![The ionized nebula surrounding the red supergiant W26 in Westerlund 1]()
The ionized nebula surrounding the red supergiant W26 in Westerlund 1Wright, N. J.; Wesson, R.; Drew, J. E.; Barentsen, G.; Barlow, M. J.; Walsh, J. R.; Zijlstra, A.; Drake, J. J.; Eisloffel, J.; Farnhill, H. J. · Monthly Notices of the Royal Astronomical Society: Letters · 2014