33 citations · 201 across the 21 of their papers we have counts for
6 papers · 1 filter
Satellite Content and Halo Mass of Galaxy Clusters: Comparison between Red-Sequence and Halo-based Optical Cluster Finders
Jesse B. Golden-Marx, Ying Zu, Jiaqi Wang +3
Cluster cosmology depends critically on how optical clusters are selected from imaging surveys. We compare the conditional luminosity function (CLF) and weak lensing halo masses be…
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…
First measurement of the characteristic depletion radius of dark matter haloes from weak lensing
Matthew Fong, Jiaxin Han, Jun Zhang +6
We use weak lensing observations to make the first measurement of the characteristic depletion radius, one of the three radii that characterize the region where matter is being dep…