Photometry of K2 Campaign 9 bulge data R. Poleski, M. Penny, B. S. Gaudi, A. Udalski, C. Ranc, G. Barentsen and A. Gould A&A, 627 (2019) A54 Published online: 02 July 2019 DOI: 10.1051/0004-6361/201834544