Angular power spectrum of galaxies in the 2MASS Redshift Survey. Issue 4 (10th October 2017)

• Record Type: Journal Article
• Authors: Ando, Shin'ichiro; Benoit-Lévy, Aurélien; Komatsu, Eiichiro
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 473:Issue 4(2018)
• Page Start: 4318
• Page End: 4325
• Publication Date: 2017-10-10
• Subjects: galaxies: fundamental parameters -- large-scale structure of Universe; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stx2634
• Languages: English
• ISSNs: 0035-8711

Abstract

Abstract: We present the measurement and interpretation of the angular power spectrum of nearby galaxies in the 2MASS Redshift Survey catalogue with spectroscopic redshifts up to z ≈ 0.1. We detect the angular power spectrum up to a multipole of ℓ ≈ 1000. We find that the measured power spectrum is dominated by galaxies living inside nearby galaxy clusters and groups. We use the halo occupation distribution (HOD) formalism to model the power spectrum, obtaining a fit with reasonable parameters. These HOD parameters are in agreement with the 2MASS galaxy distribution we measure towards the known nearby galaxy clusters, confirming validity of our analysis.