Herschel-ATLAS/GAMA: SDSS cross-correlation induced by weak lensing

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dc.contributor.authorGonzalez-Nuevo, J.
dc.contributor.authorLapi, A.
dc.contributor.authorNegrello, M.
dc.contributor.authorDanese, L.
dc.contributor.authorDe Zotti, G.
dc.contributor.authorAmber, S.
dc.contributor.authorBae, Sung Eun
dc.contributor.authorBland-Hawthorn, J.
dc.contributor.authorBourne, N.
dc.contributor.authorBrough, S.
dc.contributor.authorBussmann, R.S.
dc.contributor.authorCai, Z-Y.
dc.contributor.authorCooray, A.
dc.contributor.authorDriver, S.P.
dc.contributor.authorDunne, L.
dc.contributor.authorDye, S.
dc.contributor.authorEales, S.
dc.contributor.authorIbar, E.
dc.contributor.authorIvison, R.
dc.contributor.authorLiske, J.
dc.contributor.authorLoveday, J.
dc.contributor.authorMaddox, S.
dc.contributor.authorMichalowski, M.J.
dc.contributor.authorRobotham, A.S.G.
dc.contributor.authorScott, D.
dc.contributor.authorSmith, M.W.L.
dc.contributor.authorValiante, E.
dc.contributor.authorXia, J-Q.
dc.date.accessioned2015-05-04T21:46:19Z
dc.date.available2015-05-04T21:46:19Z
dc.date.issued2014en
dc.description.abstractWe report a highly significant (> 10 ) spatial correlation between galaxies with S350μm > 30mJy detected in the equatorial fields of the Herschel Astrophysical Ter- ahertz Large Area Survey (H-ATLAS) with estimated redshifts & 1.5, and SDSS or GAMA galaxies at 0.2 6 z 6 0.6. The significance of the cross-correlation is much higher than those reported so far for samples with non-overlapping redshift distribu- tions 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 ac- counted 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 1013.2–1014.5M⊙. The signal detected on larger scales appears to reflect the clustering of such halos.en
dc.identifier.citationGonzalez-Nuevo, J., Lapi, A., Negrello, M., Danese, L., De Zotti, G., Amber, S., Baes, M., Bland-Hawthorn, J., Bourne, N., Brough, S., Bussmann, R.S., Cai, Z-Y., Cooray, A., Driver, S.P., Dunne, L., Dye, S., Eales, S., Ibar, E., Ivison, R., Liske, J., Loveday, J., Maddox, S., Michalowski, M.J., Robotham, A.S.G., Scott, D., Smith, M.W.L., Valiante, E., Xia, J-Q. (2014) Herschel-ATLAS/GAMA: SDSS cross-correlation induced by weak lensing. Monthly Notices of the Royal Astronomical Society, 442, pp. 2680-2690en
dc.identifier.doihttps://doi.org/10.1093/mnras/stu1041
dc.identifier.urihttp://hdl.handle.net/10092/10383
dc.language.isoen
dc.publisherUniversity of Canterbury. Physics and Astronomyen
dc.rights.urihttps://hdl.handle.net/10092/17651en
dc.subjectcosmologyen
dc.subjectlarge-scale structure of universeen
dc.subjectgalaxiesen
dc.subject.anzsrcFields of Research::51 - Physical sciences::5101 - Astronomical sciences::510103 - Cosmology and extragalactic astronomyen
dc.titleHerschel-ATLAS/GAMA: SDSS cross-correlation induced by weak lensingen
dc.typeJournal Article
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