SITCOMTN-162: Testing the implementation of Metadetection and Cell-Based Coadds on Abell 360 LSSTComCam data

Gorsuch, Miranda R.; Kannawadi, Arun; Adari, Prakruth; Englert, Anthony; Becker, Matthew R.; Combet, Céline; Guinot, Axel; Mandelbaum, Rachel; Mau, Sidney; Pedersen, Eske M.; von der Linden, Anja

doi:10.71929/rubin/3000578

Title: SITCOMTN-162: Testing the implementation of Metadetection and Cell-Based Coadds on Abell 360 LSSTComCam data

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Abstract

The purpose of this technote is to test the technical quality of LSSTComCam commissioning data, specifically the Rubin_SV_38_7 field, by utilizing cell-based coadds and Metadetection by measuring the tangential and cross weak lensing shear profiles of the massive cluster Abell 360 (called A360 throughout the technote). The process entails generating the cell-based coadds for Metadetection to run on, identifying and removing cluster member galaxies, applying quality cuts, calibrating the shear measurements, and validation. Cell-based coadds and Metadetection are both currently in the process of being implemented within the LSST Science Pipelines at the time of this technote. There is substantial technical value in attempting a difficult measurement prior to full implementation. Measuring the tangential shear around A360 will showcase the current abilities of these algorithms, as well as highlight where work is still needed. As seen from the resulting shear profile of A360, the cell-based coadds and Metadetection are able to work in tandem to produce a shear catalog and resulting reduced shear profile. This technote is one part of a series studying A360 in order to both stress test the commissioning camera and demonstrate the technical capabilities of the Vera Rubin Observatory. We study the quality of the PSFmore »« less

Authors:

;

Department of Physics, University of Wisconsin-Madison
Department of Physics, Duke University; Department of Astrophysical Sciences, Princeton University
Department of Physics and Astronomy, Stony Brook University
Department of Physics, Brown University
High Energy Physics Division, Argonne National Laboratory
Université Grenoble Alpes, CNRS/IN2P3, LPSC
McWilliams Center for Cosmology & Astrophysics, Department of Physics, Carnegie Mellon University
Department of Physics, Duke University
Department of Physics, Harvard University

Publication Date:: Fri Oct 24 00:00:00 EDT 2025

Other Number(s):: Vera C. Rubin Observatory Commissioning Technical Note SITCOMTN-162

DOE Contract Number:: AC02-76SF00515

Research Org.:: NSF-DOE Vera C. Rubin Observatory

Sponsoring Org.:: U.S. National Science Foundation; U.S. Department of Energy Office of Science

Subject:: 79 ASTRONOMY AND ASTROPHYSICS

OSTI Identifier:: 3000578

DOI:: https://doi.org/10.71929/rubin/3000578

Citation Formats


                    Gorsuch, Miranda R., Kannawadi, Arun, Adari, Prakruth, Englert, Anthony, Becker, Matthew R., Combet, Céline, Guinot, Axel, Mandelbaum, Rachel, Mau, Sidney, Pedersen, Eske M., and von der Linden, Anja. SITCOMTN-162: Testing the implementation of Metadetection and Cell-Based Coadds on Abell 360 LSSTComCam data.  United States: N. p., 2025. 
        Web.  doi:10.71929/rubin/3000578.

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                    Gorsuch, Miranda R., Kannawadi, Arun, Adari, Prakruth, Englert, Anthony, Becker, Matthew R., Combet, Céline, Guinot, Axel, Mandelbaum, Rachel, Mau, Sidney, Pedersen, Eske M., & von der Linden, Anja. SITCOMTN-162: Testing the implementation of Metadetection and Cell-Based Coadds on Abell 360 LSSTComCam data.  United States.  doi:https://doi.org/10.71929/rubin/3000578

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                    Gorsuch, Miranda R., Kannawadi, Arun, Adari, Prakruth, Englert, Anthony, Becker, Matthew R., Combet, Céline, Guinot, Axel, Mandelbaum, Rachel, Mau, Sidney, Pedersen, Eske M., and von der Linden, Anja. 2025.  
"SITCOMTN-162: Testing the implementation of Metadetection and Cell-Based Coadds on Abell 360 LSSTComCam data".  United States.  doi:https://doi.org/10.71929/rubin/3000578.  https://www.osti.gov/servlets/purl/3000578. Pub date:Fri Oct 24 00:00:00 EDT 2025

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@article{osti_3000578,

  title        = {SITCOMTN-162: Testing the implementation of Metadetection and Cell-Based Coadds on Abell 360 LSSTComCam data},

  author       = {Gorsuch, Miranda R. and Kannawadi, Arun and Adari, Prakruth and Englert, Anthony and Becker, Matthew R. and Combet, Céline and Guinot, Axel and Mandelbaum, Rachel and Mau, Sidney and Pedersen, Eske M. and von der Linden, Anja},

  abstractNote = {The purpose of this technote is to test the technical quality of LSSTComCam commissioning data, specifically the Rubin_SV_38_7 field, by utilizing cell-based coadds and Metadetection by measuring the tangential and cross weak lensing shear profiles of the massive cluster Abell 360 (called A360 throughout the technote). The process entails generating the cell-based coadds for Metadetection to run on, identifying and removing cluster member galaxies, applying quality cuts, calibrating the shear measurements, and validation. Cell-based coadds and Metadetection are both currently in the process of being implemented within the LSST Science Pipelines at the time of this technote. There is substantial technical value in attempting a difficult measurement prior to full implementation. Measuring the tangential shear around A360 will showcase the current abilities of these algorithms, as well as highlight where work is still needed. As seen from the resulting shear profile of A360, the cell-based coadds and Metadetection are able to work in tandem to produce a shear catalog and resulting reduced shear profile. This technote is one part of a series studying A360 in order to both stress test the commissioning camera and demonstrate the technical capabilities of the Vera Rubin Observatory. We study the quality of the PSF modeling and impact it can have on cluster WL in [Combet et al., 2025], implementation of cell-based coadds and subsequent use for Metadetect [Sheldon et al., 2023] in this technote, photometric calibration in (in prep), source selection and photometric redshifts in [Adari et al., 2025], use of Anacal [Li et al., 2024] to produce a cluster shear profile in [Li et al., 2025], and background subtraction in this field and Fornax in [Zhou et al., 2025].},

  doi          = {10.71929/rubin/3000578},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Oct 24 00:00:00 EDT 2025},

  month        = {Fri Oct 24 00:00:00 EDT 2025}

}

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DOI: https://doi.org/10.71929/rubin/3000578

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