170 citations · 484 across the 24 of their papers we have counts for
24 papers
The size-velocity dispersion relationship of Galactic HII regions
Lin Ma, Yunning Zhao, Wei Zhang +11
The size-velocity dispersion () relation, while well established for giant HII regions, remains uncertain for their smaller counterparts (physical radii R < 20 pc). Thanks to th…
Spatially-resolved Galactic HII regions observed by LAMOST medium-Resolution Spectroscopic Survey of Nebulae (LAMOST MRS-N)
Wei Zhang, Yunning Zhao, Lin Ma +9
We present spatially-resolved spectroscopic observations of 10 isolated Galactic HII regions using data from the LAMOST Medium-Resolution Spectroscopic Survey of Nebulae (LAMOST MR…
Diffuse Ionized Gas in the Anti-center of the Milky Way
Shiming Wen, Wei Zhang, Lin Ma +10
Using data from the LAMOST Medium-Resolution Spectroscopic Survey of Nebulae, we create a sample of 17,821 diffuse ionized gas (DIG) spectra in the anti-center region of the Milky…
The metallicity dilution in local massive early-type galaxies
Wu Yu-zhong, Zhang Wei
We derive a sample of 114 Baldwin-Phillips-Terlevich diagram - star formation (BPT-SF) and Wide-field infrared Survey Exploer - low star formation rate (WISE-LSFR) early-type galax…
LAMOST MRS-N Observations of the W80 Region
Yao Li, Chao-Jian Wu, Yong-Qiang Yao +12
The spectral observations and analysis for the W80 Region are presented by using the data of Medium-Resolution Spectroscopic Survey of Nebulae (MRS-N) with the Large Sky Area Multi…
Measuring the Metallicity of Early-type Galaxies. I. Composite Region
Wu Yuzhong
We present the data of 9,739 early-type galaxies (ETGs), cross-matching the Galaxy Zoo 1 with our sample selected from the catalog of the Sloan Digital Sky Survey Data Release 7 of…
Estimating The Metallicity of Star-forming Early-type Galaxies
Wu Yuzhong, Zhang Wei
We derive data of 4615 star-forming early-type galaxies (ETGs), which come from cross-match of the and the catalogue of the MPA-JHU emission-line measurements for th…
The Metallicity measurement of Early-type Galaxies
Wu Yuzhong
We use data for 6048 early-type galaxies (ETGs) from Galaxy Zoo 1 that have been cross-matched with the catalog of the MPA-JHU emission-line measurements for the Sloan Digital Sky…
The Data Processing of the LAMOST Medium-Resolution Spectral Survey of Galactic Nebulae (LAMOST MRS-N Pipeline)
Chao-Jian Wu, Hong Wu, Wei Zhang +8
The Large sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) medium-resolution spectral survey of Galactic Nebulae (MRS-N) has conducted for three years since Sep. 2018 a…
LAMOST Medium-Resolution Spectral Survey of Galactic Nebulae (LAMOST-MRS-N): Subtraction of Geocoronal Halpha Emission
Wei Zhang, Hong Wu, Chaojian Wu +10
We introduce a method of subtracting geocoronal Halpha emissions from the spectra of LAMOST medium-resolution spectral survey of Galactic nebulae (LAMOST-MRS-N). The flux ratios of…
A New Transition Wolf-Rayet WN/C Star in the Milky Way
Wei Zhang, Helge Todt, Hong Wu +7
We report the discovery of a new transition type Wolf-Rayet (WR) WN/C star in the Galaxy. According to its coordinates (R.A., Dec)J2000 = 18h51m39.7s, -05d34m51.1s, and the distanc…
On the radial velocity calibrations in the LAMOST Medium-Resolution Spectroscopic Survey of Nebulae
Juan-Juan Ren, Hong Wu, Chao-Jian Wu +12
Accurate radial velocity determinations of optical emission lines (i.e. [NII]6548,6584, H, and [SII]6717,6731) are very important for investigating the kinematics and dy…
