Enhancing Multiplet Alignment Measurements with Imaging
Abstract We demonstrate that measurements of the gravitational tidal field made with spectroscopic redshifts can be improved with information from imaging surveys. The average orientation of small groups of galaxies, or “multiplets” is correlated with large-scale structure and is used to measure the direction of tidal forces. Previously, multiplet intrinsic alignment has been measured in DESI using galaxies that have spectroscopic redshifts. The DESI Legacy Imaging catalog can be used to supplement multiplet catalogs. Our findings show that galaxy positions from the imaging catalog produce a measurement similar to the measurements made with only spectroscopic data. This demonstrates that imaging can improve our signal-to-noise ratio for multiplet alignment in DESI.
Authors
- R. R. Joyce (ORCID: https://orcid.org/0000-0003-0201-5241)
- D. Brooks (ORCID: https://orcid.org/0000-0002-8458-5047)
- N. Palanque‐Delabrouille (ORCID: https://orcid.org/0000-0003-3188-784X)
- S. Nadathur (ORCID: https://orcid.org/0000-0001-9070-3102)
- Gregory Tarlé (ORCID: https://orcid.org/0000-0003-1704-0781)
- Andreu Font-Ribera (ORCID: https://orcid.org/0000-0002-3033-7312)
- David Sprayberry (ORCID: https://orcid.org/0000-0001-7583-6441)
- D. Bianchi (ORCID: https://orcid.org/0000-0001-9712-0006)
- David J. Schlegel (ORCID: https://orcid.org/0000-0002-5042-5088)
- Ignasi Pérez-Ràfols (ORCID: https://orcid.org/0000-0001-6979-0125)
- Axel de la Macorra (ORCID: https://orcid.org/0000-0002-1769-1640)
- Martin Landriau (ORCID: https://orcid.org/0000-0003-1838-8528)
- Jorge Jiménez (ORCID: https://orcid.org/0000-0001-8528-3473)
- Marc Manera (ORCID: https://orcid.org/0000-0003-4962-8934)
- Gaston Gutierrez (ORCID: https://orcid.org/0000-0003-0825-0517)
- O. Lahav
- J. Aguilar (ORCID: https://orcid.org/0000-0003-0822-452X)
- Eusebio Sanchez (ORCID: https://orcid.org/0000-0002-9646-8198)
- Satya Gontcho A Gontcho (ORCID: https://orcid.org/0000-0003-3142-233X)
- ENRIQUE GAZTAÑAGA (ORCID: https://orcid.org/0000-0001-9632-0815)
- Daniel J. Eisenstein (ORCID: https://orcid.org/0000-0002-2929-3121)
- Andrei Cuceu (ORCID: https://orcid.org/0000-0002-2169-0595)
- Joseph Harry Silber (ORCID: https://orcid.org/0000-0002-3461-0320)
- J. E. Forero-Romero (ORCID: https://orcid.org/0000-0002-2890-3725)
- Steven P. Ahlen (ORCID: https://orcid.org/0000-0001-6098-7247)
- R. Miquel (ORCID: https://orcid.org/0000-0002-6610-4836)
- Theodore S. Kisner (ORCID: https://orcid.org/0000-0003-3510-7134)
- Biprateep Dey (ORCID: https://orcid.org/0000-0002-5665-7912)
- R. Kehoe (ORCID: https://orcid.org/0000-0002-7101-697X)
- Mustapha Ishak (ORCID: https://orcid.org/0000-0002-6024-466X)
- Hee‐Jong Seo (ORCID: https://orcid.org/0000-0002-6588-3508)
- C. Lamman (ORCID: https://orcid.org/0000-0002-6731-9329)
- T. Claybaugh (ORCID: https://orcid.org/0000-0002-5024-6987)
- Graziano Rossi
- Benjamin A. Weaver
- P. Doel (ORCID: https://orcid.org/0000-0002-6397-4457)
- F. Prada (ORCID: https://orcid.org/0000-0001-7145-8674)
- Alexus Annika Kumwembe (ORCID: https://orcid.org/0009-0009-8150-684X)
Institutions
- Boston University (US)
- Institució Catalana de Recerca i Estudis Avançats (ES)
- Universidad Complutense de Madrid (ES)
- Universitat Autònoma de Barcelona (ES)
- Fermi National Accelerator Laboratory (US)
- Institute of Space Sciences (ES)
- Lawrence Berkeley National Laboratory (US)
- State Street (United States) (US)
- Universidad de Los Andes (CO)
- The University of Texas at Dallas (US)
- University of Pittsburgh (US)
- Southern Methodist University (US)
- University of Toronto (CA)
- Institute for High Energy Physics (ES)
- University of Milan (IT)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- University of Michigan (US)
- Brera Astronomical Observatory (IT)
- Sejong University (KR)
- Institut d'Estudis Espacials de Catalunya (ES)
- Ohio University (US)
- Center for Astrophysics Harvard & Smithsonian (US)
- CEA Paris-Saclay (FR)
- Community Science and Data Center (US)
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano (IT)
- NSF NOIRLab (US)
- Instituto de Astrofísica de Andalucía (ES)
- Institut de Recherche sur les Lois Fondamentales de l'Univers (FR)
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (ES)
- University College London (GB)
- University of Virginia (US)
- The Ohio State University (US)
- University of Portsmouth (GB)
- St. Mary's College of Maryland (US)
- Saint Mary's College (US)
- Universidad Nacional Autónoma de México (MX)
- Universitat Politècnica de Catalunya (ES)
Publication Details
- Journal
- Research Notes of the AAS
- Published
- 2025-11-12
- DOI
- https://doi.org/10.3847/2515-5172/ae1c19
- Citations
- 1
- Primary Topic
- Galaxies: Formation, Evolution, Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.15