From the 1 of 8k papers with an AI index.
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35 papers · 2 filters
The Next Generation Virgo Cluster Survey. IX. Estimating the Efficiency of Galaxy Formation on the Lowest-Mass Scales
Jonathan Grossauer, James E. Taylor, Laura Ferrarese +11
The Next Generation Virgo Cluster Survey has recently determined the luminosity function of galaxies in the core of the Virgo cluster down to unprecedented magnitude and surface br…
An ultra-luminous quasar at z=5.363 with a ten billion solar mass black hole and a Metal-Rich DLA at z~5
Feige Wang, Xue-Bing Wu, Xiaohui Fan +11
We report the discovery of an ultra-luminous quasar J030642.51+185315.8 (hereafter J0306+1853) at redshift 5.363, which hosts a super-massive black hole (SMBH) with $M_{BH} = (1.07…
On the metallicity gradients of the Galactic disk as revealed by LSS-GAC red clump stars
Yang Huang, Xiao-Wei Liu, Hua-Wei Zhang +10
Using a sample of over 70, 000 red clump (RC) stars with -% distance accuracy selected from the LAMOST Spectroscopic Survey of the Galactic Anti-center (LSS-GAC), we study t…
The evolution of stellar metallicity gradients of the Milky Way disk from LSS-GAC main sequence turn-off stars: a two-phase disk formation history?
M. -S. Xiang, X. -W. Liu, H. -B. Yuan +8
We use 297 042 main sequence turn-off stars selected from the LSS-GAC to determine the radial and vertical gradients of stellar metallicity of the Galactic disk in the anti-center…
The LAMOST Spectroscopic Survey of Globular Clusters in M 31 and M 33. I. Catalog and new identifications
B. -Q. Chen, X. -W. Liu, M. -S. Xiang +12
We present a catalog of 908 objects observed with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) in the vicinity fields of M31 and M33, targeted as globular…
Galactic Disk Bulk Motions as Revealed by the LSS-GAC DR2
Ning-Chen Sun, Xiao-Wei Liu, Yang Huang +10
We report a detailed investigation of the bulk motions of the nearby Galactic stellar disk, based on three samples selected from the LSS-GAC DR2: a global sample containing 0.57 mi…