Explanipedia

The evolution of rotation and activity for FGK dwarfs in LAMOST– <i>Kepler</i> field Open

Lifei Ye, Shaolan Bi, Liu Long, Tiancheng Sun, Jinghua Zhang , et al. · 2025

Based on the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and Gaia surveys, we compute the convective turnover time-scales of stars with the mass range of 0.7–1.4 ${\rm M}_{\odot }$ using the mesa code. We provide a c…

A Magnetic White Dwarf Formed through a Binary Merger within 35 Million Yr Open

Huahui Yan, Jiamao Lin, Rui-Hua Zheng, Li Wang, Genghao Liu , et al. · 2025

White dwarfs (WDs) represent the final evolutionary stage of most stars, typically originating from progenitor stars with masses below approximately 8–10 M ⊙ . Formation through single-star evolution generally requires at least 25 Myr, wit…

Chromospheric activity of FGKM-type dwarfs in open clusters up to 6 Gyr Open

Liu Long, Shaolan Bi, Lifei Ye, Tiancheng Sun, Jianzhao Zhou , et al. · 2025

The chromospheric activity of low-mass stars in open clusters is crucial for investigating activity–age–rotation relations. We present the chromospheric activity indicator ($R^{\prime }_{\rm H\alpha }$) of 8493 FGKM-type stars in 152 open …

Li-rich Unevolved Stars from LAMOST-MRS Open

Zeming Zhou, Jianrong Shi, Shaolan Bi, Hong-Liang Yan, Kaike Pan , et al. · 2025

Based on the spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope medium-resolution spectroscopic survey, we select a sample of 88 Li-rich unevolved star candidates. We redetermine their photospheric lithium abundance…

Asteroseismology of Long-period Variables with OGLE-IV Data: Using Global Seismic Parameters as Luminosity Indicators Open

Qiang 强 Xiong 熊, Tanda Li, Jie Yu, Zhiwen 志文 Li 李, Shaolan Bi , et al. · 2025

Long-period variables (LPVs) are high-luminosity red giants or supergiants with pulsation periods ranging from days to years. Many LPVs in the Large Magellanic Cloud (LMC) and Galactic bulge (BLG) have been continuously observed over a tim…

Binary evolution pathways to blue large-amplitude pulsators: Insights from HD 133729 Open

Zhengyang Zhang, Chengyuan Wu, Xianfei Zhang, Zhanwen Han, Bo Wang · 2025

Blue large-amplitude pulsators (BLAPs) are a recently identified class of pulsating stars distinguished by their short pulsation periods (2–60 minutes) and asymmetric light curves. This study investigated the evolutionary channel of HD 133…

Potential impact of the Sagittarius dwarf galaxy on the formation of young O-rich stars Open

Tiancheng Sun, Shaolan Bi, Xunzhou Chen, Yuqin Chen, Yuxi Lu , et al. · 2025

The Milky Way underwent significant transformations in its early history, characterised by violent mergers and satellite galaxy accretion. However, recent observations reveal notable star formation events over the past 4 Gyr, likely trigge…

Electromagnetic Nanocoils Based on InGaN Nanorings Open

Ziwen Yan, Peng Chen, Xianfei Zhang, Zili Xie, Xiangqian Xiu , et al. · 2025

Energy issues, including energy generation, conversion, transmission and detection, are fundamental factors in all systems. In micro- and nanosystems, dealing with these energy issues requires novel nanostructures and precise technology. H…

Electromagnetic Nanocoils Based on InGaN Nanorings Open

Ziwen Yan, Peng Chen, Xianfei Zhang, Zili Xie, Xiangqian Xiu , et al. · 2025

Energy issues, including energy generation, conversion, transmission and detection, are fundamental factors in all systems. In micro- and nanosystems, dealing with these energy issues requires novel nanostructures and precise technology. H…

