activity
20132025
most citedSelf-consistent Stellar Radial Velocities from LAMOST Medium-Resolution Survey (MRS) DR7

105 citations · 1.1k across the 42 of their papers we have counts for

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Showing astro-ph.EPShow all

5 papers · 1 filter

astro-ph.EP2025★ 1 cited

Planets Across Space and Time (PAST). VIII : Kinematic Characterization and Identification of Radial Velocity Variables for the LAMOST-Gaia-TESS Stars

Di Wu, Di-Chang Chen, Ji-Wei Xie +6

The Transiting Exoplanet Survey Satellite (TESS) has discovered over 6700 nearby exoplanets candidates using the transit method through its all-sky survey. Characterizing the kinem…

astro-ph.EP2023

Planets Across Space and Time (PAST) IV: The Occurrence and Architecture of Kepler Planetary Systems as a Function of Kinematic Age Revealed by the LAMOST-Gaia-Kepler Sample

Jia-Yi Yang, Di-Chang Chen, Ji-Wei Xie +7

One of the fundamental questions in astronomy is how planetary systems form and evolve. Measuring the planetary occurrence and architecture as a function of time directly addresses…

astro-ph.EP2022★ 33 cited

Planets Across Space and Time (PAST). III. Morphology of the Planetary Radius Valley as a Function of Stellar Age and Metallicity in the Galactic Context Revealed by the LAMOST-Gaia-Kepler Sample

Di-Chang Chen, Ji Wei Xie, Ji-Lin. Zhou +7

The radius valley, a dip in the radius distribution of exoplanets at ~1.9 Earth radii separates compact rocky Super-Earths and Sub-Neptunes with lower density. Various hypotheses h…

astro-ph.EP2022★ 6 cited

Detecting and Monitoring Tidal Dissipation of Hot Jupiters in the Era of SiTian

Fan Yang, Wei Wang, Xing Wei +13

Transit Timing Variation (TTV) of hot Jupiters provides direct observational evidence of planet tidal dissipation. Detecting tidal dissipation through TTV needs high precision tran…

astro-ph.EP2021

Planets Across Space and Time (PAST). II: Catalog and Analyses of the LAMOST-Gaia-Kepler Stellar Kinematic Properties

Di-Chang Chen, Jia-Yi Yang, Ji-Wei Xie +10

The Kepler telescope has discovered over 4,000 planets (candidates) by searching ? 200,000 stars over a wide range of distance (order of kpc) in our Galaxy. Characterizing the kine…