Multi-wavelength morphology and dust emission in low-redshift dwarf galaxies in COSMOS-Web with HST and JWST
University of Hertfordshire（赫特福德大学）；Rochester Institute of Technology（罗切斯特理工学院）；University of Manchester（曼彻斯特大学）；University of Nottingham（诺丁汉大学）；University of Cambridge（剑桥大学）
D. Kakkad, I. Lazar, S. Harish, B. Bichang'a, R. K. Cochrane, S. Kaviraj, A. E. Watkins, G. Martin, S. Koudmani, Andrew J. Battisti, Caitlin Casey, Maximilien F… 展开作者
D. Kakkad, I. Lazar, S. Harish, B. Bichang'a, R. K. Cochrane, S. Kaviraj, A. E. Watkins, G. Martin, S. Koudmani, Andrew J. Battisti, Caitlin Casey, Maximilien Franco, G. Gozaliasl, M. Hirschmann, Jeyhan Kartaltepe, A. A. Khostovan, Anton Koekemoer, Daizhong Liu, Henry Joy McCracken, Jason Rhodes, Brant Robertson
备注：
Accepted for publication in MNRAS; 13 pages, 9 figures, 2 tables
Low-mass or dwarf galaxies (M$_{\ast}<10^{9}$ M${\odot}$) are abundant in the Universe, yet their formation and evolution remain poorly understood. Their enhanced sensitivity to feedback from star formation and active galactic nuclei (AGN) make them excellent laboratories to test whether feedback prescriptions in cosmological simulations accurately reproduce their interstellar medium (ISM) properties. We present JWST/NIRCam and MIRI imaging of nine dwarf galaxies from COSMOS-Web survey at redshift $z<0.08$, with star formation rates ranging from 0.003-0.3 M${\odot}$ yr$^{-1}$ and stellar masses of log M$_{\ast}\sim8-9$ M$_{\odot}$. The detection rate with both NIRCam and MIRI is 100\%, indicating that these dwarfs possess substantial ISM content. The detected sample includes a roughly equal mix of early-type and late-type dwarfs, suggesting that it is representative of the broader dwarf galaxy population in low-density environments. We find that the observed MIRI flux distributions are comparable to forward-modelled flux distributions of mass-matched simulated galaxies in TNG50. We further conduct a multi-wavelength morphological analysis complementing the JWST NIRCam and MIRI imaging with archival HST/ACS data, employing the CAS (concentration, asymmetry, smoothness) framework. Among the multi-wavelength images, MIRI exhibits the largest variation in CAS parameters, likely due to dust lanes and clumps in several galaxies, also suggested by Spectral Energy Distribution (SED) fitting. This suggests that the dust content in these systems may be higher than those implied by rest-frame optical or near-infrared observations alone. Upcoming UV/optical and mid-infrared spectroscopic follow-up will be critical for constraining the gas kinematics and dust grain properties of dwarf galaxies in low-density environments such as COSMOS.
The JWST Resolved Stellar Populations Early Release Science Program. IX. The RR Lyrae Population in WLM with HST and JWST
Minnesota Institute for Astrophysics, University of Minnesota（明尼苏达大学天体物理研究所）；Department of Astronomy, University of California, Berkeley（加州大学伯克利分校天文学系）；Space Telescope Science Institute（太空望远镜科学研究所）；Department of Physics and Astronomy, Rutgers, the State University of New Jersey（新泽西州立大学罗格斯大学物理与天文系）
Tracing the earliest stages of star and cluster formation in 19 nearby galaxies with PHANGS-JWST and HST: compact 3.3 $μ$m PAH emitters and their relation to the optical census of star clusters
University of Minnesota（明尼苏达大学）；Northwestern University（西北大学）；University of California, Berkeley（加州大学伯克利分校）；University of Washington（华盛顿大学）；Raytheon（雷神公司）；University of Arizona（亚利桑那大学）；Rutgers, the State University of New Jersey（新泽西州立罗格斯大学）；Space Telescope Science Institute（太空望远镜科学研究所）
Evolution and Mass Dependence of UV-to-near-IR Color Gradients up to z=2.5 from HST+JWST
Universiteit Gent（根特大学）；University of Michigan（密歇根大学）；University of Copenhagen（哥本哈根大学）；Université de Liège（列日大学）；University of Massachusetts, Amherst（马萨诸塞大学阿默斯特分校）；University of Bath（巴斯大学）
A joint JWST and HST view of Omega Centauri: Multiple stellar populations and their kinematics
Univ. di Padova（帕多瓦大学）；Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Padova（意大利国家天体物理研究所-帕多瓦天文台）；Research School of Astronomy & Astrophysics, Australian National University（澳大利亚国立大学天文与天体物理研究学院）
