60 citations · 233 across the 15 of their papers we have counts for
9 papers · 1 filter
Constraining the Delay Time Distribution of the r- and s-Process from Stellar Ages at Solar Metallicity
Meng Zhang, Hans-Walter Rix
We present a new approach to constraining the delay time distribution (DTD) governing r- and s-process element production. Rather than using metallicity as a proxy for time, we wor…
Testing Chemical Tagging with LAMOST: Intrinsic Abundance Dispersion of Subgiant Stars in the Galactic Disk
Wu Yaqian, Xiang Maosheng, Zhao Gang +4
The scatter in elemental abundances among stars of similar age and metallicity reflects chemical inhomogeneity in their birth environments, making abundance scatter a key observabl…
SPURS: Evidence for Clumpy Neutral Envelopes and Ionized IGM Surrounding Little Red Dots in Abell 2744 from Ultra-Deep Rest-UV Spectroscopy
Mengtao Tang, Daniel P. Stark, Charlotte A. Mason +14
Rest-frame ultraviolet (UV) spectra of Little Red Dots (LRDs) often show Ly emission. Along with broad Balmer emission, LRDs are expected to produce broad Ly emission. Howeve…
PhDLspec: physical-prior embedded deep learning method for spectroscopic determination of stellar labels in high-dimensional parameter space
Tianmin Wu, Maosheng Xiang, Jianrong Shi +4
Unlocking the full physical information encoded in low-resolution spectra poses a significant challenge for astronomical survey analysis. Such a task demands modeling spectra and o…
Determining Stellar Elemental Abundances from DESI Spectra with the Data-Driven Payne
Meng Zhang, Maosheng Xiang, Yuan-Sen Ting +8
Stellar abundances for a large number of stars are key information for the study of Galactic formation history. Large spectroscopic surveys such as DESI and LAMOST take median-to-l…
Most "young" -rich stars have high masses but are actually old
Meng Zhang, Mao-Sheng Xiang, Hua-Wei Zhang +8
Recent observations have revealed a population of -element abundances enhanced giant stars with unexpected high masses (1 ) from asteroseismic analysis and spe…
Mapping the Galactic disk with the LAMOST and Red clump sample: V: On the origin of the "young" [/Fe]-enhanced stars
Weixiang Sun, Yang Huang, Haifeng Wang +8
Using a sample of nearly 140,000 primary red clump stars selected from the LAMOST and surveys, we have identified a large sample of "young" [/Fe]-enhanced stars with stel…
A catalogue of H emission-line point sources in the vicinity fields of M31 and M33 from the LAMOST survey
M. Zhang, B. -Q. Chen, Z. -Y. Huo +6
We present a catalogue of 3,305 H emission-line point sources observed with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) in the vicinity fields of M31…
Stellar mass distribution and star formation history of the Galactic disk revealed by mono-age stellar populations from LAMOST
Maosheng Xiang, Jianrong Shi, Xiaowei Liu +8
We present a detailed determination and analysis of 3D stellar mass distribution of the Galactic disk for mono-age populations using a sample of 0.93 million main-sequence turn-off…