An Extended Halo-based Group/Cluster finder: application to the DESI legacy imaging surveys DR8

We extend the halo-based group finder developed by Yang et al. (2005b) to use data {\it simultaneously} with either photometric or spectroscopic redshifts. A mock galaxy redshift surveys constructed from a high-resolution N-body simulation is used to evaluate the performance of this extended group finder. For galaxies with magnitude ${\rm z\le 21}$ and redshift $0

Keywords:

• Astrophysics
• Low Mass
• Photometry (optics)
• Galaxy
• Redshift
• Physics
• high mass
• Halo
• 3d coordinates

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