Results 61 to 70 of about 91,719 (307)

DETAILED MORPHOLOGY OF THE RICH CONCENTRATED GALAXY CLUSTERS

Odessa Astronomical Publications, 2018
The results of the detailed analysis of the 2D distribution of galaxies in 28 rich galaxy clusters with significant concentration to the cluster center are present.
E. Panko, A. Sirginava, A. Stepaniuk
doaj   +1 more source

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

Riding the wake of a merging galaxy cluster [PDF]

, 2011
Using WHT OASIS integral field unit observations, we report the discovery of a thin plume of ionised gas extending from the brightest cluster galaxy in Abell 2146 to the sub-cluster X-ray cool core which is offset from the BCG by ~37 kpc.
A. C. Fabian, A. I. Zabludoff, Abramson, Ascasibar, B. R. McNamara, Baldwin, Binney, C. S. Crawford, Colbert, Crawford, Dursi, Edge, Edwards, Evrard, H. R. Russell, Hallman, Hatch, Heckman, Hudson, Kewley, Kormendy, Krivonos, L. J. King, Lyutikov, Macario, Markevitch, Markevitch, Markevitch, Markwardt, Mathis, McNamara, Moré, N. A. Hatch, Oguri, Osterbrock, O’Dea, Peterson, Poole, R. E. A. Canning, Rupke, Russell, Russell, S. I. Raimundo, S. Okamoto, Sanders, Sanderson, Sarazin, Schlegel, Springel, Sun, Veilleux, Wilman, Wilman, Yagi, Zabludoff   +54 more
core   +1 more source

Deep MOS Spectroscopy of NGC 1316 Globular Clusters

Galaxies, 2017
The giant elliptical galaxy NGC 1316 is the brightest galaxy in the Fornax cluster, and displays a number of morphological features that might be interpreted as an intermediate age merger remanent (∼3 Gyr).
Leandro A. Sesto, Favio R. Faifer, Juan C. Forte, Analía V. Smith Castelli   +3 more
doaj   +1 more source

A 1010 SOLAR MASS FLOW OF MOLECULAR GAS IN THE A1835 BRIGHTEST CLUSTER GALAXY [PDF]

, 2013
We report ALMA Early Science observations of the A1835 brightest cluster galaxy (BCG) in the CO (3–2) and CO (1–0) emission lines. We detect 5 × 1010 M☉ of molecular gas within 10 kpc of the BCG. Its ensemble velocity profile width of ∼130 km s−1 FWHM is
B. McNamara, H. Russell, P. Nulsen, A. Edge, N. Murray, R. Main, A. Vantyghem, F. Combes, A. Fabian, P. Salomé, C. Kirkpatrick, S. Baum, J. Bregman, M. Donahue, E. Egami, S. Hamer, C. O’Dea, J. Oonk, G. Tremblay, G. Voit   +19 more
semanticscholar   +1 more source

A NOVEL APPROACH TO CONSTRAIN THE MASS RATIO OF MINOR MERGERS IN ELLIPTICAL GALAXIES: APPLICATION TO NGC 4889, THE BRIGHTEST CLUSTER GALAXY IN COMA [PDF]

Astrophysical Journal, 2013
Minor mergers are thought to be important for the buildup and structural evolution of massive elliptical galaxies. In this work, we report the discovery of a system of four shell features in NGC 4889, one of the brightest members of the Coma cluster ...
M. Gu, L. Ho, C. Peng, Song Huang School of Astronomy, S. Science, N. University, The Observatories of the Carnegie Institution for Science, Giant Magellan Telescope Organization, Key Laboratory of Optical Astronomy, Astrophysics   +9 more
semanticscholar   +1 more source

Separating baryons and dark matter in cluster cores: a full 2-D lensing and dynamic analysis of Abell 383 and MS2137-23 [PDF]

, 2007
(abridged) We utilize existing imaging and spectroscopic data for the galaxy clusters MS2137-23 and Abell 383 to present improved measures of the distribution of dark and baryonic material in the clusters' central regions.
David J. Sand, Diemand J., Graham P. Smith, Jaffe W., Jean‐Paul Kneib, Natarajan P., Richard S. Ellis, Tommaso Treu   +7 more
core   +2 more sources

MASSIVE MOLECULAR GAS FLOWS IN THE A1664 BRIGHTEST CLUSTER GALAXY [PDF]

, 2013
We report ALMA Early Science CO(1–0) and CO(3–2) observations of the brightest cluster galaxy (BCG) in A1664. The BCG contains 1.1 × 1010 M☉ of molecular gas divided roughly equally between two distinct velocity systems: one from −250 to +250 km s−1 ...
H. Russell, B. McNamara, B. McNamara, B. McNamara, A. Edge, P. Nulsen, R. Main, A. Vantyghem, F. Combes, A. C. Fabian, Norm Murray, P. Salomé, R. Wilman, S. Baum, M. Donahue, C. O’Dea, J. Oonk, Grant R. Tremblay, G. Voit   +18 more
semanticscholar   +1 more source

PS1-12sk IS A PECULIAR SUPERNOVA FROM A He-RICH PROGENITOR SYSTEM IN A BRIGHTEST CLUSTER GALAXY ENVIRONMENT [PDF]

, 2013
We report on our discovery and observations of the Pan-STARRS1 supernova (SN) PS1-12sk, a transient with properties that indicate atypical star formation in its host galaxy cluster or pose a challenge to popular progenitor system models for this class of
N. Sanders, A. Soderberg, R. Foley, R. Chornock, D. Milisavljevic, R. Margutti, M. Drout, M. Moe, E. Berger, Warren R. Brown, R. Lunnan, S. Smartt, M. Fraser, R. Kotak, L. Magill, K. Smith, D. Wright, K. Huang, Y. Urata, J. S.Mulchaey, A. Rest, D. Sand, L. Chomiuk, A. Friedman, R. Kirshner, G. H. Marion, J. Tonry, W. Burgett, K. Chambers, K. Hodapp, R. Kudritzki, P. Price   +31 more
semanticscholar   +1 more source

Precision Modeling of JWST's First Cluster Lens SMACS J0723.3–7327

The Astrophysical Journal, 2023
Exploiting the fundamentally achromatic nature of gravitational lensing, we present a lens model for the massive galaxy cluster SMACS J0723.3−7323 (SMACS J0723; z = 0.388) that significantly improves upon earlier work.
Guillaume Mahler, Mathilde Jauzac, Johan Richard, Benjamin Beauchesne, Harald Ebeling, David Lagattuta, Priyamvada Natarajan, Keren Sharon, Hakim Atek, Adélaïde Claeyssens, Benjamin Clément, Dominique Eckert, Alastair Edge, Jean-Paul Kneib, Anna Niemiec   +14 more
doaj   +1 more source