Ice inventory towards the protostar Ced 110 IRS4 observed with the James Webb Space Telescope. Results from the ERS Ice Age program
W. R. M. Rocha, M. K. McClure, J. A. Sturm, T. L. Beck, Z. L. Smith,, H. Dickinson, F. Sun, E. Egami, A. C. A. Boogert, H. J. Fraser, E. Dartois,, I. Jimenez-Serra, J. A. Noble, J. Bergner, P. Caselli, S. B. Charnley, J., Chiar, L. Chu, I. Cooke, N. Crouzet, E. F. van Dishoeck

TL;DR
This study uses JWST observations to analyze and compare ice compositions in the binary protostellar system Ced 110 IRS 4A and 4B, revealing a rich inventory of ices and insights into their chemical history.
Contribution
First detailed JWST-based ice inventory and spectral analysis of the Ced 110 IRS 4 binary protostar system, revealing complex ice compositions and processing.
Findings
Detected major ice species in both protostars, including H2O, CO, CO2, and NH3.
Identified minor species and tentative detections of additional molecules and dust features.
Found similar ice abundances to background stars, with some differences indicating thermal processing.
Abstract
This work focuses on the ice features toward the binary protostellar system Ced 110 IRS 4A and 4B, and observed with JWST as part of the Early Release Science Ice Age collaboration. We aim to explore the JWST observations of the binary protostellar system Ced~110~IRS4A and IRS4B to unveil and quantify the ice inventories toward these sources. We compare the ice abundances with those found for the same molecular cloud. The analysis is performed by fitting or comparing laboratory infrared spectra of ices to the observations. Spectral fits are carried out with the ENIIGMA fitting tool that searches for the best fit. For Ced~110~IRS4B, we detected the major ice species HO, CO, CO and NH. All species are found in a mixture except for CO and CO, which have both mixed and pure ice components. In the case of Ced~110~IRS4A, we detected the same major species as in Ced~110~IRS4B,…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAstro and Planetary Science · Astrophysics and Star Formation Studies · Space Exploration and Technology
