Results 1 to 10 of about 60,700 (179)

The Galaxy Content of SDSS Clusters and Groups [PDF]

The Astrophysical Journal, 2007
Imaging data from the Sloan Digital Sky Survey are used to characterize the population of galaxies in groups and clusters detected with the MaxBCG algorithm.
Abell, Abott, Adelman-McCarthy, Baldry, Balogh, Balogh, Balogh, Barkhouse, Becker, Bell, Benjamin P. Koester, Benítez, Berlind, Berlind, Bernardi, Bernstein, Blanton, Blanton, Blanton, Blanton, Blanton, Brough, Christlein, Coil, Conroy, Conroy, Cooray, Couch, De Lucia, Desai, Dressler, Dubinski, Edge, Ellingson, Erin S. Sheldon, Evrard, Faber, Fasano, Gao, Gilbank, Gonzalez, Gonzalez, Gonzalez, Goto, Goto, Gunn, Gunn, Gómez, Hansen, Hogg, Hogg, Johnston, Johnston, Kaiser, Koester, Koester, Lin, Lin, Lubin, Ludlow, Margoniner, Margoniner, Masjedi, Menanteau, Oemler, Pier, Poggianti, Purcell, Risa H. Wechsler, Robotham, Rojas, Rozo, Rozo, Rykoff, Sarah M. Hansen, Schlegel, Scranton, Sheldon, Sheldon, Skibba, Smail, Smith, Smith, Strateva, Tanaka, Tinker, Tonry, Tovmassian, Treu, Tyson, Valotto, van der Wel, van Dokkum, Yagi, York, Zabludoff, Zehavi, Zheng, Zheng   +98 more
core   +5 more sources

Galaxy clusters and groups in the ALHAMBRA Survey [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We present a catalogue of 348 galaxy clusters and groups with $0 ...
Aguerri, J. Alfonso L., Alfaro, Emilio, Aparicio-Villegas, Teresa, Arnalte-Mur, Pablo, Ascaso, Begoña, Benítez, Narciso, Broadhurst, Tom, Cabrera-Caño, Jesús, Castander, Francisco J., Cenarro, A. Javier, Cepa, Jordi, Cerviño, Miguel, Cristóbal-Hornillos, David, Del Olmo, Ascensión, Dupke, Renato, Díaz-García, Luis Alberto, Fernández-Soto, Alberto, González~Delgado, Rosa M., Huertas-Company, Marc, Hurtado-Gil, Lluis, Husillos, Cesar, Infante, Leopoldo, Jiménez-Teja, Yolanda, López-Sanjuan, Carlos, Martínez, Vicent J., Masegosa, Josefa, Merson, Alexander I., Moles, Mariano, Molino, Alberto, Márquez, Isabel, Nieves-Seoane, Lorena, Perea, Jaime, Povic, Mirjana, Prada, Francisco, Quintana, Jose María, Schoenell, William, Varela, Jesús, Viironen, Kerttu   +37 more
core   +12 more sources

The cosmological constant derived via galaxy groups and clusters

European Physical Journal C: Particles and Fields, 2019
The common nature of dark matter and dark energy is argued in Gurzadyan (Eur Phys J Plus 134:14, 2019) based on the approach that the cosmological constant $$\varLambda $$ Λ enters the weak-field General Relativity following from Newton theorem on the ...
V. G. Gurzadyan, A. Stepanian
doaj   +3 more sources

Iron as a tracer in galaxy clusters and groups [PDF]

The Astrophysical Journal, 1997
Available X-ray data are collected and organized concerning the iron and gas content of galaxy clusters and groups, together with the optical luminosity, mass and iron abundance of cluster galaxies.
Allen S. W., Alvio Renzini, Aragon-Salamanca A., Arimoto N., Arnaud M., Bower R. G., Davies R. L., Elbaz D., Greggio L., Greggio L., Jablonka P., Larson R. B., Madau P., Matteucci F., Matteucci F., Melnick J., Mitchell R., Mulchaey J. S., Ruiz-Lapuente P., Schindler S., Theuns T., van Dokkum P. G., Vigroux L.   +22 more
core   +5 more sources

Galaxy and mass assembly (GAMA): the clustering of galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We explore the clustering of galaxy groups in the Galaxy and Mass Assembly (GAMA) survey to investigate the dependence of group bias and profile on separation scale and group mass. Due to the inherent uncertainty in estimating the group selection function, and hence the group autocorrelation function, we instead measure the ...
S D Riggs, R W Y M Barbhuiyan, J Loveday, S Brough, B W Holwerda, A M Hopkins, S Phillipps   +6 more
openaire   +3 more sources

Properties of Fossil Groups of Galaxies

Universe, 2021
We review the formation and evolution of fossil groups and clusters from both the theoretical and the observational points of view. In the optical band, these systems are dominated by the light of the central galaxy.
J. Alfonso L. Aguerri, Stefano Zarattini
doaj   +1 more source

The Effect of Splashback on Weak Lensing Mass Estimates of Galaxy Clusters and Groups

The Open Journal of Astrophysics, 2023
The splashback radius of a dark matter halo, which corresponds to the first apocenter radius reached by infalling matter and substructures, has been detected around galaxy clusters using a multitude of observational methods, including weak lensing ...
Yuanyuan Zhang, Susmita Adhikari, Matteo Constanzi, Josh Frieman, Jim Annis, Chihway Chang   +5 more
doaj   +2 more sources

Galaxy structures — groups, clusters and superclusters [PDF]

International Journal of Geometric Methods in Modern Physics, 2014
We provide a brief summary of the history of galaxy structure studies. We also introduce several large-scale redshift surveys and summarize the most commonly used methods to identify the groups and clusters of galaxies. We present several catalogs of galaxy groups. These catalogs can be used to study the galaxy groups in different environments.
Sepp, Tiit, Gramann, Mirt
openaire   +2 more sources

Hot Atmospheres of Galaxies, Groups, and Clusters of Galaxies [PDF]

, 2020
Accepted for publication in the book "Reviews in Frontiers of Modern Astrophysics: From Space Debris to Cosmology" (eds Kabath, Jones and Skarka; publisher Springer Nature) funded by the European Union Erasmus+ Strategic Partnership grant "Per Aspera Ad Astra Simul" 2017-1-CZ01-KA203 ...
Werner, Norbert, Mernier, François
openaire   +2 more sources

Galaxy Quenching with Mass Growth History of Galaxy Groups and Clusters: The Importance of Post-processing

The Astrophysical Journal, 2023
We investigate the fraction of quenched satellite galaxies in host galaxy groups and clusters using TNG300 in the IllustrisTNG cosmological magnetohydrodynamical simulations.
So-Myoung Park, Kyungwon Chun, Jihye Shin, Hyunjin Jeong, Joon Hyeop Lee, Mina Pak, Rory Smith, Jae-Woo Kim   +7 more
doaj   +1 more source