Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26240
Title: | Dependence of GAMA galaxy halo masses on the cosmic web environment from 100 deg2 of KiDS weak lensing data | Authors: | Brouwer, Margot M. Cacciato, Marcello Dvornik, Andrej Eardley, Lizzie Heymans, Catherine Hoekstra, Henk Kuijken, Konrad McNaught-Roberts, Tamsyn Sifón, Cristóbal Viola, Massimo Alpaslan, Mehmet Bilicki, Maciej Bland-Hawthorn, Joss Brough, Sarah Choi, Ami Driver, Simon P. Erben, Thomas GRADO, ANIELLO Hildebrandt, Hendrik Holwerda, Benne W. Hopkins, Andrew M. de Jong, Jelte T. A. Liske, Jochen McFarland, John Nakajima, Reiko NAPOLITANO, NICOLA ROSARIO Norberg, Peder Peacock, John A. RADOVICH, MARIO Robotham, Aaron S. G. Schneider, Peter Sikkema, Gert van Uitert, Edo Verdoes Kleijn, Gijs Valentijn, Edwin A. |
Issue Date: | 2016 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 462 | Issue: | 4 | First Page: | 4451 | Abstract: | Galaxies and their dark matter haloes are part of a complex network of mass structures, collectively called the cosmic web. Using the tidal tensor prescription these structures can be classified into four cosmic environments: voids, sheets, filaments and knots. As the cosmic web may influence the formation and evolution of dark matter haloes and the galaxies they host, we aim to study the effect of these cosmic environments on the average mass of galactic haloes. To this end we measure the galaxy-galaxy lensing profile of 91 195 galaxies, within 0.039 < z < 0.263, from the spectroscopic Galaxy And Mass Assembly survey, using {∼ }100 ° ^2 of overlapping data from the Kilo-Degree Survey. In each of the four cosmic environments we model the contributions from group centrals, satellites and neighbouring groups to the stacked galaxy-galaxy lensing profiles. After correcting the lens samples for differences in the stellar mass distribution, we find no dependence of the average halo mass of central galaxies on their cosmic environment. We do find a significant increase in the average contribution of neighbouring groups to the lensing profile in increasingly dense cosmic environments. We show, however, that the observed effect can be entirely attributed to the galaxy density at much smaller scales (within 4 h<SUP>-1</SUP> Mpc), which is correlated with the density of the cosmic environments. Within our current uncertainties we find no direct dependence of galaxy halo mass on their cosmic environment. | URI: | http://hdl.handle.net/20.500.12386/26240 | URL: | https://academic.oup.com/mnras/article/462/4/4451/2589388 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stw1602 | Bibcode ADS: | 2016MNRAS.462.4451B | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
MNRAS_462_4451–4463_2016).pdf | Pdf editoriale | 8.2 MB | Adobe PDF | View/Open |
Page view(s)
74
checked on Apr 24, 2024
Download(s)
14
checked on Apr 24, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.