2 papers
astro-ph.CO2026
Constraining and Comparing the Dynamical Dark Energy and f(R) Modified Gravity Models with Cosmological Distance Measurements
Shuai Feng, Yan Gong, Xiaohui Liu +2
We constrain and compare the CDM dynamical dark energy model and three modified gravity models using the current cosmological distance measurements, including 11…
astro-ph.SR2025
Optical Flares Detected on a Contact Binary: The First Photometric and Spectroscopic Analysis of a Long-period Low Mass Ratio Contact Binary HAT 307-0007476
Ling-Zhi Li, Kai Li, Xiang Gao +10
This paper presents the photometric and spectroscopic analysis of a long-period totally eclipsing contact binary (HAT 307-0007476) for the first time. This system is a low mass rat…