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Probing the Origin of the Kilonova Candidate GRB 230307A: Analysis of Host Galaxy and Offset

  • Authors: Clecio R. Bom, Davi C. Rodrigues, Arianna Cortesi, Amanda E. Araujo-Carvalho, Daniel Ruschel-Dutra, Giuliano Iorio, Luidhy Santana-Silva, Charles D. Kilpatrick, Fabricio Ferrari, Luis Lomelí-Núñez, Thomas Harvey, Duncan Austin, Christopher J. Conselice, Nathan Adams, Roberto Cid Fernandes

Clecio R. Bom et al 2026 The Astrophysical Journal Letters 1001 .

  • Provider: AAS Journals

Caption: Figure A1.

356-band image of the host galaxy. The blue circles show the objects for which JWST photo-z measurements are available; see Section 2 for more details. Three small galaxies that appear near the host galaxy (≤6″) have their photo-z written with red labels, and it is consistent with z ≥ 1. A cloudy feature is also present toward the southeast with a photo-z consistent with the host galaxy one, given the large error bars; see Figure A2.

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