3 papers
astro-ph.CO2026
Low-redshift-agnostic BAO Constraints on Binned Dark-energy Density Evolution from DESI DR1 and DR2
Qian-Mo Liu, Gong-Bo Zhao
We present a low-redshift-agnostic compression of anisotropic baryon acoustic oscillation (BAO) distances to constrain the normalized dark-energy density evolution, $X(z)\equiv ρ_{…
astro-ph.SR2025
The survey of DA double white dwarf candidates based on DESI EDR
Ziyue Jiang, Hailong Yuan, Zhongrui Bai +9
Mergers of double white dwarfs are considered significant potential progenitors of type Ia supernovae. Although there is no direct observational evidence to definitively determine…
astro-ph.GA2025
The origin of the metallicity difference between star-forming and passive galaxies: Insights from ν2GC semi-analytic model
Qiansheng Liu, Takashi Okamoto, Taira Oogi +1
We investigate the origin of the observed metallicity difference between star-forming and passive galaxies using the semi-analytic galaxy formation model nu2GC. Our fiducial model…