Spectral variability of photospheric radiation due to faculae - I. The Sun and Sun-like stars Charlotte M. Norris, Benjamin Beeck, Yvonne C. Unruh, Sami K. Solanki, Natalie A. Krivova and Kok Leng Yeo A&A, 605 (2017) A45 Published online: 06 September 2017 DOI: 10.1051/0004-6361/201629879