Image Details
Caption: Figure 2.
Morphology classification based on concentration vs. asymmetry of our host sample—sGRB-KNe (blue) and LGRB-KNe (magenta)—compared to an sGRB (orange; A. Palmese et al. 2017, B. O’Connor et al. 2026, in preparation) and LGRB (gray; J. D. Lyman et al. 2017) host population. The boundaries are defined by Equation (2) of M. A. Bershady et al. (2000). The bulk of the host sample (∼77%) is classified as late-type galaxies, with the exception of GRB 150101B and GRB 170817A as both early type.
© 2026. The Author(s). Published by the American Astronomical Society.