标题： ALESS-JWST：联合（次）千秒差距JWST和ALMA成像显示$z\sim3$亚毫米波星系中存在严重遮蔽的核球形成事件 显示英文标题

标题： ALESS-JWST: Joint (sub-)kiloparsec JWST and ALMA imaging of $z\sim3$ submillimeter galaxies reveals heavily obscured bulge formation events

摘要： 我们展示JWST NIRCam成像，针对ALESS调查中的13个$z\sim3$红外明亮（$L_{\rm IR}\sim5\times10^{12}L_{\odot}$）星系，使用独特深度、高分辨率（0.08$''$$-$ 0.16$''$）的ALMA 870$\mu$m成像。 The 2.0$-$4.4$\mu$m (observed frame) NIRCam imaging reveals the rest-frame near-infrared stellar emission in these submillimeter-selected galaxies (SMGs) at the same (sub-)kpc resolution as the 870$\mu$m dust continuum. The newly revealed stellar morphologies show striking similarities with the dust continuum morphologies at 870$\mu$m, with the centers and position angles agreeing for most sources, clearly illustrating that the spatial offsets reported previously between the 870$\mu$m and HST morphologies were due to strong differential dust obscuration. F444W的尺寸比在870$\mu$m处测量的尺寸大78$\pm$21%，这与近期流体动力学模拟的结果相反，这些结果预测870$\mu$m处的尺寸更大。 我们报告了F444W中最高红移源显著尘埃遮挡的证据，强调了更长波长的MIRI成像的重要性。 大多数源显示出它们正在经历合并/相互作用的证据，包括潮汐尾/喷射物——其中一些也在870$\mu$m处被检测到。我们发现NIRCam颜色与870$\mu$m表面亮度在$\sim$1 kpc尺度上有明显相关性，表明星系主要由于尘埃而非恒星年龄而呈现红色，并且我们展示了在$\sim$kpc尺度上的尘埃结构与邻近星系的大致相似。 最后，我们在rest-frame近红外中没有发现强烈的恒星棒，这表明在870$\mu$m处看到的延伸棒状特征是高度被遮挡和/或气体主导的结构，这些结构可能是显著核球增长的早期前体。 显示英文摘要

摘要： We present JWST NIRCam imaging targeting 13 $z\sim3$ infrared-luminous ($L_{\rm IR}\sim5\times10^{12}L_{\odot}$) galaxies from the ALESS survey with uniquely deep, high-resolution (0.08$''$$-$0.16$''$) ALMA 870$\mu$m imaging. The 2.0$-$4.4$\mu$m (observed frame) NIRCam imaging reveals the rest-frame near-infrared stellar emission in these submillimeter-selected galaxies (SMGs) at the same (sub-)kpc resolution as the 870$\mu$m dust continuum. The newly revealed stellar morphologies show striking similarities with the dust continuum morphologies at 870$\mu$m, with the centers and position angles agreeing for most sources, clearly illustrating that the spatial offsets reported previously between the 870$\mu$m and HST morphologies were due to strong differential dust obscuration. The F444W sizes are 78$\pm$21% larger than those measured at 870$\mu$m, in contrast to recent results from hydrodynamical simulations that predict larger 870$\mu$m sizes. We report evidence for significant dust obscuration in F444W for the highest-redshift sources, emphasizing the importance of longer-wavelength MIRI imaging. The majority of the sources show evidence that they are undergoing mergers/interactions, including tidal tails/plumes -- some of which are also detected at 870$\mu$m. We find a clear correlation between NIRCam colors and 870$\mu$m surface brightness on $\sim$1 kpc scales, indicating that the galaxies are primarily red due to dust -- not stellar age -- and we show that the dust structure on $\sim$kpc-scales is broadly similar to that in nearby galaxies. Finally, we find no strong stellar bars in the rest-frame near-infrared, suggesting the extended bar-like features seen at 870$\mu$m are highly obscured and/or gas-dominated structures that are likely early precursors to significant bulge growth.