2024/10/02 by Christina C. Williams, Pascal A. Oesch, Williams, Christina C. +33 · 1 voice · 6 citations
#astro-ph.GA
paper · pdf · doi:10.48550/arxiv.2410.01875
We present the PANORAMIC survey, a pure parallel extragalactic imaging program with NIRCam observed during JWST Cycle 1. The survey obtained ∼530 sq arcmin of NIRCam imaging from 1-5μm, totaling ∼192 hours of science integration time. This represents the largest on-sky time investment of any Cycle 1 GO extragalactic NIRCam imaging program by nearly a factor of 2. The survey includes ∼432 sq arcmin of novel sky area not yet observed with JWST using at least 6 NIRCam broad-band filters, increasing the existing area covered by similar Cycle 1 data by ∼60%. 70 square arcmin was also covered by a 7th filter (F410M). A fraction of PANORAMIC data (∼200 sq arcmin) was obtained in or around extragalactic deep-fields, enhancing their legacy value. Pure parallel observing naturally creates a wedding cake survey with both wide and ultra-deep tiers, with 5σ point source depths at F444W ranging from 27.8-29.4 (ABmag), and with minimized cosmic variance. The 6+ filter observing setup yields remarkably good photometric redshift performance, achieving similar median scatter and outlier fraction as CANDELS (σ\rm NMAD∼0.07; η∼0.2), which enables a wealth of science across redshift without the need for followup or ancillary data. We overview the proposed survey, the data obtained as part of this program, and document the science-ready data products in the first data release. PANORAMIC has delivered wide-area and deep imaging with excellent photometric performance, demonstrating that pure parallel observations with JWST are a highly efficient observing mode that is key to acquiring a complete picture of galaxy evolution from rare bright galaxies to fainter, more abundant sources at all redshifts.