Evidence for Ubiquitous High-equivalent-width Nebular Emission in z ~ 7 Galaxies: Toward a Clean Measurement of the Specific Star-formation Rate Using a Sample of Bright, Magnified Galaxies

R. Smit, R. J. Bouwens, I. Labbe, W. Zheng, L. Bradley, M. Donahue, D. Lemze, J. Moustakas, K. Umetsu, A. Zitrin, D. Coe, M. Postman, V. Gonzalez, M. Bartelmann, N. Benitez, T. Broadhurst, H. Ford, C. Grillo, L. Infante, Y. Jimenez-TejaS. Jouvel, D. D. Kelson, O. Lahav, D. Maoz, E. Medezinski, P. Melchior, M. Meneghetti, J. Merten, A. Molino, L. A. Moustakas, M. Nonino, P. Rosati, S. SeitzVis 13 andreVis mindre