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Related papers: Dynamics of Abell 3266 - I. An Optical View of a C…

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We present new redshift measurements for 55 galaxies in the vicinity of the rich galaxy cluster Abell 665. When combined with results from the literature, we have good velocity measurements for a sample of 77 confirmed cluster members from…

Astrophysics · Physics 2009-10-31 Percy L. Gomez , John P. Hughes , Mark Birkinshaw

We present a dynamical analysis of the central ~1.3 square degrees of the cluster of galaxies Abell 1367, based on 273 redshift measurements (of which 119 are news). From the analysis of the 146 confirmed cluster members we derive a…

Astrophysics · Physics 2009-11-10 L. Cortese , G. Gavazzi , A. Boselli , J. Iglesias-Paramo , L. Carrasco

New Chandra X-ray data and extensive optical spectroscopy, obtained with AAOmega on the 3.9 m Anglo-Australian Telescope, are used to study the complex merger taking place in the galaxy cluster Abell 2744. Combining our spectra with data…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Matt S. Owers , Scott W. Randall , Paul E. J. Nulsen , Warrick J. Couch , Laurence P. David , Joshua C. Kempner

A total of 663 galaxies with known redshifts in a $6\deg\!\times 6\deg$ field centered on A2634, including 211 new measurements, are used to study the structure of this cluster and its surroundings. Two samples, ---one containing 200…

Astrophysics · Physics 2009-10-22 Marco Scodeggio , José M. Solanes , Riccardo Giovanelli , Martha P. Haynes

Abell 3266 is one of the X-ray brightest galaxy clusters in the sky and is a well-known merging system. Using the ability of the eROSITA telescope onboard SRG (Spectrum R\"ontgen Gamma) to observe a wide field with a single pointing, we…

We present a detailed optical analysis of the galaxy cluster A2163 based on new multicolor wide field imaging and medium-to-high resolution (R~2000) spectroscopy. While X-ray observations have revealed that merging processes are present in…

In this paper we present new AAOmega spectroscopy of 254 galaxies within a 30' radius around Abell 3888. We combine these data with the existing redshifts measured in a one degree radius around the cluster and performed a substructure…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-24 S. Shakouri , M. Johnston-Hollitt , S. Dehghan

We present evidence for the existence of significant substructure in the cold front cluster Abell 3667 based on multi-object spectroscopy taken with the 3.9m Anglo Australian Telescope. This paper is the second in a series analyzing the…

Astrophysics · Physics 2011-02-11 Matt S. Owers , Warrick J. Couch , Paul E. J. Nulsen

To investigate the dynamics of the galaxy cluster A2142, we compile an extended catalog of 2239 spectroscopic redshifts of sources, including newly measured 237 redshifts, within 30 arcmin from the cluster center. With the $\sigma$-plateau…

Astrophysics of Galaxies · Physics 2018-08-22 Ang Liu , Heng Yu , Antonaldo Diaferio , Paolo Tozzi , Ho Seong Hwang , Keiichi Umetsu , Nobuhiro Okabe , Li-Lan Yang

A temperature map of the A3266 galaxy cluster has been derived from the ASCA GIS observations. It shows an asymmetric pattern of heating indicative of an ongoing merger between a group sized sub-cluster and the main cluster. The galaxy…

Astrophysics · Physics 2009-10-31 Mark Henriksen , R. Hank Donnelly , David S. Davis

The mechanisms giving rise to diffuse radio emission in galaxy clusters, and in particular their connection with cluster mergers, are still debated. We aim to obtain new insights into the internal dynamics of the cluster Abell 2294,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 M. Girardi , W. Boschin , R. Barrena

We explore the internal dynamics of Abell 2254, which has been shown to host a very clumpy and irregular radio halo. Our analysis is mainly based on redshift data for 128 galaxies acquired at the TNG. We also use new g',r',i' photometric…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 M. Girardi , S. Bardelli , R. Barrena , W. Boschin , F. Gastaldello , M. Nonino

We seek to explore the internal dynamics of the cluster Abell 1758N, which has been shown to host a radio halo and two relics, and is known to be a merging bimodal cluster. Our analysis is mainly based on new redshift data for 137 galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 W. Boschin , M. Girardi , R. Barrena , M. Nonino

Using the mosaic of nine XMM-Newton observations, we study the hydrodynamic state of the merging cluster of galaxies Abell 3266. The high quality of the spectroscopic data and large field of view of XMM-Netwon allow us to determine the…

Astrophysics · Physics 2009-11-11 A. Finoguenov , M. J. Henriksen , F. Miniati , U. G. Briel , C. Jones

We present a detailed dynamical analysis of the rich galaxy cluster A2744, containing a powerful diffuse radio halo.Our analysis is based on redshift data for 102 galaxies, part of them recovered from unexplored spectra in the ESO archive.…

Astrophysics · Physics 2009-11-11 W. Boschin , M. Girardi , M. Spolaor , R. Barrena

We present a dynamical analysis of the galaxy cluster Abell 376 based on a set of 73 velocities, most of them measured at Pic du Midi and Haute-Provence observatories and completed with data from the literature. Data on individual galaxies…

Astrophysics · Physics 2009-11-07 D. Proust , H. V. Capelato , G. Hickel , L. Sodre , G. B. Lima Neto , H. Cuevas

We present the results from an extensive spectroscopic survey of the central region of the nearby galaxy cluster Abell 2199 at $z=0.03$. By combining 775 new redshifts from the MMT/Hectospec observations with the data in the literature, we…

Astrophysics of Galaxies · Physics 2017-06-28 Hyunmi Song , Ho Seong Hwang , Changbom Park , Takayuki Tamura

We aim to obtain new insights into the internal dynamics of the cluster Abell 2345. This cluster exhibits two non-symmetric radio relics well studied through recent, deep radio data. Our analysis is based on redshift data for 125 galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Walter Boschin , Rafael Barrena , Marisa Girardi

We present results from a BeppoSAX observation of the rich cluster Abell 3266. The broad band spectrum (2-50 keV) of the cluster, when fitted with an optically thin thermal emission model, yields a temperature of 8.1 +/- 0.2 keV and a metal…

Astrophysics · Physics 2009-10-31 Sabrina De Grandi , Silvano Molendi

Abell 2744, also known as Pandora's Cluster, is a complex merging galaxy cluster. While a major merger is clear along the north-south axis, the dynamical state of the northwest subcluster has been highly uncertain. We present ultra-deep…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-04 Urmila Chadayammuri , Ákos Bogdán , Gerrit Schellenberger , John ZuHone
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