Cavity Plasmon: Enhanced Luminescence Effect on InGaN Light Emitting Diodes Open

Yuyin Li, Jing Zhou, Ziwen Yan, Xianfei Zhang, Zili Xie , et al. · 2024

We fabricated polygonal nanoholes in the top p-GaN layer of the InGaN/GaN light-emitting diode, followed by the deposition of Au/Al metal thin film within the nanoholes to create metal microcavities, thereby constructing the surface plasmo…

Enhanced optical performance of GaN Micro-light-emitting diodes with a single porous layer Open

Ziwen Yan, Xianfei Zhang, Yuyin Li, Zili Xie, Xiangqian Xiu , et al. · 2024

High-efficiency micro-light-emitting diodes (Micro-LEDs) are key devices for next-generation display technology. However, when the mesa size is reduced to around tens of micrometers or less, the luminous efficiency is constrained by the "e…

Binary Evolution Pathways to Blue Large-Amplitude Pulsators: Insights from HD 133729 Open

Zhengyang Zhang, Chengyuan Wu, Xianfei Zhang, Bo Wang · 2024

Blue Large-Amplitude Pulsators (BLAPs) represent a recently identified class of pulsating stars distinguished by their short pulsation periods ($2 - 60$ minutes) and asymmetric light curves. This study investigated the evolutionary channel…

Potential impact of the Sagittarius dwarf galaxy on the formation of young O-rich stars Open

Tiancheng Sun, Shaolan Bi, Xunzhou Chen, Yuqin Chen, Chao Liu , et al. · 2024

The dataset used in the paper "Young O-rich Stars Migrated from the Outer Disc: Imprints of Sagittarius Accretion Event".

Relations of Rotation and Chromospheric Activity to Stellar Age for FGK Dwarfs from Kepler and LAMOST Open

Lifei Ye, Shaolan Bi, Jinghua Zhang, Tiancheng Sun, Liu Long , et al. · 2024

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 the masses and ages of 52,321 FGK dwarfs, 47,489 chromosphe…

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

Jianzhao Zhou, Shaolan Bi, Jie Yu, Yaguang Li, Xianfei Zhang , et al. · 2024

Based on all 2 minute cadence TESS light curves from Sector 1 to 60, we provide a catalog of 8651 solar-like oscillators, including frequency at maximum power ( , with its median precision σ = 5.39%), large frequency separation (Δ ν …

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

Lifei Ye, Shaolan Bi, Jinghua Zhang, Tiancheng Sun, Long Liu , et al. · 2024

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 the masses and ages of 52,321 FGK dwarfs, 47,489 chromosphe…

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

Jianzhao Zhou, Shaolan Bi, Jie Yu, Yaguang Li, Xianfei Zhang , et al. · 2024

Based on all 2-minute cadence $TESS$ light curves from Sector 1 to 60, we provide a catalog of 8,651 solar-like oscillators, including frequency at maximum power ($ν_{\rm max}$, with its median precision, $σ$=5.39\%), large frequency separ…

The Formation of Blue Large-amplitude Pulsators from White-dwarf Main-sequence Star Mergers Open

Xianfei Zhang, C. S. Jeffery, Jie Su, Shaolan Bi · 2023

Blue large-amplitude pulsators (BLAPs) are hot low-mass stars that show large-amplitude light variations likely due to radial oscillations driven by iron group opacities. Period changes provide evidence of both secular contraction and expa…

The formation of blue large-amplitude pulsators from white-dwarf main-sequence star mergers Open

Xianfei Zhang, C. S. Jeffery, Jie Su, Shaolan Bi · 2023

Blue large-amplitude pulsators (BLAPs) are hot low-mass stars which show large-amplitude light variations likely due to radial oscillations driven by iron-group opacities. Period changes provide evidence of both secular contraction and exp…

Imprints of Sagittarius accretion event: Young O-rich starsand discontinuous chemical evolution in Milky Way disc Open

Shaolan Bi, Tiancheng Sun, Xunzhou Chen, Yuqin Chen, Chao Liu , et al. · 2023

The Milky Way has undergone significant transformations in its early history, characterised by violent mergers and the accretion of satellite galaxies. Among these events, the infall of the satellite galaxy Gaia-Enceladus/Sausage is recogn…

