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19 April 2024 |
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Theoretical predictions on the clustering of SCUBA galaxies and implications for small-scale fluctuations at sub-mm wavelengths | | M. Magliocchetti
; L. Moscardini
; P. Panuzzo
; G.L. Granato
; G. De Zotti
; L. Danese
; | | Date: |
27 Feb 2001 | | Journal: | Mon.Not.Roy.Astron.Soc. 325 (2001) 1553 | | Subject: | astro-ph | | Abstract: | This paper investigates the clustering properties of SCUBA-selected galaxies in the framework of a unifying scheme relating the formation of QSOs and spheroids (Granato et al. 2000). The theoretical angular correlation function is derived for different bias functions, corresponding to different values of the ratio $M_{
m halo}/M_{
m sph}$ between the mass of the dark halo and the final mass in stars. SCUBA sources are predicted to be strongly clustered, with a clustering strength increasing with mass. We show that the model accounts for the clustering of Lyman-break Galaxies, seen as the optical counterpart of low- to intermediate-mass primeval spheroidal galaxies and is also consistent with the observed angular correlation function of Extremely Red Objects. Best agreement is obtained for $M_{
m halo}/M_{
m sph}=100$. We also consider the implications for small scale fluctuations observed at sub-mm wavelengths by current or forthcoming experiments aimed at mapping the Cosmic Microwave Background (CMB). The predicted amplitude of the clustering signal in the 350 GHz channel of the Planck mission strongly depends on the halo-to-bulge mass ratio and may be of comparable amplitude to primary CMB anisotropies for multipole numbers $lsimgt 50$. | | Source: | arXiv, astro-ph/0102464 | | Services: | Forum | Review | PDF | Favorites | |
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