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20242026
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astro-ph.GA2026

CHANG-ES. XXXVIII. A Thin Radio Halo Shaped by Slow Cosmic-Ray Transport in the Quiescent Galaxy NGC 4565

Jianghui Xu, Jiang-Tao Li, Guilin Liu +11

We present the VLA C-array S-band (2--4 GHz) radio continuum observations of the nearby edge-on spiral galaxy NGC 4565, a target from the Continuum Halos in Nearby Galaxies - an EV…

astro-ph.GA2025

CO in MASsive Spirals (CO-MASS): an IRAM 30m CO emission line survey of the CGM-MASS sample

Yu Huang, Jiangtao Li, Yan Jiang +4

There exist extremely massive spiral galaxies in isolated environments, with stellar masses several times that of the Milky Way, yet their star formation rates (SFRs) are comparabl…

astro-ph.GA2024

CHANG-ES XXXV: Cosmic Ray Transport and Magnetic Field Structure of NGC 3556 at 3 GHz

Jianghui Xu, Yang Yang, Jiang-Tao Li +7

Radio halos of edge-on galaxies are crucial for investigating cosmic ray propagation and magnetic field structures in galactic environments. We present VLA C-configuration S-band (…

astro-ph.GA2024

Probing the He II re-Ionization ERa via Absorbing C IV Historical Yield (HIERACHY) II: Project Design, Current Status, and Examples of Initial Data Products

Jiang-Tao Li, Xiaodi Yu, Huiyang Mao +22

The He II reionization epoch is expected to take place at . In this stage, the helium and metals in the inter-galactic medium (IGM) are further ionized with additional co…

astro-ph.GA2024

eDIG-CHANGES III: the lagging eDIG revealed by multi-slit spectroscopy of NGC 891

Li-Yuan Lu, Jiang-Tao Li, Carlos J. Vargas +9

The kinematic information of the extraplanar diffuse ionized gas (eDIG) around galaxies provides clues to the origin of the gas. The eDIG-CHANGES project studies the physical and k…

astro-ph.GA2024

eDIG-CHANGES II: Project Design and Initial Results on NGC 3556

Jiang-Tao Li, Li-Yuan Lu, Zhijie Qu +19

The extraplanar diffuse ionized gas (eDIG) represents ionized gases traced by optical/UV lines beyond the stellar extent of galaxies. We herein introduce a novel multi-slit narrow-…