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

Tiancheng Sun, Zhishuai Ge, Xunzhou Chen, Shaolan Bi, Tanda Li , et al. · 2023

Varying oxygen abundance could impact modeling-inferred ages. This work aims to estimate the ages of dwarfs considering observed oxygen abundance. To characterize 67,503 LAMOST and 4006 GALAH FGK-type dwarf stars, we construct a grid of st…

Investigating 16 Open Clusters in the Kepler/K2–Gaia DR3 Field. I. Membership, Binary Systems, and Rotation Open

Liu Long, Shaolan Bi, Jinghua Zhang, Xianfei Zhang, Liyun Zhang , et al. · 2023

Using data from Gaia Data Release 3 and Kepler/K2, we present a catalog of 16 open clusters with ages ranging from 4–4000 Myr that provides detailed information on membership, binary systems, and rotation. We assess the memberships in 5D p…

The Study on the Lasing Modes Modulated by the Dislocation Distribution in the GaN-Based Microrod Cavities Open

Yuyin Li, Peng Chen, Xianfei Zhang, Ziwen Yan, Tong Xu , et al. · 2023

Low-threshold lasing under pulsed optical pumping is demonstrated in GaN-based microrod cavities at room temperature, which are fabricated on the patterned sapphire substrates (PSS). Because the distribution of threading dislocations (TDs)…

Investigating 16 Open Clusters in the Kepler/K2-Gaia DR3 field. I. Membership, Binary, and Rotation Open

Liu Long, Shanlao Bi, Jinhua Zhang, Xianfei Zhang, Liyun Zhang , et al. · 2023

Using data from the Gaia Data Release 3 (Gaia DR3) and Kepler/K2, we present a catalog of 16 open clusters with ages ranging from 4 to 4000 Myr, which provides detailed information on membership, binary systems, and rotation. We assess the…

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

Tiancheng Sun, Zhishuai Ge, Xunzhou Chen, Shaolan Bi, Tanda Li , et al. · 2023

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 and 4,006 GALAH FGK-type dwarf stars, we construct a grid …

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

Tiancheng Sun, Zhishuai Ge, Xunzhou Chen, Shaolan Bi, Tanda Li , et al. · 2023

MESA (r12115) inlist files used in the preparation of the paper "Age of FGK Dwarfs Observed with LAMOST and GALAH: Considering the Oxygen Enhancement ". The 'inlist_project_MIST_sun' file evolves the model from pre-main sequence to the TAM…

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

Tiancheng Sun, Zhishuai Ge, Xunzhou Chen, Shaolan Bi, Tanda Li , et al. · 2023

MESA (r12115) inlist files used in the preparation of the paper "Age of FGK Dwarfs Observed with LAMOST and GALAH: Considering the Oxygen Enhancement ". The 'inlist_project_MIST_sun' file evolves the model from pre-main sequence to the TAM…

Measuring mass transfer of AM CVn binaries with a space-based gravitational wave detector Open

Zijian Wang, Zhoujian Cao, Xianfei Zhang · 2023

The formation mechanism of AM CVn binary has not been well understood yet. Accurate measurements of the mass transfer rate can help to determine the formation mechanism. But unfortunately such observation by electromagnetic means is quite …

The role of radial migration on tracing lithium evolution in the Galactic disk Open

Haopeng Zhang, Yuqin Chen, Gang Zhao, Shaolan Bi, Xianfei Zhang , et al. · 2023

With the calculated guiding center radius $R_{guiding}$ and birth radius $R_{birth}$, we investigate the role of radial migration on the description of lithium evolution in the Galactic disk based on the upper envelope of the A(Li) vs. [Fe…

Effect of Different Morphologies Induced By in Situ Semi-Conversion Strategy on Mof-Derived Microwave Absorbers Open

Zhichao Chen, Jintang Zhou, Xinyue Fu, Han Jiang, Junru Yao , et al. · 2023

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