Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) - I. Detection of hot neutral sodium at high altitudes on WASP-49b
A. Wyttenbach, C. Lovis, D. Ehrenreich, V. Bourrier, L. Pino, R. Allart, N. Astudillo-Defru, H. M. Cegla, K. Heng, B. Lavie, C. Melo, F. Murgas, A. Santerne, D. Ségransan, S. Udry and F. Pepe
