadfa6b6822bbf40d497a2bb6d92d7c39566f3450b131f6f4a889b6","abstract_canon_sha256":"4cedfd47d30433110ab606b251eea76b06b5e0e6064ef0eb389129a0ff5391d8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:34.474732Z","signature_b64":"drGeTfmVYaHX2Mp6O07FfD+6uKdVBowDTwExa3LtY61KlUcsID/KZQgkq8BE8ajMAycdS2dOS9Ahw2/HccPLAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b861eace66b879152457718da4070267ac12e912070b90f26f7fb81554eb4d89","last_reissued_at":"2026-05-18T02:00:34.474070Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:34.474070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Helium Abundance in the Ejecta of U Scorpii","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Evans, B. J. M. Hassall, F. M. Walter, H. L. Worters, M. B. N. Kouwenhoven, M. F. Bode, M. J. Darnley, M. P. Maxwell, M. T. Rushton, S. P. S. Eyres","submitted_at":"2011-09-12T13:42:47Z","abstract_excerpt":"U Scorpii is a recurrent nova which has been observed in outburst on 10 occasions, most recently in 2010. We present near-infrared and optical spectroscopy of the 2010 outburst of U Sco. The reddening of U Sco is found to be $E(B-V) = 0.14\\pm0.12$, consistent with previous determinations, from simultaneous optical and near-IR observations. The spectra show the evolution of the line widths and profiles to be consistent with previous outbursts. 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