HST Imaging of the Brightest z similar to 8-9 Galaxies from UltraVISTA: The Extreme Bright End of the UV Luminosity Function

Mauro Stefanon, Ivo Labbe, Rychard J. Bouwens, Gabriel B. Brammer, Pascal Oesch, Marijn Franx, Johan P. U. Fynbo, Bo Milvang-Jensen, Adam Muzzin, Garth D. Illingworth, Olivier Le Fevre, Karina I. Caputi, Benne W. Holwerda, Henry J. McCracken, Renske Smit, Dan Magee