FEAST: a NIRSpec/MOS survey of emerging young star clusters in NGC 628
Helena Faustino Vieira, Angela Adamo, Neville Shane, Linda J. Smith, Arjan Bik, Thomas S.-Y. Lai, Alex Pedrini, Leslie K. Hunt, Sean T. Linden, Giacomo Bortolini, Anne S. Buckner, Daniela Calzetti, Matteo Correnti, Ana Duarte-Cabral, Kathryn Grasha, Kelsey E. Johnson

TL;DR
This study demonstrates JWST's capability to analyze emerging young star clusters and their surrounding interstellar medium in NGC 628, revealing detailed spectral properties and feedback mechanisms in early star formation stages.
Contribution
First JWST/NIRSpec multiplex spectroscopy of extragalactic young star clusters, providing new insights into their spectral features and feedback processes outside the Local Group.
Findings
Ionized gas and PDR emissions indicate active young star formation.
Presence of hot, massive stars consistent with photometric estimates.
Dominance of photoionization with minimal supernova shock contribution.
Abstract
JWST can pierce through dusty molecular clouds to study the early stages of star formation, where young star clusters are actively driving stellar feedback and still emerging from their natal cloud. We present a first look of the JWST/NIRSpec multiplex spectroscopy observations acquired by the Feedback in Emerging extrAgalactic Star clusTers (FEAST) program for the nearby spiral galaxy NGC628. We showcase JWST's ability to resolve the spectral properties of emerging young star clusters (eYSCs) and their immediate interstellar medium (ISM) by focusing on a bright star-forming complex () in the northern spiral arm as a science proof-of-concept. The eYSC spectra are rich in ionized gas (from HII regions), as well as warm H and polycyclic aromatic hydrocarbon (PAH) emission from photodissociation regions (PDRs), consistent with young star formation.…
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Taxonomy
TopicsAstrophysics and Star Formation Studies · Galaxies: Formation, Evolution, Phenomena · Astronomy and Astrophysical Research
