activity
20222026
most citedCandidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys

19 citations · 52 across the 33 of their papers we have counts for

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Showing astro-ph.GAShow all

13 papers · 1 filter

astro-ph.GA2026

GSED: The Galactic Stellar Extinction Database

Baisong Zhang, Bingqiu Chen, Dongwei Fan +9

Reliable extinction correction is essential for nearly all astrophysical studies within the Galaxy. We present the Galactic Stellar Extinction Database (GSED, https://nadc.china-vo…

astro-ph.GA2025

A North-South Metallicity Asymmetry in the Outer Galactic disk -- Evidence for the Pericentric Passage of the Sagittarius Dwarf Galaxy

Chun Wang, Yang Huang, Timothy C. Beers +4

We present maps of the mean metallicity distributions on the Galactocentric -- plane at different azimuthal angles using red clump stars selected from the LAMOST and APOGEE s…

astro-ph.GA2025

Additional Evidence for the Existence of a Primordial Disk System

Shuai Xu, Haibo Yuan, Bowen Huang +7

The origin of very metal-poor (VMP; [Fe/H] ) stars on planar orbits has been the subject of great attention since their first discovery. However, prior to the release of…

astro-ph.GA2025

The Vertical Metallicity Gradient of the Galactic Disk for Mono-Age Stellar Populations in LAMOST

Gaohuan Long, Haibo Yuan, Shuai Xu +3

The vertical metallicity gradient of the Galactic disk offers valuable insights into the disk's formation and chemical evolution over time. We utilized the LAMOST-LRS young stellar…

astro-ph.GA2025

Identification of Star Clusters in M31 from PAndAS Images Based on Deep Learning

Baisong Zhang, Bingqiu Chen, Haibo Yuan +5

The identification of star clusters holds significant importance in studying galaxy formation and evolution history. However, the task of swiftly and accurately identifying star cl…

astro-ph.GA2025

The S-PLUS Ultra-Short Survey: Photometric Re-calibration with the BEst STar Database

Xiaolu Li, Kai Xiao, Yang Huang +15

We present an independent validation and comprehensive re-calibration of S-PLUS Ultra-Short Survey (USS) DR1 12-band photometry using about 30,000--70,000 standard stars from the B…

astro-ph.GA2024

The LAMOST Spectroscopic Survey of Supergiants in M31 and M33

Hao Wu, Yang Huang, Huawei Zhang +3

We present systematic identifications of supergiants of M31/M33 based on massive LAMOST spectroscopic survey. Radial velocities of nearly 5000 photometrically selected M31/M33 supe…

astro-ph.GA2024

Reply to Comment on "A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp"

Yang Huang, Qikang Feng, Tigran Khachaturyants +7

In this reply, we present a comprehensive analysis addressing the concerns raised by Dehnen et al. (2024) regarding our recent measurement of the disk warp precession using the `mo…

astro-ph.GA2024

An Empirical Extinction Curve Revealed by Gaia XP Spectra and LAMOST

Ruoyi Zhang, Haibo Yuan, Bowen Huang +4

We present a direct measurement of extinction curves using corrected XP spectra of the common sources in DR3 and LAMOST DR7. Our analysis of approximately 370 thousan…

astro-ph.GA2024★ 16 cited

A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp

Yang Huang, Qikang Feng, Tigran Khachaturyants +7

The shape of the dark matter (DM) halo is key to understanding the hierarchical formation of the Galaxy. Despite extensive efforts in recent decades, however, its shape remains a m…

astro-ph.GA2024

Searching for Hyper-compact star clusters in the Milky Way using LAMOST and Gaia

Hao Wu, Haibo Yuan, Yilun Wang +2

During the early merger of the Milky Way, intermediate-mass black holes in merged dwarf galaxies may have been ejected from the center of their host galaxies due to gravitational w…

astro-ph.GA2023

Criss Cross Nebula: Case study of shock regions with resolved microstructures at scales of 1000 AU

Tao Jing, Cheng Li, Renbin Yan +7

Using integral field spectroscopy from MaNGA, we study the resolved microstructures in a shocked region in Criss Cross Nebula (CCN), with an unprecedentedly high resolution of $\le…

astro-ph.GA2023★ 19 cited

Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys

Jihye Hong, Timothy C. Beers, Young Sun Lee +15

Photometric stellar surveys now cover a large fraction of the sky, probe to fainter magnitudes than large-scale spectroscopic surveys, and are relatively free from the target-selec…