TY - JOUR AU - Caballero, J. A. AU - Burgos, A. de AU - Alonso Floriano, F.J. AU - Cabrera Lavers, A. AU - García Álvarez, D. AU - Montes Gutiérrez, David PY - 2019 DO - 10.1051/0004-6361/201935987 SN - 1432-0746 UR - https://hdl.handle.net/20.500.14352/13880 T2 - Astronomy and astrophysics AB - Context. Only a few open clusters are as important for the study of stellar and substellar objects, and their formation and evolution, as the young σ Orionis cluster. However, a complete spectroscopic characterisation of its whole stellar population... LA - eng PB - EDP Sciencies KW - X-ray-emission KW - Low-Mass stars KW - T-Tauri stars KW - Young stars KW - Resolution spectroscopy KW - Chromospheric activity KW - Kinematic structure KW - Lithium abundances KW - Binary stars KW - Stellar TI - Stars and brown dwarfs in the sigma Orionis cluster IV. IDS/INT and OSIRIS/GTC spectroscopy and Gaia DR2 astrometry TY - journal article VL - 629 ER -