TY - JOUR AU - Cortés Contreras, Miriam AU - Montes Gutiérrez, David PY - 2020 DO - 10.1051/0004-6361/202037719 SN - 0004-6361 UR - https://hdl.handle.net/20.500.14352/6502 T2 - Astronomy & Astrophysics AB - High resolution transit spectroscopy has proven to be a reliable technique for the characterization of the chemical composition of exoplanet atmospheres. Taking advantage of the broad spectral coverage of the CARMENES spectrograph, we initiated a... LA - eng PB - EDP Sciencies KW - High-resolution spectroscopy KW - Mass KW - Stars KW - Absorption KW - Parameters KW - Exoplanets TI - A He I upper atmosphere around the warm Neptune GJ 3470 b TY - journal article VL - 638 ER -