activity
20242026
collaborators

7 papers

astro-ph.GA2026

First Statistical Study of Over 100 Magnified Stellar Events at Redshift with JWST

J. M. Palencia, Fengwu Sun, J. M. Diego +25

Highly magnified stars at cosmological distances () become detectable thanks to microlensing by intracluster stars near the critical curves of galaxy clusters. Multi…

astro-ph.GA2025

ALMA Lensing Cluster Survey: Molecular Gas Properties of Line-Emitting Galaxies from a Blind Survey

Kanako Narita, Bunyo Hatsukade, Seiji Fujimoto +16

We present results of a blind search for line-emitting galaxies using ALMA Lensing Cluster Survey data. We detected seven line emitters, one of which is [C\,{\sc ii}] at $z = 6.071…

astro-ph.GA2025

Primordial Rotating Disk Composed of 15 Dense Star-Forming Clumps at Cosmic Dawn

S. Fujimoto, M. Ouchi, K. Kohno +43

Early galaxy formation, initiated by the dark matter and gas assembly, evolves through frequent mergers and feedback processes into dynamically hot, chaotic structures. In contrast…

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. M…

astro-ph.GA2025

ALMA Lensing Cluster Survey: Physical characterization of near-infrared-dark intrinsically faint ALMA sources at z=2-4

Akiyoshi Tsujita, Kotaro Kohno, Shuo Huang +33

We present results from Atacama Large Millimeter/submillimeter Array (ALMA) spectral line-scan observations at 3-mm and 2-mm bands of three near-infrared-dark (NIR-dark) galaxies b…

astro-ph.GA2025

Identification of 40 gravitationally magnified stars in a galaxy at redshift of 0.725

Yoshinobu Fudamoto, Fengwu Sun, Jose M. Diego +44

Strong gravitational magnifications enable to detect faint background sources, resolve their internal structures, and even identify individual stars in distant galaxies. Highly mag…