Now showing items 1-12 of 12

    • The abundance of ultra-diffuse galaxies from groups to clusters : UDGs are relatively more common in more massive haloes 

      Burg, Remco F. J. van der; Hoekstra, Henk; Muzzin, Adam; Sifon, Cristobal; Viola, Massimo; Bremer, Malcolm N.; Brough, Sarah; Driver, Simon P.; Erben, Thomas; Heymans, Catherine; Hildebrandt, Hendrik; Holwerda, Benne W.; Klaes, Dominik; Kuijken, Konrad; McGee, Sean; Nakajima, Reiko; Napolitano, Nicola; Norberg, Peder; Taylor, Edward N.; Valentijn, Edwin (2017-11) - Journal article
      In recent years, many studies have reported substantial populations of large galaxies with low surface brightness in local galaxy clusters. Various theories that aim to explain the presence of such ultra-diffuse galaxies ...
    • Fossil group origins : VII. Galaxy substructures in fossil systems 

      Zarattini, S.; Girardi, M.; Aguerri, J. A L; Boschin, W.; Barrena, R.; del Burgo, C.; Castro-Rodriguez, N.; Corsini, E. M.; D'Onghia, E.; Kundert, A.; Méndez-Abreu, J.; Sánchez-Janssen, R. (2016-02-01) - Journal article
      Context. Fossil groups (FG) are expected to be the final product of galaxy merging within galaxy groups. In simulations, they are predicted to assemble their mass at high redshift. This early formation allows for the ...
    • Fossil group origins III. The relation between optical and X-ray luminosities 

      Girardi, M.; Aguerri, J. A. L.; De Grandi, S.; D'Onghia, E.; Barrena, R.; Boschin, W.; Mendez Abreu, Jairo; Sanchez-Janssen, R.; Zarattini, S.; Biviano, A.; Castro-Rodriguez, N.; Corsini, E. M.; del Burgo, C.; Iglesias-Paramo, J.; Vilchez, J. M. (2014-05-21) - Journal article
      Aims. This study is part of the Fossil group origins (FOGO) project which aims to carry out a systematic and multiwavelength study of a large sample of fossil systems. Here we focus on the relation between the optical ...
    • Fossil group origins IV. Characterization of the sample and observational properties of fossil systems 

      Zarattini, S.; Barrena, R.; Girardi, M.; Castro-Rodriguez, N.; Boschin, W.; Aguerri, J.A.L.; Mendez Abreu, Jairo; Sánchez-Janssen, R.; Catalán-Torrecilla, C.; Corsini, E.M.; Del Burgo, C.; D'Onghia, E.; Herrera-Ruiz, N.; Iglesias-Páramo, J.; Bailon, E.J.; Muoz, M.L.; Napolitano, N.; Vilchez, J.M. (2014-05-21) - Journal article
      Context. Virialized halos grow by the accretion of smaller ones in the cold dark matter scenario. The rate of accretion depends on the different properties of the host halo. Those halos for which this accretion rate was ...
    • Fossil group origins V. the dependence of the luminosity function on the magnitude gap 

      Zarattini, S.; Aguerri, J.A.L.; Sánchez-Janssen, R.; Barrena, R.; Boschin, W.; Del Burgo, C.; Castro-Rodriguez, N.; Corsini, E.M.; D'Onghia, E.; Girardi, M.; Iglesias-Páramo, J.; Kundert, A.; Mendez Abreu, Jairo; Vilchez, J.M. (2015-09) - Journal article
      Context. In nature we observe galaxy aggregations that span a wide range of magnitude gaps between the two first-ranked galaxies of a system (Δm12). Thus, there are systems with gaps close to zero (e.g., the Coma cluster), ...
    • Galaxy And Mass Assembly (GAMA) : testing galaxy formation models through the most massive galaxies in the Universe 

      Oliva-Altamirano, P.; Brough, S.; Lidman, C.; Couch, W. J.; Hopkins, A. M.; Colless, M.; Taylor, E.; Robotham, A. S. G.; Gunawardhana, M. L. P.; Ponman, T.; Baldry, I.; Bauer, A. E.; Bland-Hawthorn, J.; Cluver, M.; Cameron, E.; Conselice, C. J.; Driver, S.; Edge, A. C.; Graham, A. W.; van Kampen, E.; Lara-Lopez, M. A.; Liske, J.; Lopez-Sanchez, A. R.; Loveday, J.; Mahajan, S.; Peacock, J.; Phillipps, S.; Pimbblet, K. A.; Sharp, R. G. (2014-05-01) - Journal article
      We have analysed the growth of Brightest Group Galaxies and Brightest Cluster Galaxies (BGGs/BCGs) over the last 3 billion years using a large sample of 883 galaxies from the Galaxy And Mass Assembly survey. By comparing ...
    • Galaxy And Mass Assembly (GAMA) : trends in galaxy colours, morphology, and stellar populations with large-scale structure, group, and pair environments 

