JWST reveals a possible \(z \sim 11\) galaxy merger in triply-lensed MACS0647\(-\)JD

• Published in: arXiv.org 2023-05
• Main Authors: Tiger Yu-Yang Hsiao, Coe, Dan, Abdurro'uf, Whitler, Lily, Jung, Intae, Khullar, Gourav, Meena, Ashish Kumar, Dayal, Pratika, Barrow, Kirk S S, Santos-Olmsted, Lillian, Casselman, Adam, Vanzella, Eros, Nonino, Mario, Jimenez-Teja, Yolanda, Oguri, Masamune, Stark, Daniel P, Furtak, Lukas J, Zitrin, Adi, Adamo, Angela, Brammer, Gabriel, Bradley, Larry, Diego, Jose M, Zackrisson, Erik, Finkelstein, Steven L, Windhorst, Rogier A, Bhatawdekar, Rachana, Hutchison, Taylor A, Broadhurst, Tom, Dimauro, Paola, Andrade-Santos, Felipe, Eldridge, Jan J, Acebron, Ana, Avila, Roberto J, Bayliss, Matthew B, Benitez, Alex, Binggeli, Christian, Bolan, Patricia, Bradac, Marusa, Carnall, Adam C, Conselice, Christopher J, Donahue, Megan, Frye, Brenda, Fujimoto, Seiji, Henry, Alaina, James, Bethan L, Kassin, Susan, Kewley, Lisa, Larson, Rebecca L, Lauer, Tod, Law, David, Mahler, Guillaume, Mainali, Ramesh, McCandliss, Stephan, Nicholls, David, Pirzkal, Norbert, Postman, Marc, Rigby, Jane R, Ryan, Russell, Senchyna, Peter, Keren, Sharon, Shimizu, Ikko, Strait, Victoria, Tang, Mengtao, Trenti, Michele, Vikaeus, Anton, Welch, Brian
• Format: Article
• Language: English
• Subjects: Confidence intervals; Dust; Galaxy mergers & collisions; Hubble Space Telescope; James Webb Space Telescope; Photometry; Physical properties; Red shift; Space telescopes; Star & galaxy formation; Star formation; Stars & galaxies; Stellar mass
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2210.14123

MACS0647\(-\)JD is a triply-lensed \(z\sim11\) galaxy originally discovered with the Hubble Space Telescope. Here we report new JWST imaging, which clearly resolves MACS0647\(-\)JD as having two components that are either merging galaxies or stellar complexes within a single galaxy. Both are very small, with stellar masses \(\sim10^8\,M_\odot\) and radii \(r