5 papers
Stellar initial mass function in the 100-pc solar neighbourhood
Yu-Ting Wang, Chao Liu, Jiadong Li
The stellar initial mass function (IMF) is among the most fundamental distributions in astrophysics, defined as the mass spectrum of stars produced in a single star-formation event…
Selecting Optimal Stellar Calibration Fields for the CSST Imaging Survey
Chenxiaoji Ling, Juanjuan Ren, Li Shao +8
The Chinese Space Station Survey Telescope (CSST) will perform a decade-long high-precision wide-field imaging survey that relies on rigorous on-orbit calibration. This necessitate…
Variations in the Milky Way's Stellar Mass Function at [Fe/H] < -1
Jiadong Li, Hans-Walter Rix, Yuan-Sen Ting +14
We present the first determination of the Galactic stellar mass function (MF) for low-mass stars (0.2-0.5 M_sun) at metallicities [Fe/H] < -1. A sample of ~53,000 stars was selecte…
The Initial mass function of field stars with mass 1 varies with metallicity
Dan Qiu, Chao Liu, Jennifer A. Johnson +2
We investigated a volume-limited sample of LAMOST main-sequence stars with masses from 0.25 to 1 and distances of 150-350 pc to explore how the stellar initial mass fun…
Millions of Main-Sequence Binary Stars from Gaia BP/RP Spectra
Jiadong Li, Hans-Walter Rix, Yuan-Sen Ting +6
We present the main-sequence binary (MSMS) Catalog derived from Gaia Data Release 3 BP/RP (XP) spectra. Leveraging the vast sample of low-resolution Gaia XP spectra, we develop a f…