activity
20242026
most citedUpdated Mutual Inclination Measurement for 14 Her b and c

3 citations · 4 across the 13 of their papers we have counts for

collaborators

15 papers

astro-ph.SR2026

An Intermediate-orbit Brown Dwarf Confirmed with Astrometry+Radial Velocity Joint Analysis, and the Eccentricity Distribution of Brown Dwarfs Across Different Locations

Lei Ren, Tianjun Gan, Yifan Xuan +5

Intermediate-orbit ( AU) brown dwarfs with absolute mass measurements are essential for understanding the evolution of substellar objects. Although such systems remain rare…

astro-ph.EP2026

Transiting Planetary Systems with Distant Giant Companions Remain Moderately Coplanar

Guang-Yao Xiao, Huan-Yu Teng, Xiumin Huang +4

The mutual inclination between inner planets and distant giant companions provides an important probe of planetary system formation and dynamical evolution, yet direct measurements…

astro-ph.SR2026

Unveiling the nature of G6096: a likely hierarchical triple system

Yinghao Xu, Xinlin Zhao, Song Wang +10

G6096 (Gaia DR3 609651611028044544) was recently reported as a wide ( days) and eccentric () binary possibly hosting a massive white dwarf or neutron star. In…

astro-ph.EP2026

The 3D Architecture of a pair of 6:1 Resonant Brown Dwarfs around the Naked-eye star Ophiuchi

Tianshenhong Sang, Guang-Yao Xiao, Ying-Yi Cao +8

We present a revisiting study of the brown dwarf pair orbiting the naked-eye () K-giant ~Ophiuchi, located only 44\,pc from our Solar system. By jointly analysing archiva…

astro-ph.EP2026

Cold giant discoveries from a joint radial-velocity and astrometry framework

Pablo A. Peña, James S. Jenkins, Fabo Feng +11

The population of long-period giant planets shapes planetary system architectures and formation pathways, but these cold Jupiters remain relatively unexplored. Radial velocity (RV)…

astro-ph.EP2026

A universal brown dwarf desert formed between planets and stars

Kaiming Cui, Guang-Yao Xiao, Fabo Feng +10

Giant planets and brown dwarfs play a crucial role in star and planet formation, as they are situated at the boundary between planets and stars with uncertain formation mechanisms.…

astro-ph.EP2026

HD 164604 c: a second giant planet on a 15-yr orbit and the constraint of the planet-planet mutual inclination

Guang-Yao Xiao, Fabo Feng, R. Paul Butler +4

We report the discovery of a new massive giant planet, HD 164604 c ( au, and or $7.6_{-1.0}…

astro-ph.EP2026

RVTESS I: Modeling Asteroseismic Signals with Simultaneous Photometry and RVs

Jiaxin Tang, Sharon X. Wang, Yaguang Li +22

Detecting small planets via the radial velocity method remains challenged by signals induced by stellar variability, versus the effects of the planet(s). Here, we explore using Gau…

astro-ph.EP2026

Detection of four cold Jupiters through combined analyses of radial velocity and astrometry data

Yiyun Wu, Guang-Yao Xiao, R. Paul Butler +19

Cold Jupiters play a crucial role in planet formation and dynamical evolution. Since their initial discovery around 47 UMa, they have attracted significant interest, yet their form…

astro-ph.SR2025

Detection of dark companions via the combination of eclipse timing variation, Hipparcos and/or Gaia astrometry: the cases of V Puppis and CY Ari

Guang-Yao Xiao, Fabo Feng, Song Wang +3

The third body is expected to shape the formation and evolution of close binary systems. In this work, we develop a method to detect and characterize the tertiary companion around…

astro-ph.EP2025★ 3 cited

Updated Mutual Inclination Measurement for 14 Her b and c

Guang-Yao Xiao, Fabo Feng

The mutual inclination between orbits within multi-planetary systems is difficult to measure directly. Through a joint analysis of RVs, Hipparcos-Gaia absolute astrometry and r…

astro-ph.GA2025★ 1 cited

A Cartesian catalog of 30 million Gaia sources based on second-order and Monte Carlo error propagation

Luyao Zhang, Fabo Feng, Yicheng Rui +2

Accurate measurements of stellar positions and velocities are crucial for studying galactic and stellar dynamics. We aim to create a Cartesian catalog from Gaia DR3 to serve as a h…

astro-ph.EP2024

Lessons learned from the detection of wide companions by radial velocity and astrometry

Fabo Feng, Guang-Yao Xiao, Hugh R. A. Jones +3

The detection and constraint of the orbits of long-period giant planets is essential for enabling their further study through direct imaging. Recently, it has been highlighted that…

astro-ph.EP2024

HD 222237 b: a long period super-Jupiter around a nearby star revealed by radial-velocity and Hipparcos-Gaia astrometry

Guang-Yao Xiao, Fabo Feng, Stephen A. Shectman +16

Giant planets on long period orbits around the nearest stars are among the easiest to directly image. Unfortunately these planets are difficult to fully constrain by indirect metho…

astro-ph.IM2024

Tianyu: search for the second solar system and explore the dynamic universe

Fabo Feng, Yicheng Rui, Zhimao Du +32

Giant planets like Jupiter and Saturn, play important roles in the formation and habitability of Earth-like planets. The detection of solar system analogs that have multiple cold g…