Connecting measurements of solar and stellar brightness variations N.-E. Nèmec, E. Işık, A. I. Shapiro, S. K. Solanki, N. A. Krivova and Y. Unruh A&A, 638 (2020) A56 Published online: 10 June 2020 DOI: 10.1051/0004-6361/202038054