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We derive NUV luminosity functions for 6471 NUV detected galaxies in 28 $0.02 < z < 0.08$ clusters and consider their dependence on cluster properties. We consider optically red and blue galaxies and explore how their NUV LFs vary in…

Astrophysics of Galaxies · Physics 2018-11-07 Roberto De Propris , Malcolm Bremer , Steven Phillipps

The line-of-sight velocity dispersion profile of galaxy clusters exhibits a "kink" corresponding to the spatial extent of orbiting galaxies. Because the spatial extent of a cluster is correlated with the amplitude of the velocity dispersion…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-21 Erika L. Wagoner , Eduardo Rozo , Han Aung , Daisuke Nagai

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…

Astrophysics · Physics 2009-11-13 R. E. Gonzalez , N. D. Padilla , G. Galaz , L. Infante

We present {\it Hubble Space Telescope} {\it V,I} photometry of the central region of the LMC cluster NGC 1866, reaching magnitudes as faint as V=27 mag. We find evidence that the cluster luminosity function shows a strong dependence on the…

Astrophysics · Physics 2009-11-07 E. Brocato , V. Castellani , E. Di Carlo , G. Raimondo , A. R. Walker

An infrared survey of the central 650 arcmin$^2$ of the Coma cluster is used to determine the $H$ band luminosity function for the cluster. Redshifts are available for all galaxies in the survey with $H < 14.5$, and for this sample we…

Astrophysics · Physics 2009-10-30 Roberto De Propris , Peter R. Eisenhardt , Adam Stanford , Mark Dickinson

From a rediscussion of Local Group membership, and of distances to individual galaxies, we obtain $M_V$ values for 35 probable and possible Local Group members. The luminosity function of these objects is well fitted by a Schechter function…

Astrophysics · Physics 2009-10-31 C. J. Pritchet , S. van den Bergh

Despite the great potential of the U-band galaxy luminosity function (GLF) to constrain the history of star formation in clusters, to clarify the question of variations of the GLF across filter bands, to provide a baseline for comparisons…

Astrophysics · Physics 2009-11-10 Daniel Christlein , Daniel H. McIntosh , Ann I. Zabludoff

We measure the central stellar velocity dispersion function for quiescent galaxies in a set of nine northern clusters in the redshift range $0.18 < z < 0.29$ and with strong lensing arcs in Hubble Space Telescope images. The velocity…

Astrophysics of Galaxies · Physics 2020-10-14 Jubee Sohn , Daniel G. Fabricant , Margaret J. Geller , Ho Seong Hwang , Antonaldo Diaferio

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…

Astrophysics · Physics 2009-11-10 Paola Popesso , Hans Boehringer , Martino Romaniello , Wolfgang Voges

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…

Astrophysics · Physics 2009-11-13 Daniel Harsono , Roberto De Propris

The dynamical evolution of the globular cluster systems in galaxies is predicted, based on the standard dynamical theory normalized to the example of the Milky Way. The major processes varying with the galactocentric distance are the tidal…

Astrophysics · Physics 2009-10-28 Jeremiah P. Ostriker , Oleg Y. Gnedin

The absolute magnitude M* of the peak of the globular cluster luminosity function (GCLF), approximated by a Gaussian, can be calibrated independently in the Galaxy and M 31 through RR Lyr stars and Cepheids, respectively. They yield, in…

Astrophysics · Physics 2007-05-23 G. A. Tammann , A. Sandage

This paper concerns the K band Hubble diagram for the brightest cluster galaxies (BCGs) in a sample of X-ray clusters covering the redshift range $0.05<z<0.8$. We show that BCGs in clusters of high X-ray luminosity are excellent standard…

Astrophysics · Physics 2009-10-30 Chris Collins , Bob Mann

The luminosities of globular clusters are found to correlate with their half-light radii. The most luminous clusters have half-light radii r ~ 3 pc. Mean cluster luminosities are < Mv > = -6.64 +/- 0.26 for r < 2.0, < Mv > = -7.44 +/- 0.20…

Astrophysics · Physics 2009-10-28 Sidney van den Bergh

The distributions of peculiar velocities of rich clusters and of groups of galaxies are investigated for different cosmological models and are compared with observations. Four cosmological models are studied: standard ($\Omega=1$) CDM,…

Astrophysics · Physics 2009-10-22 Neta A. Bahcall , Mirt Gramann , Renyue Cen

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…

Astrophysics of Galaxies · Physics 2015-06-23 Z. L. Wen , J. L. Han

We present the results of a search for galaxy clusters in the first 36 XMM-Newton pointings on the COSMOS field. We reach a depth for a total cluster flux in the 0.5-2 keV band of 3x10-15 ergs cm-2 s-1, having one of the widest XMM-Newton…

Clusters of galaxies in most previous catalogs have redshifts z<0.3. Using the photometric redshifts of galaxies from the Sloan Digital Sky Survey Data Release 6 (SDSS DR6), we identify 39,668 clusters in the redshift range 0.05< z <0.6…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Z. L. Wen , J. L. Han , F. S. Liu

We measure the rest-frame B-band luminosity function of red-sequence galaxies (RSLF) of five intermediate-redshift (0.5 < z < 0.9), high-mass (sigma > 950 km/s) clusters. Cluster galaxies are identified through photometric redshifts based…

Astrophysics · Physics 2008-12-18 S. M. Crawford , M. A Bershady , J. G. Hoessel

We study the luminosity gap, dm12, between the first and second ranked galaxies in a sample of 59 massive galaxy clusters, using data from the Hale Telescope, HST, Chandra, and Spitzer. We find that the dm12 distribution, p(dm12), is a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Graham P. Smith , Habib G. Khosroshahi , A. Dariush , A. J. R. Sanderson , T. J. Ponman , J. P. Stott , C. P. Haines , E. Egami , D. P. Stark