553 citations · 1.1k across the 30 of their papers we have counts for
30 papers
The Nearest Neutron Star Candidate in a Binary Revealed by Optical Time-domain Surveys
Ling-Lin Zheng, Mouyuan Sun, Wei-Min Gu +19
The near-Earth (within pc) supernova explosions in the past several million years can cause the global deposition of radioactive elements (e.g., Fe) on Earth. The…
A White Dwarf-Main Sequence Binary Unveiled by Time-Domain Observations from LAMOST and TESS
Ling-Lin Zheng, Wei-Min Gu, Mouyuan Sun +16
We report a single-lined white dwarf-main sequence binary system, LAMOST J172900.17+652952.8, which is discovered by LAMOST's medium resolution time-domain surveys. The radial velo…
A dynamically discovered and characterized non-accreting neutron star -- M dwarf binary candidate
Tuan Yi, Wei-Min Gu, Zhi-Xiang Zhang +26
Optical time-domain surveys can unveil and characterize exciting but less-explored non-accreting and/or non-beaming neutron stars (NS) in binaries. Here we report the discovery of…
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…
Detecting shock waves in non-fundamental mode RR Lyrae using large sample of spectra in SDSS and LAMOST
Xiao-Wei Duan, Xiao-Dian Chen, Li-Cai Deng +4
Steps toward the nature inside RR Lyrae variables can not only improve our understanding of variable stars but also innovate the precision when we use them as tracers to map the st…
Revisiting KELT-19Ab, WASP-156b and WASP-121b in the TESS Era
Fan Yang, Ranga-Ram Chary, Ji-Feng Liu
We present a re-analysis of transit depths of KELT-19Ab, WASP-156b, and WASP-121b, including data from the Transiting Exoplanet Survey Satellite (TESS). The large 21$\arcsec$…
Two Portions of Sagittarius Stream in the LAMOST Complete Spectroscopic Survey of Pointing Area at Southern Galactic Cap
J. K. Zhao, X. H. Ye, H. Wu +6
We constructed a sample of 13,798 stars with , log , [Fe/H], radial velocity, proper motions and parallaxes from LAMOST DR5 and Gaia DR2 in the LAMOST Complete Spect…
On the radial velocity calibrations in the LAMOST Medium-Resolution Spectroscopic Survey of Nebulae
Juan-Juan Ren, Hong Wu, Chao-Jian Wu +12
Accurate radial velocity determinations of optical emission lines (i.e. [NII]6548,6584, H, and [SII]6717,6731) are very important for investigating the kinematics and dy…
A Mysterious Ring in Dark Space?
Wei Zhang, Fan Yang, Hong Wu +10
We report the discovery of a low-surface-brightness (27.42 mag arcsec^(-2) in g band) nebula, which has a ring-like shape in the Beijing-Arizona Sky Survey (BASS). Positive detecti…
Galaxy Optical Variability of Virgo Cluster: New Tracer for Environmental Influences on Galaxies
Fan Yang, Richard J. Long, Su-Su Shan +6
We investigate the relationship between the optical variability of galaxies and their distances from the centre of the Virgo Cluster using Palomar Transient Factory data. We define…
A Catalog of Short Period Spectroscopic and Eclipsing Binaries Identified from the LAMOST & PTF Surveys
Fan Yang, Richard J. Long, Su-Su Shan +7
Binaries play key roles in determining stellar parameters and exploring stellar evolution models. We build a catalog of 88 eclipsing binaries with spectroscopic information, taking…
LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan
Chao Liu, Jianning Fu, Jianrong Shi +38
Since September 2018, LAMOST starts a new 5-year medium-resolution spectroscopic survey (MRS) using bright/gray nights. We present the scientific goals of LAMOST-MRS and propose a…
Irregular changes in Hα emission line of V423 Aur observed by LAMOST Medium-Resolution Spectrographs
Chao-Jian Wu, Hong Wu, Chih-Hao Hsia +8
We obtained 7 spectra of the Be star V423 Aur on Dec. 5th, 2017 using the LAMOST Medium-Resolution Spectrograph with exposures from 600 to 1200 seconds. These spectra show the irre…
Searching for Black Hole Candidates by LAMOST and ASAS-SN
Ling-Lin Zheng, Wei-Min Gu, Tuan Yi +13
Most dynamically confirmed stellar-mass black holes and the candidates were originally selected from X-ray outbursts. In the present work, we search for black hole candidates in th…
Long rotation period main-sequence stars from Kepler SAP light curves
Kaiming Cui, Jifeng Liu, Shuhong Yang +7
Stellar rotation plays a key role in stellar activity. The rotation period could be detected through light curve variations caused by starspots. Kepler provides two types of light…
The galaxy luminosity function in the LAMOST Complete Spectroscopic Survey of Pointing Area at the Southern Galactic Cap
Pinsong Zhao, Hong Wu, C. K. Xu +13
We present optical luminosity functions (LFs) of galaxies in the , , and bands, calculated using data in sky area of LAMOST Complete…
Machine learning Applied to Star-Galaxy-QSO Classification and Stellar Effective Temperature Regression
Yu Bai, JiFeng Liu, Song Wang +1
In modern astrophysics, the machine learning has increasingly gained more popularity with its incredibly powerful ability to make predictions or calculated suggestions for large am…
An H Imaging Survey of the Low-surface-brightness Galaxies Selected from the Fall Sky Region of the 40 ALFALFA \ion{H}{1} Survey
Fengjie Lei, Hong Wu, Wei Du +11
We present the observed H flux and derived star formation rates (SFRs) for a fall sample of lowsurfacebrightness galaxies (LSBGs). The sample is selected from the fall sky…
The LAMOST Complete Spectroscopic Survey of Pointing Area (LaCoSSPAr) in the Southern Galactic Cap I. The Spectroscopic Redshift Catalog
Ming Yang, Hong Wu, Fan Yang +29
We present a spectroscopic redshift catalog from the LAMOST Complete Spectroscopic Survey of Pointing Area (LaCoSSPAr) in the Southern Galactic Cap (SGC), which is designed to obse…
Molecular Gas and Star-Formation In Low Surface Brightness Galaxies
Tian-Wen Cao, Hong Wu, Wei Du +12
We have obtained CO(J=2-1) spectra of nine face-on low surface brightness galaxies(LSBGs) using the JCMT 15-meter telescope and observed Ha images using the 2.16-meter telescope of…
Spectral Identification of the u-band Variable Sources in Two LAMOST fields
TianWen Cao, Ming Yang, Hong Wu +17
We selected 82 u-band variable objects based on the u-band photometry data from SCUSS and SDSS, in the field of LAMOST Complete Spectroscopic Survey of Pointing Area at Southern Ga…
FGK 22 m Excess Stars in LAMOST DR2 Stellar Catalog
Chao-Jian Wu, Hong Wu, Kang Liu +8
Since the release of LAMOST (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope) catalog, we have the opportunity to use the LAMOST DR2 stellar catalog and \emph{WISE Al…
Member candidates of the star clusters from LAMOST DR2 data
Bo Zhang, Xiao-Yan Chen, Chao Liu +10
In this work, we provide 2189 photometric- and kinematic-selected member candidates of 24 star clusters from the LAMOST DR2 catalog. We perform two-step membership identification:…
The K giant stars from the LAMOST survey data I: identification, metallicity, and distance
Chao Liu, Li-Cai Deng, Jeffrey L. Carlin +10
We present a support vector machine classifier to identify the K giant stars from the LAMOST survey directly using their spectral line features. The completeness of the identificat…