LAMOST Medium-Resolution Spectral Survey of Galactic Nebula (LAMOST MRS-N): An overview of Scientific goals and Survey plan
Chao-Jian Wu, Hong Wu, Wei Zhang +10
Since Sep. 2018, LAMOST started the medium-resolution (R ) spectral survey (MRS). We proposed the spectral survey of Galactic nebulae, including \hii\ regions, HH object…
The evolution and dependence of the local mass-metallicity relation
Yu-Zhong Wu, Wei Zhang, Yong-Heng Zhao
We present a sample of 86,111 star-forming galaxies (SFGs) selected from the catalogue of the MPA-JHU emission-line measurements for SDSS DR7 to investigate the evolution of mass-m…
A systematic TMRT observational study of Galactic C/C ratios from Formaldehyde
Y. T. Yan, J. S. Zhang, C. Henkel +10
We present observations of the C-band (4.8 GHz) and Ku-band (14.5 GHz) K-doublet lines of HCO and the C-band (4.6 GHz) line of H…
Radial velocity measurements from LAMOST medium-resolution spectroscopic observations: A pointing towards the Kepler field
Nian Liu, Jian-Ning Fu, Weikai Zong +20
Radial velocity is one of key measurements in understanding the fundamental properties of stars, stellar clusters and the Galaxy. A plate of stars in the Kepler field were observed…
The LAMOST Complete Spectroscopic Survey of Pointing Area (LaCoSSPAr) in the Southern Galactic Cap I. The Spectroscopic Redshift Catalog
Ming Yang, Hong Wu, Fan Yang +29
We present a spectroscopic redshift catalog from the LAMOST Complete Spectroscopic Survey of Pointing Area (LaCoSSPAr) in the Southern Galactic Cap (SGC), which is designed to obse…
Quasars in the Galactic Anti-Center Area from the LAMOST DR3
Zhi-Ying Huo, Xiao-Wei Liu, Jian-Rong Shi +11
We present a sample of quasars discovered in the area of Galactic Anti-Center (GAC) of and , based on the LAMOST Data Rel…
The MZ relation for local star-forming galaxies
Yu-Zhong Wu, Shuang-Nan Zhang, Yong-Heng Zhao +1
We investigate the evolution of the mass-metallicity (MZ) relation with a large sample of 53,444 star-forming galaxies (SFGs) at , selected from the catalog of MPA-JHU…
A comprehensive study of the open cluster NGC 6866
Z. F. Bostanci, T. Ak, T. Yontan +15
We present CCD photometry of the field of the open cluster NGC 6866. Structural parameters of the cluster are determined utilizing the stellar density profile of the stars…
The LAMOST Stellar Parameter Pipeline at Peking University --- LSP3
Maosheng Xiang, Xiaowei Liu, Haibo Yuan +17
We introduce the LAMOST Stellar Parameter Pipeline at Peking University --- LSP3, developed and implemented for the determinations of radial velocity and stellar atmosp…
Evolution of oxygen and nitrogen abundances and nitrogen production mechanism in massive star-forming galaxies
Yu-Zhong Wu, Shuang-Nan Zhang
Utilizing the observational data of 55,318 star-forming galaxies (SFGs) selected from the catalog of MPA-JHU emission-line measurements for the SDSS DR8, we investigate the galaxy…
The Diagnostics and Possible Evolution in Active Galactic Nuclei Associated With Starburst Galaxies
Yu-Zhong Wu, Yong-Heng Zhao, Xian-Min Meng
We present a large sample which contains 45 Seyfert 1 galaxies (Sy1s), 46 hidden broad-line region (HBLR) Seyfert 2 galaxies (Sy2s), 57 non-HBLR Sy2s, and 22 starburst galaxies to…
The Different Nature in Seyfert 2 Galaxies With and Without Hidden Broad-Line Regions
Yu-Zhong Wu, En-Peng Zhang, Yan-Chun Liang +2
We compile a large sample of 120 Seyfert 2 galaxies (Sy2s) which contains 49 hidden broad-line region (HBLR) Sy2s and 71 non-HBLR Sy2s. From the difference in the power sources bet…