Browsing by Subject "Galaxies -- Evolution"

Browsing by Subject "Galaxies -- Evolution"

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  • Kajino, Hiroki; Ohta, Kouji; Iwata, Ikuru; Yabe, Kiyoto; Yuma, Suraphong; Akiyama, Masayuki; Tamura, Naoyuki; Aoki, Kentaro; Sawicki, Marcin, 1969- (American Astronomical Society, 2009-10-10)
    We present results of optical spectroscopic observations of candidates of Lyman break galaxies (LBGs) at z ∼ 5 in the region, including the GOODS-N and the J0053+1234 regions by using Gemini Multi-Object Spectrograph North ...

  • Brook, C. B.; Stinson, G.; Gibson, Brad K.; Shen, S.; Maccio, A. V.; Obreja, A.; Wadsley, J.; Quinn, T. (Oxford University Press, 2014-10-01)
    Using cosmological galaxy formation simulations from the MaGICC (Making Galaxies in a Cosmological Context) project, spanning stellar mass from ∼107 to 3 × 1010 M, we trace the ...

  • Stinson, G. S.; Brook, C.; Prochaska, J. Xavier; Hennawi, Joe; Shen, Sijing; Wadsley, J.; Pontzen, Andrew; Couchman, H. M. P.; Quinn, T.; Maccio, Andrea V.; Gibson, Brad K. (Wiley-Blackwell, 2012-09)
    We explore the circumgalactic medium (CGM) of two simulated star-forming galaxies with luminosities L ≈ 0.1 and 1 L generated using the smooth particle hydrodynamic code GASOLINE. These simulations are ...

  • Obreja, A.; Brook, C. B.; Stinson, G.; Dominguez-Tenreiro, R.; Gibson, Brad K.; Silva, L.; Granato, G. L. (Oxford University Press, 2014-08-01)
    Using cosmological galaxy simulations from the MaGICC project, we study the evolution of the stellar masses, star formation rates and gas-phase abundances of star-forming galaxies. We derive the stellar masses and star ...

  • Arcila-Osejo, Liz Maria (Halifax, N.S. : Saint Mary's University, 2018)
    We build a K-selected catalog of z ∼ 1.6 gzKs galaxies in the Deep and Wide fields of the Canada-France-Hawaii Legacy Survey, with a final effective area of 27.6 deg2. This catalog allows us to recover ...

  • Pilkington, K.; Few, C. G.; Gibson, Brad K.; Calura, F.; Michel-Dansac, L.; Thacker, Robert John, 1970-; Molla, M.; Matteucci, F.; Rahimi, A.; Kawata, D. (EDP Sciences, 2012-04)
    Aims. We examine radial and vertical metallicity gradients using a suite of disk galaxy hydrodynamical simulations, supplemented with two classic chemical evolution approaches. We determine the rate of change of gradient ...

  • Sorba, Robert; Sawicki, Marcin, 1969- (Oxford University PressRoyal Astronomical Society, 2015)
    We fit model spectral energy distributions (SEDs) to each pixel in 67 nearby ( = 0.0057) galaxies using broad-band photometry from the Sloan Digital Sky Survey and GALEX. For each galaxy, we compare the stellar mass ...

  • Sawicki, Marcin, 1969-; Henry, Alaina L.; Martin, Crystal L.; Dressler, Alan; McCarthy, Patrick (American Astronomical SocietyIOP Publishing, 2010-08-10)
    We present NICMOS J[subscript 110] (rest-frame 1200–2100 [Angstrom]) observations of the three z = 5.7 Ly[alpha] emitters discovered in the blind multislit spectroscopic survey by Martin et al. These images confirm the ...

  • Cui, Weiguang; Power, Chris; Knebe, Alexander; Kay, Scott T.; Sembolini, Federico; Elahi, Pascal J.; Yepes, Gustavo; Pearce, Frazer; Cunnama, Daniel; Beck, Alexander M.; Thacker, Robert John, 1970- (Oxford University Press, 2016-06-01)
    Building on the initial results of the nIFTy simulated galaxy cluster comparison, we compare and contrast the impact of baryonic physics with a single massive galaxy cluster, run with 11 state-of-the-art codes, spanning ...

  • Arcila-Osejo, Liz; Sawicki, Marcin, 1969- (Royal Astronomical SocietyOxford University Press, 2013-08-19)
    We use an adaptation of the BzK[subscript s] technique to select ∼40 000 z ∼ 2 galaxies (to K[subscript AB] = 24), including ∼5000 passively evolving (PE) objects (to K[subscript AB] = 23), from 2.5 deg[superscript 2] of ...

