20 citations · 32 across the 9 of their papers we have counts for
9 papers
Discovery and Characterization of White Dwarf-FGK Main-Sequence Binaries within the Optical Main-Sequence Locus
Mingkuan Yang, Hailong Yuan, Xiaozhen Yang +12
White dwarf main-sequence (WDMS) binaries provide important laboratories for studying binary evolution and the formation of low-mass white dwarfs. In this work, we identify 654 rel…
Revisiting Ca II Activity Indices in FGK Stars: Systematic Biases in Infrared Triplet Measurements
Xiaozhen Yang, Xiaoting Fu, Mingjie Jian +10
Synthetic-template subtraction is widely used to measure chromospheric activity in large spectroscopic surveys. However, many solar-like FGK stars show systematically negative Ca I…
Searching for Magnetic White Dwarfs in LAMOST DR10
Si-Cheng Yu, Juan-Juan Ren, Vitaly V. Neustroev +7
Magnetic white dwarfs (MWDs) are key to understanding the origin and evolution of magnetic fields in compact stars. While large spectroscopic surveys such as SDSS have greatly expa…
The survey of DA double white dwarf candidates based on DESI EDR
Ziyue Jiang, Hailong Yuan, Zhongrui Bai +9
Mergers of double white dwarfs are considered significant potential progenitors of type Ia supernovae. Although there is no direct observational evidence to definitively determine…
LAMOST J171013+532646: a detached short-period non-eclipsing hot subdwarf + white dwarf binary
Mingkuan Yang, Hailong Yuan, Zhongrui Bai +9
We present an analysis of LAMOST J171013.211+532646.04 (hereafter J1710), a binary system comprising a hot subdwarf B star (sdB) and a white dwarf (WD) companion. Multi-epoch spect…
Near-Infrared Ca II Triplet As An Stellar Activity Indicator: Library and Comparative Study
Xin Huang, Yu-JI He, ZhongRui Bai +11
We have established and released a new stellar index library of the Ca II Triplet, which serves as an indicator for characterizing the chromospheric activity of stars. The library…
Orbital parameters for an ELM white dwarf with a white dwarf companion: LAMOST J033847.06+413424.2
Hailong Yuan, Zhenwei Li, Zhongrui Bai +14
Double white dwarf systems are of great astrophysical importance in the field of gravitational wave and Type Ia supernova. While the binary fraction of CO core white dwarf is about…
Discovery of one neutron star candidate from radial velocity monitoring
Hailong Yuan, Song Wang, Zhongrui Bai +8
We report the discovery of one possible neutron star binary ( 0.8666 day) by using the LAMOST low-resolution spectroscopic data. The visible companion is a late A-ty…
ELM of ELM-WD: An extremely low mass hot star discovered in LAMOST survey
Hailong Yuan, Zhenwei Li, Zhongrui Bai +7
The Extremely Low Mass White Dwarfs (ELM WDs) and pre-ELM WDs are helium core white dwarfs with mass . Evolution simulations show that a lower mass limit for EL…