Results 41 to 50 of about 29,686 (260)

Velocity Dispersions of Brightest Cluster Galaxies and Their Host Clusters [PDF]

The Astrophysical Journal, 2020
Abstract We explore connections between brightest cluster galaxies (BCGs) and their host clusters. We first construct a HeCS-omnibus cluster sample including 227 galaxy clusters within 0.02 < z < 0.30; the total number of spectroscopic members from MMT/Hectospec and SDSS observations is 52325.
Antonaldo Diaferio, Antonaldo Diaferio, Jubee Sohn, Margaret J. Geller, Kenneth J. Rines   +4 more
openaire   +4 more sources

Early assembly of the most massive galaxies [PDF]

, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins, John P. Stott, Matt Hilton, Scott T. Kay, S. Adam Stanford, Michael Davidson, Mark Hosmer, Ben Hoyle, Andrew Liddle, Ed Lloyd-Davies, Robert G. Mann, Nicola Mehrtens, Christopher J. Miller, Robert C. Nichol, A. Kathy Romer, Martin Sahlén, Pedro T. P. Viana, Michael J. West, V Springel, M Kampakoglou, PG van Dokkum, G De Lucia, RG Bower, A Vale, A Sandage, TR Lauer, CA Collins, DJ Burke, MN Bremer, SA Stanford, P Rosati, R Demarco, CR Mullis, AK Romer, M Hilton, JP Stott, IM Whiley, T Yamada, OJ Eggen, RB Larson, J Binney, A Dekel, DA Wake, C Almeida, Y-T Lin, G Bruzual, G Chabrier   +46 more
core   +1 more source

The shapes of brightest cluster galaxies

The Astrophysical Journal, 1993
The mean isophotal axis ratios are computed for a complete sample of 119 brightest cluster galaxies (BCGs) in Abell clusters. The cumulative distribution function F(q) of axis ratios for the BCGs differs from F(q) for a sample of ordinary elliptical galaxies at only the P=0.14 probability level, as measured by a Kolmogorov Smirnov test.
Tod R. Lauer, Marc Postman, Barbara S. Ryden   +2 more
openaire   +2 more sources

The Look-back Time Evolution of Far-Ultraviolet Flux from the Brightest Cluster Elliptical Galaxies at z < 0.2 [PDF]

, 2007
We present the GALEX UV photometry of the elliptical galaxies in Abell clusters at moderate redshifts (z < 0.2) for the study of the look-back time evolution of the UV upturn phenomenon. The brightest elliptical galaxies (M_r < -22) in 12 remote clusters
Alessandro Boselli, Alex S. Szalay, Barry F. Madore, Barry Y. Welsh, Bower R. G., Brown D., Bruno Milliard, Chang H. Ree, D. Christopher Martin, David Schiminovich, Deharveng J.-M., Donas J., Faber S. M., Gil de Paz A., Greggio L., Han Z., Jaehyon Rhee, Jean‐Michel Deharveng, Jonghwan Rhee, Jose Donas, Karl Forster, Kauffmann G., Kevin Schawinski, Kodama T., Luciana Bianchi, Mark Seibert, Moehler S., O'Connell R. W., Patrick Morrissey, Peter G. Friedman, R. Michael Rich, Sarzi M., Schawinski K., Soo‐Chang Rey, Sugata Kaviraj, Sukyoung K. Yi, Suk‐Jin Yoon, Susan G. Neff, Tantalo R., Ted K. Wyder, Timothy M. Heckman, Todd Small, Tom A. Barlow, Young‐Jong Sohn, Young‐Wook Lee, Yun‐Kyeong Sheen   +45 more
core   +4 more sources

Stellar populations in brightest cluster galaxies [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractWe present the results of an investigation of a large sample of brightest cluster galaxies (BCGs), their kinematic and stellar population properties and the relationships between these and the properties of the host clusters. We have obtained high signal-to-noise, long-slit spectra of 49 BCGs in the nearby Universe with the Gemini and WHT ...
Loubser, S, Sanchez-Blazquez, P, Soechting, I, Sansom, A   +3 more
openaire   +1 more source

MORPHOLOGICAL TYPES OF 254 RICH PF GALAXY CLUSTERS

Odessa Astronomical Publications, 2014
We determined the morphological types for 254 rich galaxy clusters from the PF Catalogue of Galaxy Clusters and Groups. The data set contains the PF galaxy clusters, which have no ACO coinciding ones.
E. A. Panko, S. M. Andrievsky, A. V. Gotsulyak   +2 more
doaj   +1 more source

Detailed Shapes of the Line-of-sight Velocity Distributions in Massive Early-type Galaxies from Nonparametric Spectral Models

The Astrophysical Journal, 2023
We present the first systematic study of the detailed shapes of the line-of-sight velocity distributions (LOSVDs) in nine massive early-type galaxies (ETGs) using the novel nonparametric modeling code WINGFIT.
Kianusch Mehrgan, Jens Thomas, Roberto Saglia, Taniya Parikh, Ralf Bender   +4 more
doaj   +1 more source

THE EVOLUTION OF BRIGHTEST CLUSTER GALAXIES IN A HIERARCHICAL UNIVERSE [PDF]

The Astrophysical Journal, 2012
We investigate the evolution of Brightest Cluster Galaxies (BCGs) from redshift z~1.6 to z~0. We use the semi-analytic model of Croton et al. (2006) with a new spectro-photometric model based on the Maraston (2005) stellar populations and a new recipe for the dust extinction. We compare the model predictions of the K-band luminosity evolution and the J-
Tonini, Chiara, Bernyk, Maksym, Croton, Darren, Maraston, Claudia, Thomas, Daniel   +4 more
openaire   +5 more sources

Comparing Globular Cluster System Properties with Host Galaxy Environment

The Astrophysical Journal, 2023
We present Hubble Space Telescope photometry in the optical (F475X) and near-infrared (F110W) bands of the globular cluster (GC) systems of the inner halos of a sample of 15 massive elliptical galaxies.
Kate Hartman, William E. Harris, John P. Blakeslee, Chung-Pei Ma, Jenny E. Greene   +4 more
doaj   +1 more source

On the Origin and Evolution of the Intra-Cluster Light: A Brief Review of the Most Recent Developments

Galaxies, 2021
Not all the light in galaxy groups and clusters comes from stars that are bound to galaxies. A significant fraction of it constitutes the so-called intracluster or diffuse light (ICL), a low surface brightness component of groups/clusters generally found
Emanuele Contini
doaj   +1 more source