22 citations · 70 across the 23 of their papers we have counts for
23 papers
High-Priority Compact-Object Candidates in Young Clusters from the \textit{Gaia} DR3 Non-Single-Star Catalog
Dejian Liu, Kangteng Chang, Yao Huang +7
The search for massive compact objects such as black holes (BHs) or neutron stars (NSs) in star clusters is longstanding challenge in astrophysics, yet no definitive identification…
Star Formation in the H II Region Sh 2-205: 3D Morphology and Kinematics from Young Stars and Molecular Gas
Yiwei Dong, Chaojie Hao, Ye Xu +5
Using Gaia astrometry of young stars combined with CO observations, we present the first systematic three-dimensional (3D) analysis of the structure, kinematics, and evolutionary h…
Mapping the Milky Way with Masers
Ye Xu, Kazi Rygl, Huib Jan van Langevelde +10
SKA-VLBI is poised to revolutionize our understanding of the Galactic structure through its unprecedented astrometric precision and sensitivity. As a next-generation facility, it w…
East Asian VLBI Network astrometry toward the star-forming region G040.96+02.48 in the Extreme Outer Galaxy
Xianjin Shen, Zehao Lin, Nobuyuki Sakai +18
Accurate astrometric measurements for star-forming regions located on the far side of the Milky Way remain scarce. In this work, we present the astrometric results for a 22\,GHz wa…
Detection and Characterization of Quasi-Periodic Oscillations in Seyfert Galaxy NGC 4151
Yan Yongkang, Zhang Peng, Lu Zhou +6
This study aims to detect and characterize quasi-periodic oscillations (QPOs) signals in X-ray observations of NGC 4151. We employed the Weighted Wavelet Z-transform (WWZ) and Lomb…
Outflowing Gas in the Planetary Nebula K 3-54
Xiuhui Chen, Dejian Liu, Ping Yan +3
As planetary nebulae (PNe) evolve, they develop slow and strong dust-driven stellar winds, making the joint study of dust and gas essential for understanding their nature. As a pil…
Kinematics of Young Stellar Objects Under Various Stellar Feedback
Longhui Yang, Dejian Liu, Chaojie Hao +6
Based on the Gaia Data Release 3 and APOGEE datasets, we investigate the kinematic differences between young stellar objects (YSOs) and their parent clouds in five nearby star-form…
A New Statistical Analysis of the Morphology of Spiral Galaxies
Junye Wei, Ye Xu, Zehao Lin +4
Morphology is the starting point for understanding galaxies. Elmegreen et al. classified spiral galaxies into flocculent, multiple-arm, and grand-design galaxies based on the regul…
3D Morphology and Motions of the Canis Major Region from Gaia DR3
Yiwei Dong, Ye Xu, Chaojie Hao +4
The Canis Major (CMa) region is known for its prominent arc-shaped morphology, visible at multiple wavelengths. This study integrates molecular gas data with high-precision astrome…
Search for Classical Cepheids in Galactic Open Clusters and Calibration of the Period Wesenheit Metallicity Relation in the Gaia Bands
Huajian Wang, Ye Xu, Zehao Lin +3
It is beneficial to calibrate the period Wesenheit metallicity relation (PWZR) of Delta Cephei stars (DCEPs), i.e., classical Cepheids, using accurate parallaxes of associated open…
VLBI with SKA: Possible Arrays and Astrometric Science
Yingjie Li, Ye Xu, Jingjing Li +4
The next generation of very long baseline interferometry (VLBI) is stepping into the era of microarcsecond (as) astronomy, and pushing astronomy, especially astrometry, to new h…
Molecular Bubble and Outflow in S Mon Revealed by Multiband Datasets
Dejian Liu, Ye Xu, YingJie Li +8
We identify a molecular bubble, and study the star formation and its feedback in the S Mon region, using multiple molecular lines, young stellar objects (YSOs), and infrared data.…
Maser Investigation toward Off-Plane Stars (MIOPS): detection of SiO masers in the Galactic thick disk and halo
Wenjin Yang, Yuanwei Wu, Yan Gong +7
Studying stars that are located off the Galactic plane is important for understanding the formation history of the Milky Way. We searched for SiO masers toward off-plane O-rich asy…
Kinematics of the Local Spiral Structure Revealed by Young Stars in \emph{Gaia}~DR3
Dejian Liu, Ye Xu, Chaojie Hao +4
Using young open clusters and O--B2-type stars in~\emph{Gaia}~DR3, we investigate the kinematics of the local spiral structure. In general, the young sources in the outer spiral ar…
Distributions and Physical Properties of Molecular Clouds in the Third Galactic Quadrant: = [219.75, 229.75] and = [-5.25, 5.25]
Yiwei Dong, Yan Sun, Ye Xu +11
We present the results of an unbiased CO/CO/CO ( = 1-0) survey in a portion of the third Galactic quadrant (TGQ): = [219.75, 229.75] and = […
Calibrating the Cepheid Period--Wesenheit Relation in the Gaia Bands using Galactic Open Cluster Cepheids
Zehao Lin, Ye Xu, Chaojie Hao +3
Establishing the period--Wesenheit relation requires independent and accurate distance measurements of classical Cepheids (DCEPs). The precise distance provided by an associated op…
The Effect of Light Deflection by Solar System Objects on High-Precision SKA Astrometry
Yingjie Li, Ye Xu, Shaibo Bian +4
We have computed the deflection angles caused by 195 objects in the solar system, including 177 satellites and eight asteroids. Twenty-one satellites and six asteroids can bend lig…
Neutral Stellar Winds Toward the High-Mass Star-Forming Region G176.51+00.20
Li Yingjie, Xu Ye, Xu Jin-Long +7
We observed the high-mass star-forming region G176.51+00.20 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) with the 19-beam tracking observational mode. Thi…
HI Narrow-Line Self-Absorptions Toward the High-Mass Star-Forming Region G176.51+00.20
Li Yingjie, Xu Ye, Xu Jin-Long +7
Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) 19-beam tracking observational mode, high sensitivity and high-velocity resolution HI spectral lines have bee…
A baseline correction algorithm for FAST
De-Jian Liu, Ye Xu, Ying-Jie Li +3
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) is the most sensitive ground-based, single-dish radio telescope on Earth. However, the original HI spectra produced…
Local Spiral Structure Traced by Red Clump Stars
Zehao Lin, Ye Xu, Ligang Hou +5
Using the cross-matched data of Gaia EDR3 and the 2MASS Point Source Catalog, a sample of RC stars with parallax accuracies better than 20% is identified and used to reveal the nea…
Light Deflection under the Gravitational Field of Jupiter -- Testing General Relativity
Yingjie Li, Ye Xu, JingJing Li +6
We measured the relative positions between two pairs of compact extragalactic sources (CESs), J1925-2219 \& J1923-2104 (C1--C2) and J1925-2219 \& J1928-2035 (C1--C3) on 2020 Octobe…
High-sensitivity millimeter imaging of molecular outflows in nine nearby high-mass star-forming regions
De-Jian Liu, Ye Xu, Ying-Jie Li +6
We present a study of molecular outflows using six molecular lines (including 12CO/13CO/C18O/HCO+(J = 1-0) and SiO/CS(J = 2-1)) toward nine nearby high-mass star-forming regions wi…