Results 141 to 150 of about 12,741,185 (402)

The Luminosity Function in Groups of Galaxies [PDF]

EAS Publications Series, 2011
4 pages, 4 figures.
openaire   +3 more sources

Galaxy groups in the 2dF Galaxy Redshift Survey: a compactness analysis of groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
A comprehensive study on compactness has been carried out on the 2dF Galaxy Group Catalogue constructed by Merch n & Zandivarez. The compactness indexes defined in this work take into account different geometrical constraints in order to explore a wide range of possibilities.
C. J. Ragone, Héctor J. Martínez, Mariano Dominguez, Hernán Muriel, Ariel Zandivarez   +4 more
openaire   +4 more sources

Galaxy and Mass Assembly (GAMA): the GAMA galaxy group catalogue (G3Cv1) [PDF]

, 2011
Using the complete Galaxy and Mass Assembly I (GAMA-I) survey covering ∼142 deg2 to rAB= 19.4, of which ∼47 deg2 is to rAB= 19.8, we create the GAMA-I galaxy group catalogue (G3Cv1), generated using a friends-of-friends (FoF) based grouping algorithm ...
A. Robotham, P. Norberg, S. Driver, S. Driver, I. Baldry, S. Bamford, A. Hopkins, J. Liske, J. Loveday, A. Merson, J. Peacock, S. Brough, E. Cameron, C. Conselice, S. Croom, C. Frenk, M. Gunawardhana, D. Hill, D. Jones, L. Kelvin, K. Kuijken, R. Nichol, H. Parkinson, K. Pimbblet, S. Phillipps, C. Popescu, M. Prescott, R. Sharp, W. Sutherland, E. Taylor, D. Thomas, R. Tuffs, E. V. Kampen, D. Wijesinghe   +33 more
semanticscholar   +1 more source

Usage of the term provenance in LIS literature: An Annual Review of Information Science and Technology (ARIST) paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Provenance is the story of how something has come to be. In this paper, we provide a systematic literature review to categorize the various notions of provenance in Information Sciences. The goal of this review is to paint a broader picture of the multiple uses of provenance at play and to enhance our understanding of the importance of ...
Rhiannon Bettivia, Yi‐Yun Cheng, Michael R. Gryk   +2 more
wiley   +1 more source

The DEEP2 galaxy redshift survey: the evolution of the blue fraction in groups and the field [PDF]

, 2007
We explore the behavior of the blue galaxy fraction over the redshift range 0.75
Coil, Alison L., Cooper, Michael C., Croton, Darren J., Davis, Marc, Faber, S. M., Gerke, Brian F., Guhathakurta, Puragra, Koo, David C., Newman, Jeffrey A., Weiner, Benjamin J., Willmer, Christopher N. A., Yan, Renbin   +11 more
core   +1 more source

Supernovae in isolated galaxies, in pairs and in groups of galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
In order to investigate the influence of the environment on the supernova (SN) production we have performed a statistical investigation of the SNe discovered in isolated galaxies, in pairs and in groups of galaxies. 22 SNe in 18 isolated galaxies, 48 SNe in 40 galaxies members of 37 pairs and 211 SNe in 170 galaxies members of 116 groups have been ...
A. R. Petrosian, H. Navasardian, Enrico Cappellaro, Massimo Turatto, J. Boulesteix   +4 more
openaire   +4 more sources

Alignments of galaxy group shapes with large-scale structure [PDF]

, 2011
In this paper we analyse the alignment of galaxy groups with the surrounding large scale structure traced by spectroscopic galaxies from the Sloan Digital Sky Survey Data Release 7.
D. Paz, M. Sgr'o, M. Merch'an, N. Padilla   +3 more
semanticscholar   +1 more source

JWST Imaging of the Closest Globular Clusters—VI. The Lowest‐Mass Objects in M 4 and the Galactic Bulge

Astronomische Nachrichten, EarlyView.
ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin, R. Gerasimov, A. Calamida, M. Libralato, M. Scalco, D. Nardiello, M. Griggio, D. Apai, J. Anderson, A. Bellini, A. Burgasser   +10 more
wiley   +1 more source

A multi-wavelength study of the gravitational lens COSMOS J095930+023427

, 2012
We present a multi-wavelength study of the gravitational lens COSMOS J095930+023427 (z=0.89), together with the associated galaxy group located at $z\sim0.7$ along the line of sight and the lensed background galaxy.
Cao, Shuo, Covone, Giovanni, Paolillo, Maurizio, Zhu, Zong-Hong   +3 more
core   +1 more source

Weak lensing observations of the "dark" cluster MG2016+112 [PDF]

, 2000
We investigate the possible existence of a high-redshift (z=1) cluster of galaxies associated with the QSO lens system MG2016+112. From an ultra-deep R- and less deep V- and I-band Keck images and a K-band mosaic from UKIRT, we detect ten galaxies with ...
Benitez, Cardelli, Casali, Clowe, Clowe, D. Clowe, Fontana, Garrett, Hattori, Henry, Hoekstra, J. Tonry, Kaiser, Kaiser, Kodama, Landolt, Langston, Lawrence, Lawrence, Luppino, Mobasher, N. Trentham, Nair, Narasimha, Oke, Schlegel, Schneider, Schneider, Soucail, Trentham, Trentham, van Dokkum, Wilson   +32 more
core   +2 more sources