  • Williamson, David John (Halifax, N.S. : Saint Mary's University, 2013 [i.e. 2012]., 2012)
    This thesis examines the formation and evolution of cold gaseous structures in galaxies and galactic outflows in two distinct scenarios. Previous analytic estimates of the viscous time-scale due to cloud-cloud collisions ...

  • Beanlands, Jennifer K. (Halifax, N.S. : Saint Mary's University, 2015)
    Emissions from high redshift (i.e. z ~ 2.5), star forming galaxies provide a unique window into the state the universe at earlier epochs, and how these galaxies evolve over time. Accurate studies of these galaxies, however, ...

  • Few, C. G.; Gibson, Brad K.; Courty, S.; Michel-Dansac, L.; Brook, C. B.; Stinson, G. S. (EDP Sciences, 2012-11)
    Aims. We test the validity of comparing simulated field disk galaxies with the empirical properties of systems situated within environments more comparable to loose groups, including the Milky Way’s Local Group. Methods. ...

  • Gibson, Brad K.; Few, C. G.; Courty, S.; Kawata, D.; Calura, F.; Teyssier, R. (Oxford University Press on behalf of the Royal Astronomical Society, 2012-07)
    We present a new chemodynamical code – RAMSES-CH – for use in simulating the self-consistent evolution of chemical and hydrodynamical properties of galaxies within a fully cosmological framework. We build upon the adaptive ...

  • Walker, A. P.; Gibson, Brad K.; Pilkington, K.; Brook, C. B.; Dutta, P.; Stanimirovic, S.; Stinson, G. S.; Bailin, J. (Oxford University Press, 2014-06)
    We present an analysis of the role of feedback in shaping the neutral hydrogen (H I) content of simulated disc galaxies. For our analysis, we have used two realizations of two separate Milky Way-like (∼L★) discs – ...

  • Lemaux, B. C.; Lubin, L. M.; Sawicki, Marcin, 1969-; Martin, C.; Lagattuta, D. J.; Gal, R. R.; Kocevski, D.; Fassnacht, C. D.; Squires, G. K. (American Astronomical SocietyIOP Publishing, 2009-07-20)
    We present results of a spectroscopic search for Ly[alpha] emitters (LAEs) in the Cl1604 supercluster field using the extensive spectroscopic Keck/DEep Imaging Multi-Object Spectrograph database taken as part of the ...

  • Sawicki, Marcin, 1969-; Gilbank, David G.; Bower, Richard G.; Glazebrook, Karl; Balogh, Michael L.; Baldry, I. K.; Davies, G. T.; Hau, G. K. T.; Li, I. H.; McCarthy, P. (Royal Astronomical SocietyOxford University Press, 2011-06)
    We present measurements of the specific star formation rate (SSFR)–stellar mass relation for star-forming galaxies. Our deep spectroscopic samples are based on the Redshift One LDSS3 Emission line Survey (ROLES) and European ...

  • Arcila-Osejo, Liz María (Halifax, N.S. : Saint Mary's University, 2011)
    In this work we use the latest results from the four Deep Fields of the Canada France Hawaii Telescope Legacy Survey (CFHTLS) combined with the WIRCam Deep Survey (WIRDs) covering 2 .51 deg [superscript 2] to study the ...

  • Gibson, Brad K.; Calura, F.; Michel-Dansac, L.; Stinson, G. S.; Dotter, A.; Pilkington, K.; House, E. L.; Brook, C. B.; Few, C. G.; Cignoni, M. (Royal Astronomical Society, 2012-12)
    By means of high-resolution cosmological hydrodynamical simulations of Milky Way (MW) like disc galaxies, we conduct an analysis of the associated stellar metallicity distribution functions (MDFs). After undertaking a ...

  • Yuma, Suraphong; Ohta, Kouji; Yabe, Kiyoto; Shimasaku, Kazuhiro; Yoshida, Makiko; Ouchi, Masami; Iwata, Ikuru; Sawicki, Marcin, 1969- (American Astronomical SocietyIOP Publishing, 2010-09-10)
    We present a study of a stellar population of Ly[alpha] emitters (LAEs) at z = 4.86 in the Great Observatories Origins Deep Survey North (GOODS-N) field and its flanking field. The LAEs are selected based on optical ...