167 citations · 1.1k across the 43 of their papers we have counts for
43 papers
Towards Optimal Reconstruction of Shear Field with PDF-Folding
Haoran Wang, Jun Zhang, Hekun Li +1
Weak lensing provides a direct way of mapping the density distribution in the universe. To reconstruct the density field from the shear catalog, an important step is to build the s…
Dark against luminous matter around isolated central galaxies: a comparative study between modern surveys and Illustris-TNG
Pedro Alonso, Wenting Wang, Jun Zhang +6
Based on independent shear measurements using the DECaLS/DR8 imaging data, we measure the weak lensing signals around isolated central galaxies (ICGs) from SDSS/DR7 at .…
Halo Properties and Mass Functions of Groups/Clusters from the DESI Legacy Imaging Surveys DR9
Jiaqi Wang, Xiaohu Yang, Jun Zhang +16
Based on a large group/cluster catalog recently constructed from the DESI Legacy Imaging Surveys DR9 using an extended halo-based group finder, we measure and model the group-galax…
Shear Measurement with Poorly Resolved Images
Jun Zhang, Cong Liu, Pedro Alonso Vaquero +4
Weak lensing studies typically require excellent seeing conditions for the purpose of maximizing the number density of well-resolved galaxy images. It is interesting to ask to what…
Tolerance For the Pixelation Effect in Shear Measurement
Zhi Shen, Jun Zhang, Hekun Li +6
Images taken by space telescopes typically have a superb spatial resolution, but a relatively poor sampling rate due to the finite CCD pixel size. Beyond the Nyquist limit, it beco…
Massive Star-Forming Galaxies Have Converted Most of Their Halo Gas into Stars
Ziwen Zhang, Huiyuan Wang, Wentao Luo +5
In the local Universe, the efficiency for converting baryonic gas into stars is very low. In dark matter halos where galaxies form and evolve, the average efficiency varies with ga…