LoVoCCS. III. Third Generation Pipeline & The Hercules Supercluster
Anthony M. Englert, Shenming Fu, Ian Dell'Antonio, Mohamed H. Abdullah, Shrouk Abdulshafy, Eddie Aljamal, William K. Black, Nicole Chidester, Doug Clowe, M. C. Cooper, Megan Donahue, Zacharias Escalante, August Evrard, Eric Habjan, Soren Helhoski, Binyang Liu, Jacqueline McCleary, Hironao Miyatake, Mireia Montes, Priyamvada Natarajan, Jessica Nelson, Michelle Ntampaka, Elena Pierpaoli, Marc Postman, Rahul Shinde, Jubee Sohn, Fuyuko Tanaka, David Turner, Keiichi Umetsu, Yousuke Utsumi, Ray Wang, Gillian Wilson
astro-ph.GA, astro-ph.CO
Submitted: 2026-07-17
Comments: Submitted to ApJS
Code: https://github.com/esheldon/metadetect
License: http://creativecommons.org/licenses/by/4.0/
The gist: The Local Volume Complete Cluster Survey (LoVoCCS) is a volume-complete survey of over one-hundred nearby (0.03 < z < 0.12), X-ray luminous (L 500 > 10 44 erg s-1) galaxy clusters in the southern sky.
Terminology
Abstract
The Local Volume Complete Cluster Survey (LoVoCCS) is a volume-complete survey of over one-hundred nearby (0.03 < z < 0.12), X-ray luminous (L 500 > 10 44 erg s-1) galaxy clusters in the southern sky. Observations for the survey concluded in December 2025, reaching Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) Year 1-2 depth in each field and providing observations with 1" seeing for weak lensing science. In this paper, we present the latest pipeline for reducing observations using the third-generation of the LSST Science Pipelines. We use recent observations of the Hercules Supercluster to validate the pipeline's data-products and conduct an extensive multi-plane weak-lensing analysis of a about 16 deg squared complex covering Abell 2147, 2151, 2152, and several additional structures. We confirm that the dynamical mass of the complex is biased due to the dynamical state of Abell 2147, which is consistent with being about 0.2-0.4 Gyr out-of periapsis, and estimate that the total mass of the supercluster is 8.9+1.7-1.4 times 10 14 M.
Sources
- An Overview of the LSST Image Processing Pipelines
- The Pan-STARRS1 Surveys
- Data Release 1 of the Dark Energy Spectroscopic Instrument
- Measurement of the Half-Light Radius for the Tucana Dwarf Spheroidal Galaxy
- Metacalibration: Direct Self-Calibration of Biases in Shear Measurement
- The Vera C. Rubin Observatory Data Butler and Pipeline Execution System
- LSST Science Book, Version 2.0
- Dissecting the Perseus-Pisces supercluster observed with CFHT-MegaCam: Investigating environmental effects on galaxy morphology
- Evolution of the Intracluster Medium Between 0.2 < z < 1.3 in a Chandra Sample of 70 Galaxy Clusters
- Weak-Lensing Detection of Intercluster Filaments in Three Nearby Cluster Systems
- The LSST Dark Energy Science Collaboration (DESC) Science Requirements Document
- Dark Energy Survey Year 6 Results: Cell-based Coadds and Metadetection Weak Lensing Shape Catalogue
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