128 citations · 471 across the 21 of their papers we have counts for
22 papers
The Gas-to-Dust Ratio Investigation in the Massive Star-Forming region M17
Qi Zhao, Zhibo Jiang, Chao-Jian Wu +4
M17 is a well-known massive star-forming region, and its Gas-to-Dust Ratio (GDR) may vary significantly compared to the other areas. The mass of gas can be traced by the …
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…
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…
Two Portions of Sagittarius Stream in the LAMOST Complete Spectroscopic Survey of Pointing Area at Southern Galactic Cap
J. K. Zhao, X. H. Ye, H. Wu +6
We constructed a sample of 13,798 stars with , log , [Fe/H], radial velocity, proper motions and parallaxes from LAMOST DR5 and Gaia DR2 in the LAMOST Complete Spect…
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…
A Mysterious Ring in Dark Space?
Wei Zhang, Fan Yang, Hong Wu +10
We report the discovery of a low-surface-brightness (27.42 mag arcsec^(-2) in g band) nebula, which has a ring-like shape in the Beijing-Arizona Sky Survey (BASS). Positive detecti…
LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan
Chao Liu, Jianning Fu, Jianrong Shi +38
Since September 2018, LAMOST starts a new 5-year medium-resolution spectroscopic survey (MRS) using bright/gray nights. We present the scientific goals of LAMOST-MRS and propose a…
Irregular changes in Hα emission line of V423 Aur observed by LAMOST Medium-Resolution Spectrographs
Chao-Jian Wu, Hong Wu, Chih-Hao Hsia +8
We obtained 7 spectra of the Be star V423 Aur on Dec. 5th, 2017 using the LAMOST Medium-Resolution Spectrograph with exposures from 600 to 1200 seconds. These spectra show the irre…
Properties of Radial Velocities measurement based on LAMOST-II Medium-Resolution Spectroscopic Observations
R. Wang, A. -L. Luo, J. -J. Chen +28
The radial velocity (RV) is a basic physical quantity which can be determined through Doppler shift of the spectrum of a star. The precision of RV measurement depends on the resolu…
An H Imaging Survey of the Low-surface-brightness Galaxies Selected from the Fall Sky Region of the 40 ALFALFA \ion{H}{1} Survey
Fengjie Lei, Hong Wu, Wei Du +11
We present the observed H flux and derived star formation rates (SFRs) for a fall sample of lowsurfacebrightness galaxies (LSBGs). The sample is selected from the fall sky…
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…
Molecular Gas and Star-Formation In Low Surface Brightness Galaxies
Tian-Wen Cao, Hong Wu, Wei Du +12
We have obtained CO(J=2-1) spectra of nine face-on low surface brightness galaxies(LSBGs) using the JCMT 15-meter telescope and observed Ha images using the 2.16-meter telescope of…
FGK 22 m Excess Stars in LAMOST DR2 Stellar Catalog
Chao-Jian Wu, Hong Wu, Kang Liu +8
Since the release of LAMOST (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope) catalog, we have the opportunity to use the LAMOST DR2 stellar catalog and \emph{WISE Al…
Optical Observations of the Type Ia Supernova 2011fe in M101 for Nearly 500 Days
Kaicheng Zhang, Xiaofeng Wang, JuJia Zhang +17
We present well-sampled optical observations of the bright Type Ia supernova (SN~Ia) SN 2011fe in M101. Our data, starting from days before maximum light and extending to…
Thirty Meter Telescope International Observatory Detailed Science Case 2024
Warren Skidmore, Bob Kirshner, David Andersen +168
The Thirty Meter Telescope (TMT) International Observatory (TIO) will be a revolutionary leap forward in astronomical observing capabilities, enabling us to address some of the mos…
The THU-NAOC Transient Survey: the Performance and the First-year Result
Tianmeng Zhang, Xiaofeng Wang, Junchen Chen +18
The Tsinghua University-National Astronomical Observatories of China (NAOC) Transient Survey (TNTS) is an automatic survey for a systematic exploration of optical transients (OTs),…
Bright 22 m Excess Candidates from WISE All-Sky Catalog and Hipparcos Main Catalog
Chao-Jian Wu, Hong Wu, Man-I Lam +5
In this paper we present a catalog which includes 141 bright candidates ( mag, V band) showing the infrared (IR) excess at 22 m. Of which, 38 stars are known IR exces…
Type IIn Supernova SN 2010jl: Optical Observations for Over 500 Days After Explosion
Tianmeng Zhang, Xiaofeng Wang, Chao Wu +16
We present extensive optical observations of a Type IIn supernova (SN) 2010jl for the first 1.5 years after the discovery. The UBVRI light curves demonstrated an interesting two-st…
The Debris Disk Candidates: Eleven 24m excess stars in Spitzer SWIRE Fields
Hong Wu, Chao-Jian Wu, Chen Cao +2
We present the optical to mid-infrared SEDs of 11 debris disk candidates from SWIRE fields. All these candidates are selected from SWIRE 24m sources matched with both…
New Supernova Candidates from SDSS-DR7 of Spectral Survey
Liangping Tu, Ali Luo, Fuchao Wu +2
The letter presents 25 discovered supernova candidates from SDSS-DR7 with our dedicated method, called Sample Decrease, and 10 of them were confirmed by other research groups, and…