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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…
Host--Non-host Differences in Stellar Chemistry, Activity, and Birth Radius: Hints of Distinct Formation Environments for Earth-like Planets and Sub-Neptunes
Xunzhou Chen, Tiancheng Sun, Yuxi +3
Host-star properties provide important clues to planet formation and evolution, yet it remains unclear whether the observed differences between planet-hosting stars and stars witho…
Insights into the Exoplanet Radius Valley from Host-Star Ages, Activity, Chemistry, and Birth Radius
Xunzhou Chen, Tiancheng Sun, Yuxi +3
The radius valley, a bimodal feature in the size distribution of close-in small exoplanets, is widely interpreted as a signature of atmospheric loss and therefore provides a key co…
Insights into Planet Formation from the Ages, Masses, and Elemental Abundances of Host Stars
Xunzhou Chen, Tiancheng Sun, Lifei Ye
How planetary systems form and evolve is a key question in astronomy. Revealing how host star properties, such as elemental abundances, age, and mass, differ from those of non-host…
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…