UNCOVER: The rest ultraviolet to near infrared multiwavelength structures and dust distributions of sub-millimeter-detected galaxies in Abell 2744
Sedona H. Price, Katherine A. Suess, Christina C. Williams, Rachel Bezanson, Gourav Khullar, Erica J. Nelson, Bingjie Wang, John R. Weaver, Seiji Fujimoto, Vasi… 展开作者
Sedona H. Price, Katherine A. Suess, Christina C. Williams, Rachel Bezanson, Gourav Khullar, Erica J. Nelson, Bingjie Wang, John R. Weaver, Seiji Fujimoto, Vasily Kokorev, Jenny E. Greene, Gabriel Brammer, Sam E. Cutler, Pratika Dayal, Lukas J. Furtak, Ivo Labbe, Joel Leja, Tim B. Miller, Themiya Nanayakkara, Richard Pan, Katherine E. Whitaker
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Accepted for publication in ApJ. 16 pages, 7 figures
With the wavelength coverage, sensitivity, and high spatial resolution of JWST, it is now possible to peer through the dust attenuation to probe the rest-frame near infrared (NIR) and stellar structures of extremely dusty galaxies at cosmic noon (z~1-3). In this paper we leverage the combined ALMA and JWST/HST coverage in Abell 2744 to study the multiwavelength (0.5-4.4$μ$m) structures of 11 sub-millimeter (sub-mm) detected galaxies at z~0.9-3.5 that are fainter than bright "classical" sub-mm galaxies (SMGs); 7 of which are detected in deep X-ray data. While these objects reveal a diversity of structures and sizes, all are smaller and more concentrated towards longer wavelengths. Of the X-ray-detected objects, only two show evidence for appreciable AGN flux contributions (at ${\gtrsim}$2$μ$m). Excluding the two AGN-dominated objects, the smaller long wavelength sizes indicate that their rest-frame NIR light profiles, inferred to trace their stellar mass profiles, are more compact than their optical profiles. The sub-mm detections and visible dust lanes suggest centrally-concentrated dust is a key driver of the observed color gradients. Further, we find that more concentrated galaxies tend to have lower size ratios (rest-frame NIR to optical); this suggests that the galaxies with the most compact light distributions also have the most concentrated dust. The 1.2mm flux densities and size ratios of these 9 objects suggest that both total dust quantity and geometry impact these galaxies' multiwavelength structures. Upcoming higher resolution 1.2mm ALMA imaging will facilitate joint spatially-resolved analysis and will directly test the dust distributions within this representative sub-mm population.
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Asia Pacific Center for Theoretical Physics（亚太理论物理中心）；Pohang University of Science and Technology (POSTECH)（韩国科学技术院）；Indian Institute of Astrophysics（印度天体物理研究所）；Pondicherry University（本地治里大学）；Korea Institute for Advanced Study（韩国高等研究院）
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