MIDIS: The identification of deep MIRI-red sources as candidates for extreme Balmer-break and line emitting galaxies at high-z
Cosmic Dawn Center (DAWN)(宇宙黎明中心);DTU-Space, Technical University of Denmark(丹麦技术大学空间科学部);Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯·玻尔研究所);Leiden Observatory, Leiden University(莱顿大学莱顿天文台);Department of Astronomy, Oskar Klein Centre, Stockholm University(斯德哥尔摩大学奥斯卡·克莱因中心天文学系);Department of Astronomy, University of Geneva(日内瓦大学天文学系);Centro de Astrobiología (CAB), CSIC-INTA(CSIC-INTA天体生物学中心);Space Telescope Science Institute(太空望远镜科学研究所)
I. Jermann, G. Brammer, S. Gillman, T. R. Greve, L. A. Boogaard, J. Melinder, R. A. Meyer, P. G. Pérez-González, P. Rinaldi, J. L. Colina, G. Östlin, G. Wright,… 展开作者
I. Jermann, G. Brammer, S. Gillman, T. R. Greve, L. A. Boogaard, J. Melinder, R. A. Meyer, P. G. Pérez-González, P. Rinaldi, J. L. Colina, G. Östlin, G. Wright, J. Álvarez-Márquez, A. Bik, K. I. Caputi, A. Crespo Gómez, L. Costantin, J. Hjorth, E. Iani, S. Kendrew, A. Labiano, D. Langeroodi, F. Peissker, C. Prieto-Jiménez, J. P. Pye, T. V. Tikkanen, F. Walter, P. van der Werf, T. Henning, M. Shuntov
We investigate the detection and nature of 5.6~μm MIRI-red sources in the MIRI Deep Imaging Survey (MIDIS), covering 2.4~arcmin$^2$ in the Hubble Ultra Deep Field. MIDIS is the deepest JWST/MIRI survey to date, probing faint limits and enabling studies of rare high-redshift galaxy populations. We define MIRI-red sources as those detected at 5$σ$ significance in MIRI/F560W with red colors: $m_{\rm F444W} - m_{\rm F560W} \ge 0.5$. Using an empirical methodology, we estimate the purity and completeness of MIRI detections and find that a 5-sigma detection at 28.75 mag has a purity of 92\% and completeness of 54\%. We identify seven MIRI-red galaxy candidates, including an F115W dropout consistent with a high-redshift galaxy candidate. We explore possible physical origins for the MIRI-red population, including active galactic nuclei, dust-obscured galaxies, extreme emission-line galaxies, evolved stellar populations, and Little Red Dots (LRDs). Given the proximity of the F444W and F560W filters and the depth of MIDIS, MIRI-red galaxies are consistent with emission-line galaxies with $EW_0(Hα) \ge 750$ Å or $EW_0(Hβ+ [OIII]) \ge 600$ Å, or high-redshift Balmer breaks of at least 1.6. We also discuss an extreme MIRI-red galaxy undetected in F444W, a potential MIRI-only source, for which we derive $EW_0(Hα) \sim 6000$ Å and $EW_0(Hβ+ [OIII]) \sim 4000$ Å, or high-$z$ LRD analogs with Balmer breaks of 6.3. Finally, we find fewer MIRI-red detections than expected from extrapolations of the H$α$ or H$β$+[OIII] line luminosity functions, consistent with previous deep searches, while the absence of $z>10$ LRD candidates agrees with theoretical expectations for the MIDIS volume.
MIDIS: Strong (Hb + [OIII]) and Ha emitters at redshift $z \simeq 7-8$ unveiled with JWST/NIRCam and MIRI imaging in the Hubble eXtreme Deep Field (XDF)
MIDIS: Quantifying the AGN component of X-ray-detected galaxies
Cosmic Dawn Center (DAWN)(宇宙黎明中心);DTU Space(丹麦技术大学空间研究所);University of Leicester(莱斯特大学);Centro de Astrobiologıa (CAB), CSIC-INTA(西班牙天体生物学中心);Durham University(杜伦大学);Stockholm University(斯德哥尔摩大学);University of Groningen(格罗宁根大学);University of Arizona(亚利桑那大学);Heidelberg University(海德堡大学);Space Telescope Science Institute (STScI)(太空望远镜科学研究所);Universität zu Köln(科隆大学);European Space Agency(欧洲航天局);University of Copenhagen(哥本哈根大学);Telespazio UK(泰莱斯帕齐奥英国公司);University of Vienna(维也纳大学);Université Paris-Saclay(巴黎萨克雷大学);Dublin Institute for Advanced Studies(都柏林高等研究院)
MIDIS: Strong H$β$+[OIII] Line Emitters at $z \geq 9$
Space Telescope Science Institute(太空望远镜科学研究所);Cosmic Dawn Center (DAWN)(宇宙黎明中心);DTU-Space, Technical University of Denmark(丹麦技术大学空间科学与技术学院);Department of Astronomy, Stockholm University(斯德哥尔摩大学天文学系);Centro de Astrobiología, CSIC-INTA(西班牙国家航空航天技术研究院与西班牙高等科学研究理事会天文生物中心);Max Planck Institut für Astronomie(马克斯·普朗克天文学研究所);Centre for Extragalactic Astronomy, Department of Physics, Durham University(杜伦大学物理系河外星系研究中心)
