Enhancing multiplet alignment measurements with imaging

Alexus Annika Kumwembe; Claire Lamman; Daniel Eisenstein; Jessica Nicole Aguilar; Steven Ahlen; Davide Bianchi; David Brooks; Todd Claybaugh; Andrei Cuceu; Axel de la Macorra; Biprateep Dey; Peter Doel; Andreu Font-Ribera; Jaime E. Forero-Romero; Enrique Gaztanaga; Satya Gontcho A Gontcho; Gaston Gutierrez; Mustapha Ishak; Jorge Jimenez; Dick Joyce; Robert Kehoe; Theodore Kisner; Ofer Lahav; Martin Landriau; Marc Manera; Ramon Miquel; Seshadri Nadathur; Nathalie Palanque-Delabrouille; Ignasi Perez-Rafols; Francisco Prada; Graziano Rossi; Eusebio Sanchez; David Schlegel; Hee-Jong Seo; Joseph Harry Silber; David Sprayberry; Gregory Tarle; Benjamin Alan Weaver

doi:10.3847/2515-5172/ae1c19

Enhancing multiplet alignment measurements with imaging

Alexus Annika Kumwembe, Claire Lamman, Daniel Eisenstein, Jessica Nicole Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Andrei Cuceu, Axel de la Macorra, Biprateep Dey, Peter Doel, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztanaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Mustapha Ishak, Jorge Jimenez, Dick JoyceRobert Kehoe, Theodore Kisner, Ofer Lahav, Martin Landriau, Marc Manera, Ramon Miquel, Seshadri Nadathur, Nathalie Palanque-Delabrouille, Ignasi Perez-Rafols, Francisco Prada, Graziano Rossi, Eusebio Sanchez, David Schlegel, Hee-Jong Seo, Joseph Harry Silber, David Sprayberry, Gregory Tarle, Benjamin Alan Weaver

Institute of Cosmology & Gravitation

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	305
Number of pages	6
Journal	Research Notes of the AAS
Volume	9
DOIs	https://doi.org/10.3847/2515-5172/ae1c19
Publication status	Published - 5 Nov 2025

Keywords

astro-ph.CO

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10.3847/2515-5172/ae1c19

Enhancing Multiplet Alignment Measurements with Imaging - IOPscienceFinal published version, 470 KBLicence: CC BY

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Kumwembe, A. A., Lamman, C., Eisenstein, D., Aguilar, J. N., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Cuceu, A., Macorra, A. D. L., Dey, B., Doel, P., Font-Ribera, A., Forero-Romero, J. E., Gaztanaga, E., Gontcho, S. G. A., Gutierrez, G., Ishak, M., Jimenez, J., ... Weaver, B. A. (2025). Enhancing multiplet alignment measurements with imaging. Research Notes of the AAS, 9, Article 305. https://doi.org/10.3847/2515-5172/ae1c19

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title = "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.",

keywords = "astro-ph.CO",

author = "Kumwembe, \{Alexus Annika\} and Claire Lamman and Daniel Eisenstein and Aguilar, \{Jessica Nicole\} and Steven Ahlen and Davide Bianchi and David Brooks and Todd Claybaugh and Andrei Cuceu and Macorra, \{Axel de la\} and Biprateep Dey and Peter Doel and Andreu Font-Ribera and Forero-Romero, \{Jaime E.\} and Enrique Gaztanaga and Gontcho, \{Satya Gontcho A\} and Gaston Gutierrez and Mustapha Ishak and Jorge Jimenez and Dick Joyce and Robert Kehoe and Theodore Kisner and Ofer Lahav and Martin Landriau and Marc Manera and Ramon Miquel and Seshadri Nadathur and Nathalie Palanque-Delabrouille and Ignasi Perez-Rafols and Francisco Prada and Graziano Rossi and Eusebio Sanchez and David Schlegel and Hee-Jong Seo and Silber, \{Joseph Harry\} and David Sprayberry and Gregory Tarle and Weaver, \{Benjamin Alan\}",

note = "One figure, submitted to RNAAS",

year = "2025",

month = nov,

day = "5",

doi = "10.3847/2515-5172/ae1c19",

language = "English",

volume = "9",

journal = "Research Notes of the AAS",

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Kumwembe, AA, Lamman, C, Eisenstein, D, Aguilar, JN, Ahlen, S, Bianchi, D, Brooks, D, Claybaugh, T, Cuceu, A, Macorra, ADL, Dey, B, Doel, P, Font-Ribera, A, Forero-Romero, JE, Gaztanaga, E, Gontcho, SGA, Gutierrez, G, Ishak, M, Jimenez, J, Joyce, D, Kehoe, R, Kisner, T, Lahav, O, Landriau, M, Manera, M, Miquel, R, Nadathur, S, Palanque-Delabrouille, N, Perez-Rafols, I, Prada, F, Rossi, G, Sanchez, E, Schlegel, D, Seo, H-J, Silber, JH, Sprayberry, D, Tarle, G & Weaver, BA 2025, 'Enhancing multiplet alignment measurements with imaging', Research Notes of the AAS, vol. 9, 305. https://doi.org/10.3847/2515-5172/ae1c19

TY - JOUR

T1 - Enhancing multiplet alignment measurements with imaging

AU - Kumwembe, Alexus Annika

AU - Lamman, Claire

AU - Eisenstein, Daniel

AU - Aguilar, Jessica Nicole

AU - Ahlen, Steven

AU - Bianchi, Davide

AU - Brooks, David

AU - Claybaugh, Todd

AU - Cuceu, Andrei

AU - Macorra, Axel de la

AU - Dey, Biprateep

AU - Doel, Peter

AU - Font-Ribera, Andreu

AU - Forero-Romero, Jaime E.

AU - Gaztanaga, Enrique

AU - Gontcho, Satya Gontcho A

AU - Gutierrez, Gaston

AU - Ishak, Mustapha

AU - Jimenez, Jorge

AU - Joyce, Dick

AU - Kehoe, Robert

AU - Kisner, Theodore

AU - Lahav, Ofer

AU - Landriau, Martin

AU - Manera, Marc

AU - Miquel, Ramon

AU - Nadathur, Seshadri

AU - Palanque-Delabrouille, Nathalie

AU - Perez-Rafols, Ignasi

AU - Prada, Francisco

AU - Rossi, Graziano

AU - Sanchez, Eusebio

AU - Schlegel, David

AU - Seo, Hee-Jong

AU - Silber, Joseph Harry

AU - Sprayberry, David

AU - Tarle, Gregory

AU - Weaver, Benjamin Alan

N1 - One figure, submitted to RNAAS

PY - 2025/11/5

Y1 - 2025/11/5

N2 - 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.

AB - 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.

KW - astro-ph.CO

U2 - 10.3847/2515-5172/ae1c19

DO - 10.3847/2515-5172/ae1c19

M3 - Article

SN - 2515-5172

VL - 9

JO - Research Notes of the AAS

JF - Research Notes of the AAS

M1 - 305

ER -

Enhancing multiplet alignment measurements with imaging

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