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We measure the build-up of the stellar mass of galaxies from z=6 to z=1. Using 15 band multicolour imaging data in the NICMOS Ultra Deep Field we derive photometric redshifts and masses for 796 galaxies down to H_AB=26.5. The derived…

天体物理学 · 物理学 2007-05-23 Stephen Gwyn , F. D. A. Hartwick , Anudeep Kanwar , David Schade , Luc Simard

Galaxies are not uniformly distributed in space. On large scales the Universe displays coherent structure, with galaxies residing in groups and clusters on scales of ~1-3 Mpc/h, which lie at the intersections of long filaments of galaxies…

宇宙学与河外天体物理 · 物理学 2015-06-04 Alison L. Coil

The current evidence for morphologically peculiar galaxy populations at high-redshifts is outlined. After describing various techniques which can be used to quantify the importance of ``morphological K-corrections'', and to objectively…

天体物理学 · 物理学 2007-05-23 R. G. Abraham

We have measured the 3.6 micron luminosity and mass evolution of about 1000 galaxies in 32 clusters at 0.2<z<1.25 with a special attention to methodological issues, as emphasized in this proceeding contribution. We find that the luminosity…

天体物理学 · 物理学 2007-05-23 S. Andreon

Grids of stellar models are useful tools to derive the properties of stellar clusters, in particular young clusters hosting massive stars, and to provide information on the star formation process in various mass ranges. Because of their…

太阳与恒星天体物理 · 物理学 2019-05-01 L. Haemmerlé , P. Eggenberger , S. Ekström , C. Georgy , G. Meynet , A. Postel , M. Audard , M. Sørensen , T. Fragos

Globular cluster (GC) systems around galaxies of a vast mass range show remarkably simple scaling relations. The combined mass of all GCs is a constant fraction of the total galaxy mass and the mean metallicity and metallicity dispersion of…

星系天体物理 · 物理学 2018-08-24 Nick Choksi , Oleg Gnedin , Hui Li

We combine star formation along the `main sequence', quiescence, and clustering and merging to produce an empirical model for the evolution of individual galaxies. Main sequence star formation alone would significantly steepen the stellar…

星系天体物理 · 物理学 2017-03-03 Charles L. Steinhardt , Dominic Yurk , Peter Capak

We study the environmental dependence of stellar population properties at z ~ 1.3. We derive galaxy properties (stellar masses, ages and star formation histories) for samples of massive, red, passive early-type galaxies in two high-redshift…

We use simple analytic reasoning to identify physical processes that drive the evolution of the cosmic star formation density in cold dark matter universes. Based on our analysis, we formulate a model to characterise the redshift dependence…

天体物理学 · 物理学 2009-07-09 Lars Hernquist , Volker Springel

The existence of massive galaxies with strongly suppressed star formation at z~2.3, identified in a previous paper, suggests that a red sequence may already be in place beyond z=2. In order to test this hypothesis, we study the rest-frame…

Within the Local Universe galaxies can be studied in great detail star by star, and here we review the results of quantitative studies in nearby dwarf galaxies. The Color-Magnitude Diagram synthesis method is well established as the most…

宇宙学与河外天体物理 · 物理学 2010-01-15 E. Tolstoy , V. Hill , M. Tosi

We use the UKIDSS Ultra-Deep Survey, the deepest degree-scale near-infrared survey to date, to investigate the clustering of star-forming and passive galaxies to z ~ 3.5. Our new measurements include the first determination of the…

I discuss recent theoretical work on the formation and evolution of galaxies paying particular attention to the ability of current models to make detailed comparisons with observations of the galaxy population both nearby and at high…

天体物理学 · 物理学 2007-05-23 Simon D. M. White

We analyze the angular clustering of z~2.3 distant red galaxies (DRGs) measured by Quadri et al 2008. We find that, with robust estimates of the measurement errors and realistic halo occupation distribution modeling, the measured clustering…

宇宙学与河外天体物理 · 物理学 2010-01-06 Jeremy L. Tinker , Risa H. Wechsler , Zheng Zheng

The Gemini Deep Deep Survey, GDDS, produced several significant results relating to the evolution of galaxies. All of these results are consistent with the "downsizing" concept of galaxy formation and evolution, i.e., that the active…

天体物理学 · 物理学 2016-08-30 David Crampton , the GDDS Team

Connecting galaxies with their descendants (or progenitors) at different redshifts can yield strong constraints on galaxy evolution. Observational studies have historically selected samples of galaxies using a physical quantity, such as…

星系天体物理 · 物理学 2015-05-20 Carl J. Mundy , Christopher J. Conselice , Jamie R. Ownsworth

We introduce a toy model that describes (in a single equation) the mass in stars as a function of halo mass and redshift. Our model includes the suppression of gas accretion from gravitational shock heating and AGN jets mainly for M_halo >…

宇宙学与河外天体物理 · 物理学 2012-02-21 A. Cattaneo , G. A. Mamon , K. Warnick , A. Knebe

The two major functions in galaxy evolution that we would like to measure are the stellar populations in galaxies, and their time-derivative, the star formation rate. Especially at redshifts above 1, both of these measures are benefiting…

天体物理学 · 物理学 2007-05-23 Matthew Malkan

There are three major axes to describe the evolution of galaxies, namely, time (redshift), space (environment) and mass (stellar mass). In this article, one topic each will be presented along these axes. (1) Based on the Subaru wide-field…

天体物理学 · 物理学 2007-05-23 Tadayuki Kodama , Richard Bower , Philip Best , Patrick Hall , Toru Yamada , Masayuki Tanaka

We investigate the effect of dry merging on the color-magnitude relation (CMR) of galaxies and find that the amount of merging predicted by a hierarchical model results in a red sequence that compares well with the observed low-redshift…

宇宙学与河外天体物理 · 物理学 2011-02-11 Rosalind E. Skelton , Eric F. Bell , Rachel S. Somerville