activity
20242026
most citedDestratification in the Progenitor Interior of the Mg-rich Supernova Remnant N49B

2 citations · 2 across the 5 of their papers we have counts for

collaborators

7 papers

astro-ph.HE2026

The Impact of the New Fe Decay Rates on Fe and Al Nucleosynthesis in Massive Stars

Bingyang Tan, Wenyu Xin, Ruizheng Jiang +2

The diffuse -ray emission from short-lived radioactive Al and Fe provides a direct probe of ongoing nucleosynthesis in the Galaxy. However, theoretical models have…

astro-ph.SR2026

Comparing explodability predictions from a parameter-optimized semi-analytic model with structure-based progenitor criteria

Yuxin U. Wu, Hideyuki Umeda, Koh Takahashi

Three-dimensional (3D) simulations of neutrino-driven core-collapse supernovae are among the most reliable tools for predicting explosion outcome. However, their high computational…

astro-ph.GA2026

Chemical Abundance Ratios of Nitrogen Rich Galaxies Identified at : Observational Demographics and Models

Kuria Watanabe, Masami Ouchi, Kimihiko Nakajima +13

We present chemical abundance ratios of 8 nitrogen-rich ([N/O]) galaxies at identified by the first 4 years of the JWST observations, and compare these ratios wi…

astro-ph.GA2025

Fe Abundances of Early Galaxies at Derived with Deep JWST Spectra

Minami Nakane, Masami Ouchi, Kimihiko Nakajima +12

We derive Fe-abundance ratios of 7 galaxies at with whose JWST/NIRSpec spectra achieve very high signal-to-noise ratios, , a…

astro-ph.GA2024

Low [O/Fe] Ratio in a Luminous Galaxy at the Early Cosmic Epoch (): Signature of Short Delay Time or Bright Hypernovae/Pair-Instability Supernovae?

Minami Nakane, Masami Ouchi, Kimihiko Nakajima +12

We present an [O/Fe] ratio of a luminous galaxy GN-z11 at derived with the deep public JWST/NIRSpec data. We fit the medium-resolution grating (G140M, G235M, and G395M) d…

astro-ph.GA2024

Strong He I Emission Lines in High N/O Galaxies at Identified in JWST Spectra: High He/H Abundance Ratios or High Electron Densities?

Hiroto Yanagisawa, Masami Ouchi, Kuria Watanabe +14

We present HeI/H-flux and He/H-abundance ratios in three JWST galaxies with significant constraints on N/O-abundance ratios, GS-NDG-9422, RXCJ2248-ID, and GLASS150008 at $z\sim…