activity
20222026
most citedRevisit NGC 5466 Tidal Stream with , SDSS/SEGUE and LAMOST

7 citations · 7 across the 8 of their papers we have counts for

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5 papers · 1 filter

astro-ph.SR2026

A chemo-dynamical search for planet-candidate hosts of possible extragalactic origin

Sun Tiancheng, Chen Xunzhou, Xiang Maosheng +2

To date, all known exoplanetary systems have been identified around stars currently residing in the Milky Way, whereas planets formed in external galaxies remain largely unexplored…

astro-ph.SR2026

Unraveling Year-Long Radial Velocity Variations in Red Clump Region -- I: Comprehensive analysis of a K0 Giant star, 2 Draconis

Udomlerd Srisuchinwong, Jianzhao Zhou, Huan-Yu Teng +18

Slow-rotating evolved stars frequently exhibit radial velocity (RV) variations on annual timescales, complicated by instrumental systematics and aliasing in the one-year regime. He…

astro-ph.SR2024

Relations of rotation and chromospheric activity to stellar age for FGK dwarfs from Kepler and LAMOST

Lifei Ye, Shaolan Bi, Jinghua Zhang +9

The empirical relations between rotation period, chromospheric activity, and age can be used to estimate stellar age. To calibrate these relations, we present a catalog, including…

astro-ph.SR2024

Detection of Solar-like Oscillations in Sub-giant and Red Giant Stars Using 2-minute Cadence TESS Data

Jianzhao Zhou, Shaolan Bi, Jie Yu +7

Based on all 2-minute cadence light curves from Sector 1 to 60, we provide a catalog of 8,651 solar-like oscillators, including frequency at maximum power (, wi…

astro-ph.SR2023

Age of FGK Dwarfs Observed with LAMOST and GALAH: Considering the Oxygen Enhancement

Tiancheng Sun, Zhishuai Ge, Xunzhou Chen +11

Varying oxygen abundance could impact the modeling-inferred ages. This work aims to estimate the ages of dwarfs considering observed oxygen abundance. To characterize 67,503 LAMOST…