PTF11iqb: Cool supergiant mass-loss that bridges the gap between Type IIn and normal supernovae

Nathan Smith, Jon C. Mauerhan, S. Bradley Cenko, Mansi M. Kasliwal, Jeffrey M. Silverman, Alexei V. Filippenko, Avishay Gal-Yam, Kelsey I. Clubb, Melissa L. Graham, Douglas C. Leonard, J. Chuck Horst, G. Grant Williams, Jennifer E. Andrews, Shrinivas R. Kulkarni, Peter Nugent, Mark Sullivan, Kate Maguire, Dong Xu, Sagi Ben-Ami