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20112026
most citedHubble Space Telescope Observations of Field Ultracool Dwarfs at High Galactic Latitude

45 citations · 89 across the 27 of their papers we have counts for

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15 papers · 1 filter

astro-ph.GA2025★ 1 cited

Little red dot variability over a century reveals black hole envelope via a giant Einstein cross

Zijian Zhang, Mingyu Li, Masamune Oguri +79

"Little red dots" (LRDs) represent a new population of astronomical objects uncovered by JWST whose nature remains debated. Although many LRDs are suspected as active galactic nucl…

astro-ph.HE2025

A Deep Chandra X-ray Survey of a Luminous Quasar Sample at 7

Xiangyu Jin, Feige Wang, Jinyi Yang +11

We present new Chandra observations of seven luminous quasars at . Combined with archival Chandra observations of all other known quasars, they form nearly complete X-ray ob…

astro-ph.GA2025

COSMOS-3D: Dense Circumnuclear Gas across Black Hole Growth Phases at z ~ 3

Zi-Jian Li, Siwei Zou, Jianwei Lyu +25

We report the discovery of two broad-line X-ray AGNs (cid_414 and cid_947) at z ~ 3 identified in the JWST Cycle 3 COSMOS-3D program using NIRCam F444W grism spectroscopy. Both exh…

astro-ph.GA2025

A JWST/NIRSpec Integral Field Unit Survey of Luminous Quasars at z ~ 5-6 (Q-IFU): Rest-frame Optical Nuclear Properties and Extended Nebulae

Weizhe Liu, Xiaohui Fan, Richard Green +10

It remains debatable how billion-solar-mass supermassive black holes (SMBHs) form and evolve within the first billion years. We report results from a James Webb Space Telescope (JW…

astro-ph.GA2025

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…

astro-ph.CO2025

First constraints on the local ionization topology in front of two quasars at z ~ 7.5

Timo Kist, Joseph F. Hennawi, Frederick B. Davies +10

Thus far, Lyman- damping wings towards quasars have been used to probe the \textit{global} ionization state of the foreground intergalactic medium (IGM). A new parameterization…

astro-ph.GA2025

AGNs in the extremely overdense galaxy region BOSS 1441: A Chandra observation

Jiahua Wu, Liming Dou, Zheng Cai +6

We present a Chandra/ACIS-I study of X-ray sources in BOSS 1441, a protocluster at that exhibits a prominent overdensity of Ly emitters (LAEs). Using a 45 ks obs…

astro-ph.GA2025★ 1 cited

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…

astro-ph.GA2025★ 4 cited

SAPPHIRES: Extremely Metal-Poor Galaxy Candidates with at from Deep JWST/NIRCam Grism Observations

Tiger Yu-Yang Hsiao, Fengwu Sun, Xiaojing Lin +19

Population III stars, the hypothetical first generation metal-free stars, have yet to be discovered. Even after three years of successful JWST operations, studies have shown that m…

astro-ph.GA2025★ 1 cited

The Large-scale Environments of Low-luminosity AGNs at and Implications for Their Host Dark Matter Halos from a Complete NIRCam Grism Redshift Survey

Xiaojing Lin, Xiaohui Fan, Fengwu Sun +19

We study the large-scale environments and clustering properties of 28 low-luminosity AGNs at in the GOODS-N field. Our sample, identified from the JWST NIRCam Imaging and…

astro-ph.GA2025★ 2 cited

Counting Little Red Dots at with Ground-based Surveys and Spectroscopic Follow-up

Yilun Ma, Jenny E. Greene, David J. Setton +13

Little red dots (LRDs) are a population of red, compact objects discovered by JWST at . At , they are roughly 100 times more abundant than UV-selected quasars. However,…

astro-ph.GA2025★ 2 cited

Bridging Quasars and Little Red Dots: Insights into Broad-Line AGNs at from the First JWST COSMOS-3D Dataset

Xiaojing Lin, Xiaohui Fan, Feige Wang +30

We report the discovery of 13 broad-line AGNs at from the first 10% data of the JWST Cycle 3 Treasury Program COSMOS-3D. These AGNs are identified by their broad H o…

astro-ph.GA2025★ 1 cited

The Luminosity Function and Clustering of H Emitting Galaxies at from a Complete NIRCam Grism Redshift Survey

Xiaojing Lin, Eiichi Egami, Fengwu Sun +20

We study the luminosity function (LF) and clustering properties of 888 H emitters (HAEs) at in the GOODS-N field. The sample, built from JWST CONGRESS and FRESCO…

astro-ph.GA2025★ 3 cited

Slitless Areal Pure-Parallel HIgh-Redshift Emission Survey (SAPPHIRES): Early Data Release of Deep JWST/NIRCam Images and Spectra in MACS J0416 Parallel Field

Fengwu Sun, Yoshinobu Fudamoto, Xiaojing Lin +25

We present the early data release (EDR) of SAPPHIRES, a JWST Cycle-3 Treasury imaging and spectroscopic survey using the powerful NIRCam wide-field slitless spectroscopic (WFSS) mo…

astro-ph.GA2025

Medium-band Astrophysics with the Grism of NIRCam In Frontier fields (MAGNIF): Spectroscopic Census of H Luminosity Functions and Cosmic Star Formation at and 6.3

Shuqi Fu, Fengwu Sun, Linhua Jiang +35

We measure H luminosity functions (LFs) at redshifts and 6.3 using the JWST MAGNIF (Medium-band Astrophysics with the Grism of NIRCam In Frontier fields) survey. MA…