Yellow Hypergiants: A Comparative Study of HR 5171A, Rho Cas, and HR 8752 A. Lobel, C. de Jager, H. Nieuwenhuijzen, A.M. van Genderen and R. Oudmaijer EAS Publications Series, 71-72 (2015) 279-280 Published online: 01 December 2015 DOI: 10.1051/eas/1571062