{"paper":{"title":"Detection of He I $\\lambda10830$ \\AA{} absorption on HD 189733 b with CARMENES high-resolution transmission spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Kaminski, A. Quirrenbach, A. Reiners, A. S\\'anchez-L\\'opez, D. Montes, E. Nagel, E. Pall\\'e, E. W. Guenther, F. F. Bauer, F. J. Alonso-Floriano, F. Yan, G. Chen, I. A. G. Snellen, I. Ribas, J. A. Caballero, J. C. Morales, J. H. M. M. Schmitt, J. Sanz-Forcada, K. Molaverdikhani, L. M. Lara, L. Nortmann, M. Cort\\'es-Contreras, M. K\\\"urster, M. Lafarga, M. Lamp\\'on, M. L\\'opez-Puertas, M. R. Zapatero Osorio, M. Salz, M. Zechmeister, N. Casasayas-Barris, P. C. Schneider, P. J. Amado, S. Czesla, S. Dreizler, S. V. Jeffers, T. Henning, V. J. S. B\\'ejar, W. Seifert","submitted_at":"2018-12-06T10:52:34Z","abstract_excerpt":"We present three transit observations of HD 189733 b obtained with the high-resolution spectrograph CARMENES at Calar Alto. A strong absorption signal is detected in the near-infrared He I triplet at 10830 \\AA{} in all three transits. During mid-transit, the mean absorption level is $0.88\\pm0.04$ % measured in a $\\pm$10 km s$^{-1}$ range at a net blueshift of $-3.5\\pm0.4$ km s$^{-1}$ (10829.84--10830.57 \\AA{}). The absorption signal exhibits radial velocities of $+6.5\\pm3.1$ km s$^{-1}$ and $-12.6\\pm1.0$ km s$^{-1}$ during ingress and egress, respectively; measured in the planetary rest frame."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.02453","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"}