MNRAS-2014-González-Nuevo-2680-90.pdf (2.48 MB)
Herschel-ATLAS/GAMA: SDSS cross-correlation induced by weak lensing
journal contribution
posted on 2023-06-08, 21:14 authored by J González-Nuevo, A Lapi, M Negrello, L Danese, G De Zotti, S Amber, M Baes, J Bland-Hawthorn, N Bourne, S Brough, R S Bussmann, Z -Y Cai, A Cooray, S P Driver, L Dunne, S Dye, S Eales, E Ibar, R Ivison, J Liske, Jonathan LovedayJonathan Loveday, S Maddox, M J Micha owski, A S G Robotham, D Scott, M W L Smith, E Valiante, J -Q XiaWe report a highly significant (>10s) spatial correlation between galaxies with S350?µm = 30?mJy detected in the equatorial fields of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) with estimated redshifts ? 1.5, and Sloan Digital Sky Survey (SDSS) or Galaxy And Mass Assembly (GAMA) galaxies at 0.2 = z = 0.6. The significance of the cross-correlation is much higher than those reported so far for samples with non-overlapping redshift distributions selected in other wavebands. Extensive, realistic simulations of clustered sub-mm galaxies amplified by foreground structures confirm that the cross-correlation can be explained by weak gravitational lensing (µ < 2). The simulations also show that the measured amplitude and range of angular scales of the signal are larger than can be accounted for by galaxy–galaxy weak lensing. However, for scales ? 2?arcmin, the signal can be reproduced if SDSS/GAMA galaxies act as signposts of galaxy groups/clusters with halo masses in the range 1013.2–1014.5?M?. The signal detected on larger scales appears to reflect the clustering of such haloes.
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- Published
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- Published version
Journal
Monthly Notices of the Royal Astronomical SocietyISSN
0035-8711Publisher
Oxford University PressExternal DOI
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3Volume
442Page range
2680-2690Department affiliated with
- Physics and Astronomy Publications
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- Yes
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- Yes
Legacy Posted Date
2015-06-24First Open Access (FOA) Date
2015-06-24First Compliant Deposit (FCD) Date
2015-06-24Usage metrics
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