      Alpaslan, Mehmet; Driver, Simon; Robotham, Aaron S. G.; Obreschkow, Danail; Andrae, Ellen; Cluver, Michelle; Kelvin, Lee S.; Lange, Rebecca; Owers, Matt; Taylor, Edward N.; Andrews, Stephen K.; Bamford, Steven; Bland-Hawthorn, Joss; Brough, Sarah; Brown, Michael J. I.; Colless, Matthew; Davies, Luke J. M.; Eardley, Elizabeth; Grootes, Meiert W.; Hopkins, Andrew M.; Kennedy, Rebecca; Liske, Jochen; Lara-López, Maritza A.; López-Sánchez, Ángel R.; Loveday, Jon; Madore, Barry F.; Mahajan, Smriti; Meyer, Martin; Moffett, Amanda; Norberg, Peder; Penny, Samantha; Pimbblet, Kevin A.; Popescu, Cristina C.; Seibert, Mark; Tuffs, Richard (2015-08-11) - Journal article
      We explore trends in galaxy properties with Mpc-scale structures using catalogues of environment and large-scale structure from the Galaxy And Mass Assembly (GAMA) survey. Existing GAMA catalogues of large-scale structure, ...
    • Generalizing MOND to explain the missing mass in galaxy clusters 

      Hodson, Alistair O.; Zhao, Hongsheng (2017-02-13) - Journal article
      Context. MOdified Newtonian Dynamics (MOND) is a gravitational framework designed to explain the astronomical observations in the Universe without the inclusion of particle dark matter. Modified Newtonian Dynamics, in its ...
    • Herschel-ATLAS/GAMA : how does the far-IR luminosity function depend on galaxy group properties? 

      Guo, Q.; Lacey, C.; Norberg, P.; Cole, S.; Baugh, C.; Frenk, C.; Cooray, A.; Dye, S.; Bourne, N.; Dunne, L.; Eales, S.; Ivison, R.J.; Maddox, S.J.; Alpasan, M.; Baldry, I.; Bland-Hawthorn, J.; Driver, S.P.; Robotham, A. (2014-08-11) - Journal article
      We use the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) Phase I data to study the conditional luminosity function of far-IR (250 μm) selected galaxies in optically selected galaxy groups from the Galaxy And ...
    • MUSE spectroscopy and deep observations of a unique compact JWST target, lensing cluster CLIO 

      Griffiths, Alex; Conselice, Christopher J.; Alpaslan, Mehmet; Frye, Brenda L.; Diego, Jose M.; Zitrin, Adi; Yan, Haojing; Ma, Zhiyuan; Barone-Nugent, Robert; Bhatawdekar, Rachana; Driver, Simon P.; Robotham, Aaron S. G.; Windhorst, Rogier A.; Wyithe, J. Stuart B. (2018-04-11) - Journal article
      We present the results of a VLT MUSE/FORS2 and Spitzer survey of a unique compact lensing cluster CLIO at z = 0.42, discovered through the GAMA survey using spectroscopic redshifts. Compact and massive clusters such as ...
    • The SAMI Galaxy Survey : mass as the driver of the kinematic morphology - density relation in clusters 

      Brough, Sarah; Sande, Jesse van de; Owers, Matt S.; d'Eugenio, Francesco; Sharp, Rob; Cortese, Luca; Scott, Nicholas; Croom, Scott M.; Bassett, Rob; Bekki, Kenji; Bland-Hawthorn, Joss; Bryant, Julia J.; Davies, Roger; Drinkwater, Michael J.; Driver, Simon P.; Foster, Caroline; Goldstein, Gregory; López-Sánchez, Á. R.; Medling, Anne M.; Sweet, Sarah M.; Taranu, Dan S.; Tonini, Chiara; Yi, Sukyoung K.; Goodwin, Michael; Lawrence, J. S.; Richards, Samuel N. (2017-07-21) - Journal article
      We examine the kinematic morphology of early-type galaxies (ETGs) in eight galaxy clusters in the Sydney-AAO Multi-object Integral-field spectrograph Galaxy Survey. The clusters cover a mass range of 14.2log(M200/M☉) <15.2 ...
    • SDSS-IV MaNGA : the spatial distribution of star formation and its dependence on mass, structure and environment 

      Spindler, Ashley; Wake, David; Belfiore, Francesco; Bershady, Matthew; Bundy, Kevin; Drory, Niv; Masters, Karen; Thomas, Daniel; Westfall, Kyle; Wild, Vivienne (2018-05-01) - Journal article
      We study the spatially resolved star formation of 1494 galaxies in the SDSSIV-MaNGA Survey. SFRs are calculated using a two-step process, using Hα in star forming regions and Dn4000 in regions identified as AGN/LI(N)ER or ...