Статья

Detection of the large-scale tidal field with galaxy multiplet alignment in the DESI Y1 spectroscopic survey

C. LammanCenter for Astrophysics|Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138 ,Daniel J. EisensteinCenter for Astrophysics|Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138 ,J. E. Forero-RomeroObservatorio Astronómico, Universidad de los Andes , Cra. 1 No. 18A-10, Edificio H, CP 111711 Bogotá ,J. AguilarLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,S. AhlenPhysics Department, Boston University , 590 Commonwealth Avenue, Boston, MA 02215 ,S. BaileyLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,Davide BianchiDipartimento di Fisica ‘Aldo Pontremoli’, Università degli Studi di Milano , Via Celoria 16, I-20133 Milano ,David J. BrooksDepartment of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT ,T. ClaybaughLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,Axel de la MacorraInstituto de Física, Universidad Nacional Autónoma de México , Ciudad de México, CP 04510 ,Peter DoelDepartment of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT ,S. FerraroLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,Andreu Font-RiberaDepartment of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT ,E. GaztañagaInstitute of Cosmology and Gravitation, University of Portsmouth , Dennis Sciama Building, Portsmouth PO1 3FX ,Satya Gontcho A GontchoLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,G. GutiérrezFermi National Accelerator Laboratory , PO Box 500, Batavia, IL 60510 ,Cullan HowlettSchool of Mathematics and Physics, University of Queensland , 4072 ,Anthony KreminLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,Andrew LambertLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,Martin LandriauLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,L. Le GuillouSorbonne UniversitéM. E. LeviLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 ,Aaron MeisnerNSF NOIRLab , 950 N Cherry Ave, Tucson, AZ 85719 ,R. MiquelInstitució Catalana de Recerca i Estudis Avançats, Passeig de Lluís Companys , 23, E-08010 Barcelona ,John MoustakasDepartment of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211 ,Jeffrey A. NewmanDepartment of Physics and Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh , 3941 O’Hara Street, Pittsburgh, PA 15260 ,Gustavo NizDepartamento de Física, Universidad de Guanajuato – DCI , C.P. 37150, Leon, Guanajuato ,Francisco PradaInstituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía , s/n, E-18008 Granada ,Ignasi Pérez-RàfolsDepartament de Física, EEBE , Universitat Politècnica de Catalunya, c/Eduard Maristany 10, E-08930 Barcelona ,A.J. RossCenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210 ,Graziano RossiDepartment of Physics and Astronomy, Sejong University , Seoul, 143–747 ,E. SánchezCIEMAT , Avenida Complutense 40, E-28040 Madrid ,Michael SchubnellDepartment of Physics, University of Michigan , Ann Arbor, MI 48109 ,David SprayberryNSF NOIRLab , 950 N Cherry Ave, Tucson, AZ 85719 ,G. TarléMichigan Institute for Research in Astrophysics, University of Michigan , Ann Arbor, MI 48109 ,M. Vargas-MagañaInstituto de Física, Universidad Nacional Autónoma de México , Ciudad de México, CP 04510 ,Benjamin A. WeaverNSF NOIRLab , 950 N Cherry Ave, Tucson, AZ 85719 ,H. ZouNational Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd., Chaoyang District, Beijing 100012 ,

2024en

ABI

Аннотация

ABSTRACT We explore correlations between the orientations of small galaxy groups, or ‘multiplets’, and the large-scale gravitational tidal field. Using data from the Dark Energy Spectroscopic Instrument (DESI) Y1 survey, we detect the intrinsic alignment (IA) of multiplets to the galaxy-traced matter field out to separations of $100\,h^{-1}$ Mpc. Unlike traditional IA measurements of individual galaxies, this estimator is not limited by imaging of galaxy shapes and allows for direct IA detection beyond redshift $z=1$. Multiplet alignment is a form of higher order clustering, for which the scale-dependence traces the underlying tidal field and amplitude is a result of small-scale ($\lt 1h^{-1}$ Mpc) dynamics. Within samples of bright galaxies, luminous red galaxies (LRG) and emission-line galaxies, we find similar scale-dependence regardless of intrinsic luminosity or colour. This is promising for measuring tidal alignment in galaxy samples that typically display no IA. DESI’s LRG mock galaxy catalogues created from the A bacusS ummitN-body simulations produce a similar alignment signal, though with a 33 per cent lower amplitude at all scales. An analytic model using a non-linear power spectrum (NLA) only matches the signal down to 20 $h^{-1}$ Mpc. Our detection demonstrates that galaxy clustering in the non-linear regime of structure formation preserves an interpretable memory of the large-scale tidal field. Multiplet alignment complements traditional two-point measurements by retaining directional information imprinted by tidal forces, and contains additional line-of-sight information compared to weak lensing. This is a more effective estimator than the alignment of individual galaxies in dense, blue, or faint galaxy samples.

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Идентификаторы

DOI: 10.1093/mnras/stae2290

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