activity
20092023
most citedThe Inner Halo of M87: A First Direct View of the Red-Giant Population

125 citations · 567 across the 17 of their papers we have counts for

collaborators

17 papers

astro-ph.IM2023

SDSS-IV from 2014 to 2016: A Detailed Demographic Comparison over Three Years

Amy M. Jones, Rachael L. Beaton, Brian A. Cherinka +24

The Sloan Digital Sky Survey (SDSS) is one of the largest international astronomy organizations. We present demographic data based on surveys of its members from 2014, 2015 and 201…

astro-ph.GA2023

Exploring asymmetric substructures of the outer disk based on the conjugate angle of the radial action

Y. Xu, C. Liu, Z. Li +5

We use the conjugate angle of radial action (), the best representation of the orbital phase, to explore the "mid-plane, north branch, south branch" and "Monoceros area" disk…

astro-ph.SR2023

Age of FGK Dwarfs Observed with LAMOST and GALAH: Considering the Oxygen Enhancement

Tiancheng Sun, Zhishuai Ge, Xunzhou Chen +11

Varying oxygen abundance could impact the modeling-inferred ages. This work aims to estimate the ages of dwarfs considering observed oxygen abundance. To characterize 67,503 LAMOST…

astro-ph.SR2023

Discovery of two rotational modulation periods from a young hierarchical triple system

Yu-Tao Chen, Hai-Jun Tian, Min Fang +7

GW~Ori is a young hierarchical triple system located in Orionis, consisting of a binary (GW~Ori\,A and B), a tertiary star (GW~Ori\,C) and a rare circumtriple disk. Due to the…

astro-ph.GA2022★ 23 cited

Probing the Galactic halo with RR Lyrae stars III. The chemical and kinematic properties of the stellar halo

Gaochao Liu, Yang Huang, Sarah Ann Bird +3

Based on a large spectroscopic sample of 4,300 RR Lyrae stars with metallicity, systemic radial velocity and distance measurements, we present a detailed analysis of the che…

astro-ph.GA2022★ 42 cited

Milky Way Mass with K Giants and BHB Stars Using LAMOST, SDSS/SEGUE, and Gaia: 3D Spherical Jeans Equation and Tracer Mass Estimator

Sarah A. Bird, Xiang-Xiang Xue, Chao Liu +8

We measure the enclosed Milky Way mass profile to Galactocentric distances of and kpc using the smooth, diffuse stellar halo samples of Bird et al. The samples ar…