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相关论文: The Mass and Luminosity Functions of Galaxies and …

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The luminosity function of galaxies is derived from a cosmological hydrodynamic simulation of a Lambda cold dark matter (CDM) universe with the aid of a stellar population synthesis model. At z=0, the resulting B band luminosity function…

天体物理学 · 物理学 2009-11-06 Kentaro Nagamine , Masataka Fukugita , Renyue Cen , Jeremiah P. Ostriker

The optical luminosity function is a fundamental characterization of the galaxy population. A combination of earlier redshift surveys with two new surveys allows the first accurate determination of the evolution of the luminosity function…

天体物理学 · 物理学 2007-05-23 Matthew Colless

Using the conditional luminosity function -- the luminosity distribution of galaxies in a dark matter halo as a function of the halo mass -- we present an empirical model to describe the redshift evolution of the rest B-band galaxy…

天体物理学 · 物理学 2009-11-11 Asantha Cooray

There is accumulating evidence that the faint end of the galaxy luminosity function might be very different in different locations. The luminosity function might be sharply rising in rich clusters and flat or declining in regions of low…

天体物理学 · 物理学 2007-05-23 R. Brent Tully

We investigate the physical mechanisms that shape the luminosity function. Beginning with the mass function of dark matter halos, we show how gas cooling, photoionization, feedback, merging and thermal conduction affect the shape of the…

天体物理学 · 物理学 2008-11-26 A. J. Benson , R. G. Bower , C. S. Frenk , C. G. Lacey , C. M. Baugh , S. Cole

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

We derive composite luminosity functions (LF) for galaxies in groups and examine the behaviour of the LF as a function of group luminosity (used as an indicator of group or halo mass). We consider both the entire galaxy population and split…

天体物理学 · 物理学 2009-11-11 Aaron Robotham , Christopher Wallace , Steven Phillipps , Roberto De Propris

We have measured the 3.6 micron luminosity evolution of about 1000 galaxies in 32 clusters at 0.2<z<1.25, without any a priori assumption about luminosity evolution, i.e. in a logically rigorous way. We find that the luminosity of our…

天体物理学 · 物理学 2009-11-11 S. Andreon

We measure the redshift-dependent luminosity function and the comoving radial density of galaxies in the Sloan Digital Sky Survey Data Release 1 (SDSS DR1). Both measurements indicate that the apparent number density of bright galaxies…

天体物理学 · 物理学 2009-11-10 Jon Loveday

Using galaxy groups identified in the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), we compute the luminosity function for several subsamples of galaxies in groups. In all cases, the luminosity functions are well described by…

天体物理学 · 物理学 2008-11-26 Ariel Zandivarez , Hector J. Martinez , Manuel E. Merchan

Using the semi-analytic models based on the Millennium simulation, we trace back the evolution of the luminosity function of galaxies residing in progenitors of groups classified by the magnitude gap at redshift zero. We determine the…

星系天体物理 · 物理学 2014-11-11 G. Gozaliasl , H. G. Khosroshahi , A. A. Dariush , A. Finoguenov , D. M. Z. Jassur , A. Molaeinajad

We study the evolution of two fundamental properties of galaxy clusters: the luminosity function (LF) and the scaling relations between the total galaxy number N (or luminosity) and cluster mass M. Using a sample of 27 clusters (0<z<0.9)…

天体物理学 · 物理学 2010-11-11 Yen-Ting Lin , Joseph J. Mohr , Anthony H. Gonzalez , S. Adam Stanford

Two new luminosity functions of galaxies can be built starting from three and four parameter generalized gamma distributions. In the astrophysical conversion, the number of parameters increases by one, due to the addition of the overall…

宇宙学与河外天体物理 · 物理学 2010-04-28 Lorenzo Zaninetti

Large surveys of the local Universe have shown that galaxies with different intrinsic properties, such as colour, luminosity and morphological type display a range of clustering amplitudes. Galaxies are therefore not faithful tracers of the…

宇宙学与河外天体物理 · 物理学 2015-06-15 C. M. Baugh

The problem of galaxy formation and its dependence on thermodynamic properties is addressed by using Eulerian hydrodynamic numerical simulations of large scale structure formation. Global galaxy properties are explored in simulations…

天体物理学 · 物理学 2009-11-10 J. -M. Alimi , S. Courty

Using semi-analytic modeling techniques, we calculate the luminosity function of galaxy populations residing in cold dark matter halos of different mass. We pay particular attention to the influence of the reionization of the Universe on…

天体物理学 · 物理学 2011-07-18 A. J. Benson , C. S. Frenk , C. M. Baugh , S. Cole , C. G. Lacey

(Summary) Making use of scaling relations between the central and the total galaxy luminosity of a dark matter halo as a function of the halo mass, and the scatter in these relations, we present an empirical model to describe the luminosity…

天体物理学 · 物理学 2009-11-11 Asantha Cooray

We characterize the luminosity functions of galaxies residing in $z\sim0$ groups and clusters over the broadest ranges of luminosity and mass reachable by the Sloan Digital Sky Survey. Our measurements cover four orders of magnitude in…

星系天体物理 · 物理学 2016-05-27 Ting-Wen Lan , Brice Ménard , Houjun Mo

The cluster and field luminosity functions (LFs) determined on large homogeneous samples (N>2200 galaxies each) are almost indistinguishable, down to M^*+4 in the r and i filters, hence suggesting that the effect of the cluster environment…

天体物理学 · 物理学 2009-11-10 S. Andreon

Luminosity function of cluster galaxies provides a fundamental constraint on galaxy evolution in cluster environments. By using the bright member galaxies of a large sample of rich clusters identified from Sloan Digital Sky Survey, we…

星系天体物理 · 物理学 2015-06-23 Z. L. Wen , J. L. Han
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