Chunyan Jiang

Ly α Escape in JWST/NIRCam F430M-selected H α Emitters at z ≃ 5.5

Cheng Cheng, Zhen-Ya Zheng, Chunyan Jiang, Fengwu Sun et autres

Abstract We study the Ly α escape fraction ( f esc ) in a H α -selected sample of star-forming galaxies at z ≃ 5.5, identified via JWST/NIRCam F430M excess and covered by archival Very Large Telescope (VLT) MUSE data. By anchoring …

cn, cl, fr, us (code pays fourni par la source)

Local Analogs of Little Red Dots: Optical Variability and Evidence for an Active Galactic Nucleus Origin

Ruqiu Lin, Zhen-Ya Zheng, Junxian Wang, Luis C. Ho et autres

Abstract Little red dots (LRDs) draw extensive attention because of their unique observational characteristics and apparent overabundance in the early Universe, raising new insights into early black hole formation and growth. Early studies show that LRDs exhibit weak variability in photometry and …

cn, us (code pays fourni par la source)

LCEz4-M1: A Lyman Continuum Emitter Candidate at z = 4.444 in the MUSE Hubble Ultra Deep Field

Shuairu Zhu, Zhen-Ya Zheng, Fuyan Bian, Fang-Ting Yuan et autres

Abstract High-redshift Lyman continuum emitters (LCEs) are crucial for understanding how galaxies ionize the neutral hydrogen in the epoch of reionization. However, detected LCEs at z > 4 are quite rare. Here, we report an LCE candidate at z = 4.444, dubbed …

cn, us (code pays fourni par la source)

Mock Observations for the CSST Mission: Multi-Channel Imager—The Cluster Field

Yushan Xie, Xiaokai Chen, Shuai Feng, Zhaojun Yan et autres

Abstract The Multi-Channel Imager (MCI), one of the instruments aboard the Chinese Space Station Survey Telescope, is designed to simultaneously observe the sky in three filters, covering wavelengths from near-ultraviolet to near-infrared. With its large field of view ( 7 . ′ …

cn (code pays fourni par la source)

Mock Observations for the CSST Mission: Multi-Channel Imager--Instrument Simulation

Zhaojun Yan, Huanyuan Shan, Zhen-Ya Zheng, Xiyan Peng et autres

The Chinese Space Station Survey Telescope (CSST), a two-meter aperture astronomical space telescope under China's manned space program, is equipped with multiple back-end scientific instruments. As an astronomical precision measurement module of the CSST, the Multi-Channel Imager (MCI) can cover a wide …

A Timescale-Resolved Analysis of the Breathing Effect in Quasar Broad Line Regions

Chunyan Jiang, Jin‐Xing Wang, Hao Sou

The single-epoch virial method is a fundamental tool for estimating supermassive black hole (SMBH) masses in large samples of AGNs and has been extensively employed in studies of SMBH-galaxy co-evolution across cosmic time. However, since this method is calibrated using reverberation-mapped AGNs, …

MCI: Multi-Channel Imager on the Chinese Space Station Survey Telescope

Zhen-Ya Zheng, C. F. Xu, Xiaohua Liu, Yonghe Chen et autres

The Multi-Channel Imager (MCI) is a powerful near-ultraviolet (NUV) and visible imager onboard the Chinese Space Station Survey Telescope (CSST). The MCI provides three imaging channels, which are the NUV channel, the Blue channel and the Red channel, with the wavelength range …

Lyman Continuum Leakers at z > 3 in the GOODS-S Field: Mergers Dominated

Shuairu Zhu, Zhen-Ya Zheng, Fang-Ting Yuan, Chunyan Jiang et autres

Abstract Understanding the ionizing photon escape from galaxies is essential for studying cosmic reionization. With a sample of 23 Lyman continuum (LyC) leakers (among which eight are high-confidence leakers) at 3 < z < 4.5 in the GOODS-S field, we investigate their …

cn (code pays fourni par la source)

Discovery of Local Analogs to JWST’s Little Red Dots

Ruqiu Lin, Zhen-Ya Zheng, Chunyan Jiang, Fang-Ting Yuan et autres

Abstract Recently, the James Webb Space Telescope has revealed a new class of high-redshift (high-z, z > 4) compact galaxies that are red in the rest-frame optical and blue in the rest-frame UV with V-shaped spectral energy distributions (SEDs), referred to as …

Scattered synchrotron emission and a giant torus revealed in polarized light in the nearest radio galaxy Centaurus A

Francisco Marı́n, Damien Hutsemékers, Chunyan Jiang, R. Antonucci et autres

Centaurus A (Cen A) is the closest radio galaxy and a prime example of a low-luminosity active galactic nucleus (AGN), exhibiting complex emissions across the electromagnetic spectrum. The nature of its continuum emission, particularly the mechanisms powering it, has been a subject …

Regulating intermolecular interactions for stable multifunctional organic–inorganic metal halide hybrid glasses

Chunyan Jiang, Jing Yan, Jianrong Qiu, Mingmei Wu et autres

, resulting in a reversible and rapid crystal-glass transformation accompanied by high contrast luminescence switching upon heating. Conversely, the weaker electrostatic attraction and smaller melt fragility in B2SC5 result in a stable glass, and transparent glass ceramic can be fabricated by assisted …

cn (code pays fourni par la source)

Discovery of Local Analogs to JWST's Little Red Dots

Ruqiu Lin, Zhen-Ya Zheng, Chunyan Jiang, Fang-Ting Yuan et autres

Recently, the James Webb Space Telescope (JWST) has revealed a new class of high redshift (high-$z$, $z>4$) compact galaxies which are red in the rest-frame optical and blue in the rest-frame UV as V-shaped spectral energy distributions (SEDs), referred to as "Little …