Witnessing the rapid growth of disk galaxies over cosmic time using JWST and HST
Universidad de Valladolid（巴利亚多利德大学）；Laboratory for Disruptive Interdisciplinary Science (LaDIS), Universidad de Valladolid（巴利亚多利德大学颠覆性跨学科科学实验室）；Institute of Space Sciences (ICE, CSIC)（空间科学研究所（ICE，CSIC））；Instituto de Astrofísica de Canarias（加那利天体物理研究所）；Departamento de Astrofísica, Universidad de La Laguna（拉帕拉塔大学天体物理学系）；Instituto de Astrofísica e Ciéncia do Espaço, Universidad de Lisboa（里斯本大学天体物理学与空间科学研究所）
Varstrometry for Off-nucleus and Dual Subkiloparsec AGN (VODKA): Three Quadruply Lensed Quasars at Cosmic Noon in HST and JWST
Johns Hopkins University（约翰斯·霍普金斯大学）；University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；Wuhan University（武汉大学）；Institute for Advanced Study（普林斯顿高等研究院）；Massachusetts Institute of Technology（麻省理工学院）
CANUCS/Technicolor Data Release 2: A Catalogue of Galaxy Structural Parameters in up to 29 HST+JWST bands and a Multi-Wavelength Exploration of the Galaxy Size-Mass Relation at $0.6 < z \leq 4$
York University（约克大学）；Wellesley College（韦尔斯利学院）；Independent University Bangladesh（孟加拉独立大学）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；DTU-Space, Technical University of Denmark（丹麦技术大学空间科学中心）；National Research Council of Canada, Herzberg Astronomy & Astrophysics Research Centre（加拿大国家研究委员会赫茨伯格天体物理学与天文学研究中心）
Probing the earliest phases in the formation of massive galaxies with simulated HST+JWST imaging data from Illustris
我们使用的Illustris-1模拟探索的$\textit{Hubble}$和$\textit{James Webb Space Telescope}$数据的能力，分析在高红移星系的恒星种群，利用相结合的深度，空间分辨率和波长覆盖范围。为此，我们使用模拟的宽带ACS，WFC 3和NIRCam数据和2维恒星布居合成（2D-SPS）导出的综合恒星形成历史（SFH）的大质量（M $_{\ast}>10^{10}\,$ M $_{\odot}$）模拟星系在$1<z<4$演变成一个本地M $_{\ast}>10^{11}\,$ M $_{\odot}$星系。特别是，我们探索的潜力HST和JWST数据集达到的深度类似的CANDELS和正在进行的CEERS观测，分别，并集中在确定该数据集的能力，为本地M $_{\ast}>10^{11}\,$ M $_{\odot}$星系的SFH的第一集通过研究他们的祖先在$z>1$。本文提出的2D-SPS方法已经过校准，可以稳健地恢复大质量星系中第一次恒星形成事件发生的宇宙时间，即，他们的综合SFH的第一阶段。特别是，我们讨论的时间时，第一个1%至50%的总恒星质量形成的模拟。我们证明，我们可以恢复这些年龄与典型的中位数系统偏移小于5%，分散在20%-30%。根据我们对Illustris数据的测量，我们能够恢复本地M $_{\ast}>10^{11}\,$ M…
Observing the host galaxies of high-redshift quasars with JWST: predictions from the BlueTides simulation
高红移类星体发出的明亮辐射在静止坐标系的紫外/光学波段完全掩盖了它们的宿主星系，甚至哈勃太空望远镜（HST）也无法利用详细的点扩散函数（PSF）建模技术来探测这些波长的宿主星系。在这项研究中，我们产生模拟图像的样本z=7类星体提取的BlueTides模拟，并应用马尔可夫链蒙特卡洛为基础的PSF建模，以确定其宿主星系的可探测性与詹姆斯韦伯太空望远镜（JWST）。虽然没有统计学意义的检测与HST，我们预测，在相同的波长和曝光时间JWST近红外相机成像将检测到约50%的类星体宿主星系。我们研究了各种观测策略，发现长波长滤波器中的NIRCam宽带成像导致成功探测类星体宿主的比例最高，在5 ks的曝光时间内探测到>80%的明亮类星体宿主。在NIRCam宽波段滤波器中，需要约5 k s的曝光时间来探测大多数宿主星系，然而，即使用MIRI进行10 k s的曝光，也会导致<30%的宿主星系探测成功。我们发现星系的属性和它们的可探测性之间没有显着的趋势。PSF模型可以准确地恢复主机的大小，半径和空间分布的大规模的发射，占中央核心被污染的残余类星体通量。在解释使用PSF建模测量的主机属性时应小心。
The BoRG-$JWST$ Survey: Abundance and Mass-to-light Ratio of Luminous $z=7-9$ Galaxies from Independent Sight Lines with NIRSpec
University of California, Los Angeles（加州大学洛杉矶分校）；The University of Texas at Austin（德克萨斯大学奥斯汀分校）；University of Geneva（日内瓦大学）；California Institute of Technology（加州理工学院）；National Astronomical Research Institute of Thailand (NARIT)（泰国国家天文研究所）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；Max Planck Institut für Astronomie（马克斯·普朗克天体物理研究所）；University of Melbourne（墨尔本大学）
Exploring the ultra-faint dwarf Bootes I using JWST and HST: Metallicity distribution and binaries
Università Degli Studi di Padova（帕多瓦大学）；Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Padova（意大利国家天体物理研究所帕多瓦天文台）；Research School of Astronomy and Astrophysics, Australian National University（澳大利亚国立大学天文与天体物理研究学院）；South-Western Institute for Astronomy Research, Yunnan University（云南大学西南天文研究所）
Validating z > 7.5 Lyman Break Galaxy candidates in the COSMOS field with JWST/PASSAGE
Minnesota Institute for Astrophysics, University of Minnesota（明尼苏达大学天体物理研究所）；INAF, Osservatorio Astronomico di Padova（意大利国家天体物理研究所帕多瓦天文台）；International Centre for Radio Astronomy Research, University of Western Australia（西澳大利亚大学国际射电天文研究中心）；Research School of Astronomy and Astrophysics, Australian National University（澳大利亚国立大学天文学与天体物理学研究学院）；Space Telescope Science Institute（太空望远镜科学研究所）；Stockholm University, Department of Astronomy（斯德哥尔摩大学天文学系）；University of California, Los Angeles, Department of Physics and Astronomy（加州大学洛杉矶分校物理与天文学系）；IPAC, California Institute of Technology（加州理工学院IPAC）