MIDIS: Unveiling the Star Formation History in massive galaxies at $1<z<4.5$ with spectro-photometric analysis
Centro de Astrobiología (CAB), CSIC-INTA(天体生物学中心 (CAB),西班牙高等科学研究委员会-国家航空航天技术研究所);Kapteyn Astronomical Institute, University of Groningen(卡佩因天文研究所,格罗宁根大学);European Space Agency (ESA), European Space Astronomy Centre (ESAC)(欧洲空间局 (ESA),欧洲空间天文中心 (ESAC));Steward Observatory, University of Arizona(斯图尔德天文台,亚利桑那大学);Max Planck Institut für Astronomie(马克斯·普朗克天文学研究所);Department of Astronomy, University of Geneva(日内瓦大学天文学系);Department of Astronomy, Oskar Klein Centre, Stockholm University(奥斯卡·克莱因中心天文学系,斯德哥尔摩大学);DTU Space, Technical University of Denmark(丹麦技术大学空间研究所);Cosmic Dawn Center (DAWN)(宇宙黎明中心 (DAWN));DARK, Niels Bohr Institute, University of Copenhagen(DARK研究中心,尼尔斯·玻尔研究所,哥本哈根大学);I.Physikalisches Institut der Universität zu Köln(科隆大学第一物理研究所);Leiden Observatory, Leiden University(莱顿天文台,莱顿大学);European Space Agency, Space Telescope Science Institute(欧洲空间局,太空望远镜科学研究所);UK Astronomy Technology Centre, Royal Observatory Edinburgh(英国天文学技术中心,爱丁堡皇家天文台);Dept. of Physics and Astronomy, University College London(伦敦大学学院物理与天文学系)
Balmer Transition Signatures from Gas-Enshrouded, Dust-Poor Active Galactic Nuclei
Kavli Institute for Astronomy and Astrophysics, Peking University(北京大学科维理天文与天体物理研究所);Department of Astronomy, School of Physics, Peking University(北京大学物理学院天文学系)
A UV-Luminous Galaxy at z=11 with Surprisingly Weak Star Formation Activity
The University of Tokyo(东京大学);Centro de Astrobiología (CAB), CSIC-INTA(天体生物学中心 (CAB),西班牙国家科学技术研究委员会-国家航空航天技术研究所);National Astronomical Observatory of Japan(日本国立天文台);SOKENDAI (The Graduate University for Advanced Studies)(综合研究大学院大学);Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo(东京大学 Kavli宇宙物理数学研究所 (WPI));Center for Computational Astrophysics, Flatiron Institute(平顿研究所计算天体物理学中心);Kanazawa University(金泽大学)
Direct pathway to the Early Supermassive Black Holes: A Red Super-Eddington Quasar in a Massive Starburst Host at $z=7.2$
University of Toronto(多伦多大学);Dunlap Institute for Astronomy and Astrophysics(邓普天文学与天体物理学研究所);Cosmic Dawn Center (DAWN)(宇宙黎明中心);Niels Bohr Institute(尼尔斯·玻尔研究所);University of Copenhagen(哥本哈根大学);Max-Planck-Institut für extraterrestrische Physik(马克斯·普朗克地外物理研究所);Kavli Institute for Astronomy and Astrophysics(开普勒天文与天体物理研究所);Peking University(北京大学);Department of Astronomy, School of Physics, Peking University(北京大学物理学院天文学系);University of Texas, Austin(德克萨斯大学奥斯汀分校);Weinberg Institute for Theoretical Physics(温伯格理论物理研究所);Cosmic Frontier Center(宇宙前沿中心);Centro de Astrobiología (CAB)(天体生物学中心);CSIC-INTA(西班牙国家研究委员会-国家航空航天技术研究所)
Mysteries of Capotauro: investigating the puzzling nature of an extreme F356W-dropout
Università di Padova(帕多瓦大学);INAF, Osservatorio Astronomico di Padova(意大利国家天体物理研究所帕多瓦天文台);INAF, Osservatorio Astronomico di Roma(意大利国家天体物理研究所罗马天文台);NSF’s National Optical-Infrared Astronomy Research Laboratory(美国国家光学-红外天文研究实验室);Department of Astronomy, The University of Texas at Austin(德克萨斯大学奥斯汀分校天文学系);Dipartimento di Fisica, Università di Roma Sapienza(罗马第一大学物理学系);Astrophysics Science Division, NASA Goddard Space Flight Center(NASA戈达德太空飞行中心天体物理学部);Department of Physics and Astronomy, University of Kansas(堪萨斯大学物理与天文学系)
Out of oxygen: Extremely metal-poor galaxy candidates identified at $2.5 < z < 6.5$ with deep JADES medium-band imaging
University of Oxford(牛津大学);Cosmic Dawn Center (DAWN)(宇宙黎明中心);Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯·玻尔研究所);Scuola Normale Superiore(比萨高等师范学院);Sorbonne Université(索邦大学);Jodrell Bank Centre for Astrophysics, University of Manchester(曼彻斯特大学乔德雷尔银行天体物理中心);European Southern Observatory(欧洲南方天文台)
利用JADES中波段成像数据,通过光度学方法识别出2.5 < z < 6.5范围内的极端金属贫乏星系候选者,这些候选者表现出强的Hα光度增强但[O III] + Hβ增强较弱,可能表明极低金属licity。