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21 papers · 1 filter
Ionizing Photon Production Efficiencies and Chemical Abundances at Cosmic Dawn Revealed by Ultra-Deep Rest-Frame Optical Spectroscopy of JADES-GS-z14-0
Jakob M. Helton, Jane E. Morrison, Kevin N. Hainline +40
JWST has discovered an early period of galaxy formation that was more vigorous than expected, which has challenged our understanding of the early Universe. In this work, we present…
JWST observes the assembly of a massive galaxy at z~4
Aayush Saxena, Roderik A. Overzier, Catarina Aydar +18
We present JWST observations of the radio galaxy TGSSJ1530+1049, spectroscopically confirmed at . NIRCam images and NIRSpec/IFU spectroscopy (R=2700) show that TGSSJ1530+104…
JWST/MIRI Imaging of the Warm Dust Component of the Epsilon Eridani Debris Disk
Schuyler G. Wolff, András Gáspár, George Rieke +4
We present JWST/MIRI observations of the debris disk surrounding the nearby, solar analog Epsilon Eridani obtained as part of the Archetypal Debris Disk GTO program. Multi-waveleng…
The Relation Between AGN and Host Galaxy Properties in the JWST Era: II. The merger-driven evolution of Seyferts at Cosmic Noon
Nina Bonaventura, Jianwei Lyu, George H. Rieke +3
In Paper I, we exploited the unsurpassed resolution and depth of JWST/NIRCam imagery to investigate the relationship between AGN and host-galaxy properties in the JWST era, finding…
Confirming Near- to Mid-IR Photometrically-Identified Obscured AGNs in the JWST era
George H. Rieke, Yang Sun, Jianwei Lyu +6
We evaluate the underlying assumptions for the identification of Active Galactic Nuclei (AGNs) through near- and mid-infrared photometry and spectral energy distribution (SED) fitt…
Quasar Radiative Feedback May Suppress Galaxy Growth on Intergalactic Scales at
Yongda Zhu, Eiichi Egami, Xiaohui Fan +27
We present observational evidence that intense ionizing radiation from a luminous quasar suppresses nebular emission in nearby galaxies on intergalactic scales at . Using JW…
JADES-GS-z14-1: A Compact, Faint Galaxy at with Weak Metal Lines from Extremely Deep JWST MIRI, NIRCam, and NIRSpec Observations
Zihao Wu, Daniel J. Eisenstein, Benjamin D. Johnson +29
JWST has shed light on galaxy formation and metal enrichment within 300 Myr of the Big Bang. While luminous galaxies at often show significant [O III]4959, 5007 emissi…
The quasar ULAS J1120+0641 May Never Reach a "Normal" Black Hole to Stellar Mass Ratio
Meredith A. Stone, George H. Rieke, Jianwei Lyu +4
JWST observations of quasars in the Epoch of Reionization have revealed that many lie in host galaxies that are severely undermassive relative to the supermassive black holes. It i…
A Promise for the JWST era: Massive black holes directly collapsed from wave dark matter haloes, and Star formation in and around their accretion flows
Xiaobo Dong, Yongda Zhu, Marcia Rieke +7
There are several puzzling phenomena from recent JWST observations, which seem to push the standard ΛCDM cosmology over the edge. All those puzzles can be understood in a coherent…
Searching for Planets Orbiting ~Eridani with JWST/NIRCam
Jorge Llop-Sayson, Charles Beichman, Geoffrey Bryden +10
We present observations of \epseri~with the JWST/NIRCam coronagraph aimed at imaging planets orbiting within this system. In particular, these observations targeted (1) the Jupiter…
SMILES Data Release II: Probing Galaxy Evolution during Cosmic Noon and Beyond with NIRSpec Medium-Resolution Spectra
Yongda Zhu, Nina Bonaventura, Yang Sun +12
We present the second data release of the Systematic Mid-Infrared Instrument (MIRI) Legacy Extragalactic Survey (SMILES), focusing on JWST/NIRSpec medium-resolution spectroscopy of…
Discovery of Volatile Gas in the Giant Impact Disk around the 150-Myr old HD 23514
Kate Y. L. Su, Attila Moór, Chengyan Xie +8
We report the discovery of CO gas emission around HD 23514, an F5V star in the 150 Myr-old Pleiades cluster, hosting one of the rare giant-impact disks with unique minera…
Beyond the Dot: an LRD-like nucleus at the Heart of an IR-Bright Galaxy and its implications for high-redshift LRDs
Pierluigi Rinaldi, George H. Rieke, Zihao Wu +23
Little Red Dots (LRDs) are compact, red sources discovered by JWST at high redshift (), marked by distinctive 'V-shaped' spectral energy distributions (SEDs) and often…
The Identification of Two JWST/NIRCam-Dark Starburst Galaxies at with ALMA
Fengwu Sun, Jinyi Yang, Feige Wang +20
We analyze two dusty star-forming galaxies at . These galaxies are selected from the ASPIRE survey, a JWST Cycle-1 medium and ALMA Cycle-9 large program targeting 25 quasars…
The Stellar Populations and Rest-Frame Colors of Star-Forming Galaxies at : Exploring the Impact of Filter Choice and Star Formation History Assumption with JADES
Jakob M. Helton, Stacey Alberts, George H. Rieke +30
Our understanding of the physical properties of star-forming galaxies during the Epoch of Reionization (EoR, at ) suffers from degeneracies among the apparent properties of…
Deciphering the Nature of Virgil: An Obscured AGN Lurking Within an Apparently Normal Lyman-α Emitter During Cosmic Reionization
Pierluigi Rinaldi, Pablo G. Pérez-González, George H. Rieke +46
We present a comprehensive analysis of the MIRI Extremely Red Object Virgil, a Lyman- emitter at with the photometric properties of a Little Red D…
The First Photometric Evidence of a Transient/Variable Source at z>5 with JWST
Christa DeCoursey, Eiichi Egami, Fengwu Sun +27
The James Webb Space Telescope (JWST) discovered 79 transients out to 4.8 through the JADES Transient Survey (JTS), but the JTS did not find any 5 transients. Here,…
Extreme Neutral Outflow in a non-AGN Quiescent Galaxy at z~1.3
Yang Sun, Zhiyuan Ji, George H. Rieke +8
We report the discovery of a substantial sodium doublet (Na D 5890, 5896Å)-traced neutral outflow in the quiescent galaxy JADES-GS-206183 at . Its JWST/NIRSpec-MSA spe…
A Potential Link between Nuclear Winds and Cold Gas Outflows on Kiloparsec Scales in Reionization-Era Quasars
Yongda Zhu, Marcia J. Rieke, Luis C. Ho +23
Feedback from accreting supermassive black holes may regulate galaxy evolution, but statistical evidence linking nuclear winds to kiloparsec-scale cold gas outflows remains limited…
The Relation Evolution from z 6 to the Present Epoch
Yang Sun, George H. Rieke, Jianwei Lyu +5
The ratio between the stellar mass of a galaxy, , and that of its central supermassive black hole (SMBH), , the ``Magorrian'' relationship, traces their coevoluti…
Unveiling the Aromatic and Aliphatic Universe at Redshifts 0.2--0.5 with JWST NIRCam/WFSS
Jianwei Lyu, Xuejuan Yang, Aigen Li +4
Utilizing deep NIRCam/WFSS data from JWST's FRESCO program, we spectroscopically survey the 3.3 aromatic and 3.4 aliphatic C--H stretching emission bands of polycyclic ar…