JWST Photometric Time-delay and Magnification Measurements for the Triply Imaged Type Ia "SN H0pe" at z = 1.78
Pérez-Fournon, I.; Fox, O. D.; Ryan, R. E.; Poidevin, F.; Frye, B. L.; Huang, X.; Zitrin, A.; Rest, A.; Treu, T.; Kelly, P.; Dhawan, S.; Johansson, J.; Grillo, C.; Koekemoer, A. M.; Moustakas, L. A.; Nonino, M.; Coe, D.; Conselice, C. J.; Grogin, N. A.; Li, G.; Caminha, G. B.; Hjorth, J.; Mazzali, P. A.; Willmer, C. N. A.; Riess, A. G.; Chakrabarti, S.; Yan, H.; Jha, S. W.; Suyu, S. H.; Ortiz, R.; Jansen, R. A.; Gall, C.; Pirzkal, N.; Chen, W.; Pierel, J. D. R.; Driver, S. P.; Cañameras, R.; Schuldt, S.; Windhorst, R. A.; Acebron, A.; Summers, J.; Coulter, D. A.; Birrer, S.; Robotham, A.; Cohen, S. H.; Arendse, N.; Bronikowski, M.; Engesser, M.; Larison, C.; Petrushevska, T.; Strolger, L. G.; Thorp, S.; Huber, S.; Marshall, M. A.; Meena, A. K.; Pascale, M.; Gilman, D.; Grayling, M.; DŚilva, J. C. J.; Foo, N.; Garuda, N.; Henderson, J.; Kamieneski, P. S.
United States, Germany, United Kingdom, Sweden, Slovenia, Australia, Denmark, Italy, Canada, Taiwan, Israel, China, Spain
Abstract
Supernova (SN) SN H0pe is a gravitationally lensed, triply imaged, Type Ia SN (SN Ia) discovered in James Webb Space Telescope imaging of the PLCK G165.7+67.0 cluster of galaxies. Well-observed multiply imaged SNe provide a rare opportunity to constrain the Hubble constant (H 0), by measuring the relative time delay between the images and modeling the foreground mass distribution. SN H0pe is located at z = 1.783 and is the first SN Ia with sufficient light-curve sampling and long enough time delays for an H 0 inference. Here we present photometric time-delay measurements and SN properties of SN H0pe. Using JWST/NIRCam photometry, we measure time delays of Δt ab =