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相关论文: The galaxy luminosity function in groups and clust…

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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 empirical relations between the central galaxy luminosity and the halo mass, and between the total galaxy luminosity in a halo and the halo mass, we construct the galaxy luminosity function (LF). To the luminosity of the central…

天体物理学 · 物理学 2009-11-11 Asantha Cooray , Milos Milosavljevic

We present deep composite luminosity functions in $B$, $g$, $V$, $r$, $i$ and $z$ for six clusters at $0.14 < z < 0.40$ observed with the Hubble Space Telescope Advanced Camera for Surveys. The luminosity functions reach to absolute…

天体物理学 · 物理学 2009-11-13 Daniel Harsono , Roberto De Propris

(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

Several statistics are applied to groups and galaxies in groups in the Two degree Field Galaxy Redshift Survey. Firstly we estimate the luminosity functions for different subsets of galaxies in groups. The results are well fitted by a…

天体物理学 · 物理学 2009-11-07 H. J. Martinez , A. Zandivarez , M. E. Merchan , M. J. L. Dominguez

Redshift surveys like the Sloan Digital Sky Survey (SDSS) have given a very precise measurement of the galaxy luminosity function down to about M_R = -17 (~ M_B = -16). Fainter absolute magnitudes cannot be probed because of the flux limit…

天体物理学 · 物理学 2009-11-10 Neil Trentham , Leda Sampson , Manda Banerji

We compute the galaxy luminosity function in spectroscopically selected nearby groups and clusters. Our sample comprises 728 systems extracted from the third release of the Sloan Digital Sky Survey in the redshift range $0.03 < z < 0.06$…

天体物理学 · 物理学 2009-11-11 R. E. Gonzalez , M. Lares , D. G. Lambas , C. Valotto

We study the luminosity function of galaxies in Hickson groups using our recent redshift survey of galaxies in and around 17 of these groups. We find that the galaxies in these regions have a luminosity function with M* = -19.5 + 5 log h,…

天体物理学 · 物理学 2007-05-23 Stephen E. Zepf , Reinaldo R. de Carvalho , Andre L. B. Ribeiro

Using a large galaxy group catalogue constructed from the Sloan Digital Sky Survey Data Release 4 (SDSS DR4) with an adaptive halo-based group finder, we investigate the luminosity and stellar mass functions for different populations of…

天体物理学 · 物理学 2014-11-18 Xiaohu Yang , H. J. Mo , Frank C. van den Bosch

We present the analysis of the luminosity function of a large sample of galaxy clusters from the Northern Sky Optical Cluster Survey, using latest data from the Sloan Digital Sky Survey. Our global luminosity function (down to M_r<= -16)…

宇宙学与河外天体物理 · 物理学 2015-05-27 E. De Filippis , M. Paolillo , G. Longo , F. La Barbera , R. R. de Carvalho , R. Gal

We present deep two-colour photometry of two rich clusters at z=0.18, A665 and A1689. We use these data to construct number counts as a function of magnitude in the two fields. By combining these counts with similar observations from a…

天体物理学 · 物理学 2015-06-24 Gillian Wilson , Ian Smail , Richard S. Ellis , Warrick J. Couch

We use the most recent data release (DR9) of the DESI legacy imaging survey and SDSS galaxy groups to measure the conditional luminosity function (CLF) for groups with halo mass $M_{\rm h}\ge 10^{12}M_{\odot}$ and redshift $0.01\le z\le…

星系天体物理 · 物理学 2023-02-16 Jiacheng Meng , Cheng Li , Houjun Mo , Yangyao Chen , Zhen Jiang , Lizhi Xie

We compute the luminosity function of galaxies in groups. The data consists in two samples of groups of galaxies selected in distance and redshift space comprising a total number of 66 groups. The assignment of galaxies to the groups were…

天体物理学 · 物理学 2009-10-30 Hernán Muriel , Carlos A. Valotto , Diego G. Lambas

The morphological dependence of the luminosity function is studied using a sample containing approximately 1500 bright galaxies classified into Hubble types by visual inspections for a homogeneous sample obtained from the Sloan Digital Sky…

We study the luminosity and color dependence of the galaxy 2-point correlation function in the Sloan Digital Sky Survey, starting from a sample of 200,000 galaxies over 2500 deg^2. We concentrate on the projected correlation function…

We examine a sample of low redshift (10 < d < 150 Mpc) galaxies including galaxies with r-band absolute magnitudes as faint as -12.5 (for h=1), selected from the Sloan Digital Sky Survey Data Release 2 (SDSS). The sample is unique in…

We present a study on the variations of the luminosity function of galaxies around clusters in a numerical simulation with semi-analytic galaxies, attempting to detect these variations in the 2dF Galaxy Redshift Survey. We subdivide the…

天体物理学 · 物理学 2009-11-13 R. E. Gonzalez , N. D. Padilla , G. Galaz , L. Infante

We constructed the composite luminosity function (LF) of clusters of galaxies in the five SDSS photometric bands u,g,r,i and z from the RASS-SDSS galaxy cluster catalog. Background and foreground galaxies are subtracted using both a local…

天体物理学 · 物理学 2009-11-10 Paola Popesso , Hans Boehringer , Martino Romaniello , Wolfgang Voges

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

We present the Shapley Optical Survey, a photometric study covering a 2 deg^2 region of the Shapley Supercluster core at z ~ 0.05 in two bands (B and R). The galaxy sample is complete to B=22.5 (>M^*+6, N_{gal}=16588), and R=22.0 (>M^*+7,…

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