binary star systems 1metal-poor stars 1radial velocity variations 1spectroscopic monitoring 1stellar evolution 1
From the 1 of 3 linked papers with an AI index.
3 papers
astro-ph.SR2026
Long-term high-resolution spectroscopic monitoring of the evolved metal-poor binary PS Gem
V. G. Klochkova, V. E. Panchuk, J. K. Zhao +3
The paper reports three decades of high‑resolution spectroscopic observations of the metal‑poor binary star PS Gem, analyzing Hα line variations and radial velocities to characteri…
astro-ph.SR2026
The Stellar Abundances and Galactic Evolution Survey (SAGES). V. The First Data Release of the DDO51 Band
Qiqian Zhang, Zhou Fan, Gang Zhao +20
We present the first public data release of DDO51 band from the Stellar Abundances and Galactic Evolution Survey (SAGES), based on Nanshan One-meter Wide-field Telescope (NOWT) obs…
astro-ph.SR2025
The Stellar Abundances and Galactic Evolution Survey (SAGES). IV. Surface Gravity Estimation and Giant-Dwarf Separation with the DDO51 Filter
Qiqian Zhang, Zhou Fan, Gang Zhao +16
Reliable estimation of stellar surface gravity (log ) for a large sample is crucial for evaluating stellar evolution models and understanding galactic structure; However, it is…