Extended Data Fig. 1: The JWST NIRCam Ice Age observational footprints.
From: Cospatial ice mapping of H2O with CO2 and CO across a molecular cloud with JWST/NIRCam
The overlapping ~ 6.2 arcmin2 field outlined in dark blue was used to derive cospatial ice maps for H2O, CO2 and CO. F150W and F200W short wavelength NIRCam imaging is shown in grey-scale. The H2 column density contours derived from Herschel far-IR observations from refs. 39,40,41 are overplotted in a heat color table. The outline footprint for each of the spectral filters is identified by cyan (F322W2) or purple (F444W) lines. These regions are limited by observational constraints but share a common central region (outlined in dark blue), where all three ice species could be detected. Two black circles mark the positions of the background stars NIR38 (NE) and J110621 (SW)27,33,34 and two yellow stars mark the positions of the Class I YSO CED110 IRS 4a (NE) and the deeply embedded Class 0 YSO Cha MMS1 (SW)38.
