GIARPS/GRAVITY Survey: Broad-Band 0.44–2.4 Micron High-Resolution Spectra of T-Tauri and Herbig AeBe Stars – Combining High Spatial and High Spectral Resolution Data to Unveil the Inner Disc Physics F. Massi, A. Caratti o Garatti, R. Garcia Lopez, M. Benisty, J. Brand, W. Brandner, S. Casu, D. Coffey, C. Dougados, A. Giannetti, L. Labadie, S. Leurini, L. Moscadelli, A. Natta, M. Pedani, K. Perraut, T. Ray, A. Sanna, and N. Sanna F. Massi (!)·L.Moscadelli·A.Natta·N.Sanna INAF-Osservatorio Astrofisico di Arcetri, Firenze, Italy e-mail:
[email protected] A. Caratti o Garatti · R. Garcia Lopez · T. Ray Astronomy & Astrophysics Section, Dublin Institute for Advanced Studies, Dublin 2, Ireland e-mail:
[email protected] M. Benisty · C. Dougados · K. Perraut Université Grenoble Alpes, CNRS, IPAG, Grenoble, France J. Brand · A. Giannetti Italian ARC, INAF-IRA, Bologna, Italy W. Brandner Max Planck Institute für Astronomy, Heidelberg, Germany S. Casu · S. Leurini INAF-Osservatorio Astronomico di Cagliari, Selargius (CA), Italy D. Coffey School of Physics, University College Dublin, Belfield, Dublin 4, Ireland L. Labadie I. Physikalisches Institut, Universität zu Köln, Köln, Germany M. Pedani INAF – Fundación Galileo Galilei, Breña Baja, Spain A. Sanna Max-Planck-InstitutfürRadioastronomie,Bonn,Germany ©SpringerNatureSwitzerlandAG2019 133 C. Sauty (ed.), JET Simulations, Experiments, and Theory, Astrophysics and Space Science Proceedings 55, https://doi.org/10.1007/978-3-030-14128-8_19 134 F. Massi et al. 1 Circumstellar Processes in Young Stellar Objects Disc structures are ubiquitous in astrophysics. In star formation, they are instru- mental in mediating accretion of matter onto new-born stars as well as in ejecting matter through collimated outflows.