activity
20202026
most citedPossible evidence of hydrogen emission in the first-overtone and multi-mode RR Lyrae variables

6 citations · 7 across the 13 of their papers we have counts for

collaborators

13 papers

astro-ph.GA2026

Correlation between the two-armed spiral in the -- plane and moving groups

Yan Xu, Chao Liu, Chengdong Li +5

We use a cross-matched sample of 3.7 million stars from Gaia DR3 and LAMOST DR7 to investigate the velocity substructures in the Milky Way disk. The median radial velocity as…

astro-ph.SR2026

A Search for High Frequency Oscillations in TESS Cycle 7

Guanda Huang, Xiaodian Chen, Shu Wang +2

High-quality, short-cadence photometry from TESS enables the detection of rapid oscillators with unprecedented sensitivity. In this work, we conduct a homogeneous search for high-f…

astro-ph.GA2026

The extinction distances for over a thousand planetary nebulae with Gaia measurements

Juan Deng, Shu Wang, Biwei Jiang +1

Although Gaia has identified the central stars of planetary nebulae (CSPNe) for about 70% of known Galactic planetary nebulae (PNe), reliable distance estimates remain incomplete,…

astro-ph.SR2025

Classification for 969 double-mode RR Lyrae stars from Zwicky Transient Facility

Jianxing Zhang, Xiaodian Chen, Shu Wang +2

RR Lyrae (RRL) variable stars are cornerstone distance indicators. In particular, double-mode RR Lyrae (RRd) stars enable period--luminosity relations (PLRs) that are less sensitiv…

astro-ph.GA2025

A Detailed Analysis of the Milky Way Warp Based on Classical Cepheids

Xiaoyue Zhou, Xiaodian Chen, Licai Deng +3

Classical Cepheids (CCs) are important probes for the large-scale warp structure of the Milky Way. Using Gaia DR3 CCs, we establish an optimal time-dependent warp model, where the…

astro-ph.SR2025

A search of periodic variable stars in the LMC by JWST photometry

Jiyu Wang, Xiaodian Chen, Jianxing Zhang +3

Based on high-resolution near-infrared photometric data from the James Webb Space Telescope (JWST) targeting the Large Magellanic Cloud (LMC), this study attempts to evaluate the f…

astro-ph.GA2025

The Tip of Red Giant Branch Distances to Nearby Dwarf Galaxies WLM and Sextans A with JWST

Ziming Yan, Shu Wang, Xiaodian Chen +1

Distance measurements to extragalactic systems that are both accurate and precise are cornerstones of modern astrophysics, underpinning the calibration of standard candles and the…

astro-ph.SR2025★ 1 cited

Period--Luminosity Relations for Double-mode Sct Stars

Qi Jia, Xiaodian Chen, Shu Wang +3

Previous studies of the Period--Luminosity relations (PLRs) of Delta Scuti ( Sct) stars have focused on those with a single pulsation mode. However, for Sct stars with many…

astro-ph.SR2024

The rotation properties of Sct and Dor stars

Jiyu Wang, Xiaodian Chen, Licai Deng +2

Based on the LAMOST spectroscopy and TESS time-series photometry, we have obtained a main-sequence star sample of Scuti and Doradus stars. The sample includes 1534 Sct…

astro-ph.SR2024

Multi-mode delta Sct stars from the Zwicky Transient Facility Survey

Qi Jia, Xiaodian Chen, Shu Wang +3

We obtain the largest catalog of multi-mode Sct stars in the northern sky to date using the Zwicky Transient Facility (ZTF) Data Release 20 (DR20). The catalog includes 2254 ob…

astro-ph.GA2024

Tracing the Galactic disk from the kinematics of Gaia Cepheids

Xiaoyue Zhou, Xiaodian Chen, Licai Deng +1

Classical Cepheids (CCs) are excellent tracers for understanding the structure of the Milky Way disk. The latest Gaia Data Release 3 provides a large number of line-of-sight veloci…

astro-ph.GA2023

Exploring asymmetric substructures of the outer disk based on the conjugate angle of the radial action

Y. Xu, C. Liu, Z. Li +5

We use the conjugate angle of radial action (), the best representation of the orbital phase, to explore the "mid-plane, north branch, south branch" and "Monoceros area" disk…

astro-ph.SR2020★ 6 cited

Possible evidence of hydrogen emission in the first-overtone and multi-mode RR Lyrae variables

Xiao-Wei Duan, Xiao-Dian Chen, Li-Cai Deng +4

The nature of shock waves in non-fundamental mode RR Lyrae stars remains a mystery because of limited spectroscopic observations. We apply a pattern recognition algorithm on spectr…