Evidence of a massive planet candidate orbiting the young active K5V star BD+20 1790 M. Hernán-Obispo, M. C. Gálvez-Ortiz, G. Anglada-Escudé, S. R. Kane, J. R. Barnes, E. de Castro and M. Cornide A&A, 512 (2010) A45 Published online: 30 March 2010 DOI: 10.1051/0004-6361/200811000