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The First JWST Spectrum of a GRB Afterglow: No Bright Supernova in Observations of the Brightest GRB of all Time, GRB 221009A

Authors: A. J. Levan, G. P. Lamb, B. Schneider, J. Hjorth, T. Zafar, A. de Ugarte Postigo, B. Sargent, S. E. Mullally, L. Izzo, P. D'Avanzo, E. Burns, J. F. Agüí Fernández, T. Barclay, M. G. Bernardini, K. Bhirombhakdi, M. Bremer, R. Brivio, S. Campana, A. A. Chrimes, V. D'Elia, M. Della Valle, M. De Pasquale, M. Ferro, W. Fong, A. S. Fruchter, J. P. U. Fynbo, N. Gaspari, B. P. Gompertz, D. H. Hartmann, C. L. Hedges, K. E. Heintz, K. Hotokezaka, P. Jakobsson, D. A. Kann, J. A. Kennea, T. Laskar, E. Le Floc'h, D. B. Malesani, A. Melandri, B. D. Metzger, S. R. Oates, E. Pian, S. Piranomonte, G. Pugliese, J. L. Racusin, J. C. Rastinejad, M. E. Ravasio, A. Rossi, A. Saccardi, R. Salvaterra, B. Sbarufatti, R. L. C. Starling, N. R. Tanvir, C. C. Thöne, A. J. van der Horst, S. D. Vergani, D. Watson, K. Wiersema, R. A. M. J. Wijers, Dong Xu

A. J. Levan et al 2023 The Astrophysical Journal Letters 946 .

Provider: AAS Journals

Caption: Figure 8.

Effective radius as a function of F160W magnitude (left) and against stellar mass (right) for GRB hosts and 3D-HST star-forming galaxies at 0 < z < 0.5. The red circles are a population of short GRB hosts at z < 1 from Fong et al. (2022) and Nugent et al. (2022), and blue circles a population of long-GRB hosts at z < 1 from Kelly et al. (2014) and Blanchard et al. (2016). The GRB 221009A host galaxy is visible as an orange star marker. The SFR-weighted median of the 3D-HST population and its 1σ uncertainty are shown as a cyan line and a surrounding cyan region.

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