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The brightest cluster galaxy (BCG) in the Abell 1664 cluster is unusually blue and is forming stars at a rate of ~ 23 M_{\sun} yr^{-1}. The BCG is located within 5 kpc of the X-ray peak, where the cooling time of 3.5x10^8 yr and entropy of…

We report the results of a multi-wavelength study of the nearby galaxy group, Abell 3581 (z=0.0218). This system hosts the most luminous cool core of any nearby group and exhibits active radio mode feedback from the super-massive black hole…

We present new, deep (245 ks) Chandra observations of the galaxy cluster Abell 1664 ($z = 0.1283$). These images reveal rich structure, including elongation and accompanying compressions of the X-ray isophotes in the NE-SW direction,…

We analyze the X-ray and radio properties of the galaxy cluster Abell 2009 (z=0.152) to complete the in-depth study of a subsample of objects from the ROSAT Brightest Cluster Sample with relatively high X-ray flux and H$\alpha$ line…

Astrophysics of Galaxies · Physics 2025-03-12 I. Fornasiero , F. Ubertosi , M. Gitti

This paper presents properties of the intracluster medium (ICM) in the environment of a cool core cluster Abell 2566 (redshift $z$ = 0.08247) based on the analysis of 20 ks Chandra X-ray data. 2D imaging analysis of the Chandra data from…

High Energy Astrophysical Phenomena · Physics 2024-06-24 S. K. Kadam , Satish S. Sonkamble , N. D. Vagshette , M. K. Patil

There is a strong spatial correlation between brightest cluster galaxies (BCGs) and the peak density and cooling rate of the intra-cluster medium (ICM). In this paper we combine integral field spectroscopy, CO observations and X-ray data to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 S. L. Hamer , A. C. Edge , A. M. Swinbank , R. J. Wilman , H. R. Russell , A. C. Fabian , J. S. Sanders , P. Salom

Cold molecular gas is found in several clusters of galaxies (Edge, 2001, Salome' & Combes, 2003): single dish telescope observations in CO(1-0) and CO(2-1) emission lines have revealed the existence of large amounts of cold gas (up to…

Astrophysics · Physics 2009-11-10 P. Salome , F. Combes

We report ALMA Early Science CO(1-0) and CO(3-2) observations of the brightest cluster galaxy (BCG) in Abell 1664. The BCG contains 1.1x10^{10} solar masses of molecular gas divided roughly equally between two distinct velocity systems: one…

We perform one of the first spatially resolved studies of warm ($>$100 K) and cold (10-100 K) molecular gas in the circumgalactic medium (CGM), focusing on the brightest cluster galaxy (BCG) of a cool-core galaxy cluster, MACS1931-26 at…

We present multi-wavelength observations of the centre of RXCJ1504.1-0248 - the galaxy cluster with the most luminous and relatively nearby cool core at z~0.2. Although there are several galaxies within 100 kpc of the cluster core, only the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 G. A. Ogrean , N. A. Hatch , A. Simionescu , H. Böhringer , M. Brüggen , A. C. Fabian , N. Werner

By analysing the Chandra and XMM-Newton archived data of the nearby galaxy cluster Abell 3158, which was reported to possess a relatively regular, relaxed morphology in the X-ray band in previous works, we identify a bow edge-shaped…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Yu Wang , Haiguang Xu , Liyi Gu , Junhua Gu , Zhenzhen Qin , Jingying Wang , Zhongli Zhang , Xiang-Ping Wu

Abell~1142 is a low-mass galaxy cluster at low redshift containing two comparable Brightest Cluster Galaxies (BCG) resembling a scaled-down version of the Coma Cluster. Our Chandra analysis reveals an X-ray emission peak, roughly 100 kpc…

High Energy Astrophysical Phenomena · Physics 2016-04-20 Yuanyuan Su , David A. Buote , Fabio Gastaldello , Reinout van Weeren

We present a multiwavelength study of the massive galaxy cluster Abell 1763 at redshift z = 0.231. Image analysis of a 19.6 ks Chandra archival observation reveals a cluster-wide spiral of enhanced surface brightness in the intracluster…

High Energy Astrophysical Phenomena · Physics 2018-12-07 E. M. Douglass , E. L. Blanton , S. W. Randall , T. E. Clarke , L. O. V. Edwards , Z. Sabry , J. A. ZuHone

Located at z = 0.203, A2163 is a rich galaxy cluster with an intra-cluster medium (ICM) that exhibits extraordinary properties, including an exceptionally high X-ray luminosity, average temperature, and a powerful and extended radio halo.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 H. Bourdin , M. Arnaud , P. Mazzotta , G. W. Pratt , J. -L. Sauvageot , R. Martino , S. Maurogordato , A. Cappi , C. Ferrari , C. Benoist

We present an analysis of a 72 ks Chandra observation of the double cluster Abell 1644 (z=0.047). The X-ray temperatures indicate the masses are M500=2.6+/-0.4 x10^{14} h^{-1} M_sun for the northern subcluster and M500=3.1+/-0.4 x10^{14}…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Ryan E. Johnson , Maxim Markevitch , Gary A. Wegner , Christine Jones , William R. Forman

Based on HST and MUSE data, we probe the stellar and gas properties (i.e. kinematics, stellar mass, star formation rate) of the radio-loud brightest cluster galaxy (BCG) located at the centre of the X-ray luminous cool core cluster Abell…

Brightest cluster galaxies (BCG) are today passive and very massive galaxies at the center of their clusters, still accreting mass through swallowing companions, and flows of cold gas, regulated by radio-mode active galactic nucleus (AGN)…

Astrophysics of Galaxies · Physics 2025-08-20 G. Castignani , F. Combes , P. Salomé , A. Edge , P. Jablonka

We observed the brightest central galaxy (BCG) in the nearby (z=0.0821) cool core galaxy cluster Abell 2597 with the IRAC and MIPS instruments on board the Spitzer Space Telescope. The BCG was clearly detected in all Spitzer bandpasses,…

We present new Chandra X-ray observations of the brightest cluster galaxy (BCG) in the cool core cluster Abell 2597. The data reveal an extensive kpc-scale X-ray cavity network as well as a 15 kpc filament of soft-excess gas exhibiting…

We present results from XRISM/Resolve observations of the core of the galaxy cluster Abell 2319, focusing on its kinematic properties. The intracluster medium (ICM) exhibits temperatures of approximately 8 keV across the core, with a…

High Energy Astrophysical Phenomena · Physics 2025-09-03 XRISM Collaboration , Marc Audard , Hisamitsu Awaki , Ralf Ballhausen , Aya Bamba , Ehud Behar , Rozenn Boissay-malaquin , Laura Brenneman , Gregory V. Brown , Lia Corrales , Elisa Costantini , Renata Cumbee , Maria Diaz Trigo , Chris Done , Tadayasu Dotani , Ken Ebisawa , Megan E. Eckart , Dominique Eckert , Satoshi Eguchi , Teruaki Enoto , Yuichiro Ezoe , Adam Foster , Ryuichi Fujimoto , Yutaka Fujita , Yasushi Fukazawa , Kotaro Fukushima , Akihiro Furuzawa , Luigi Gallo , Javier García , Liyi Gu , Matteo Guainazzi , Kouichi Hagino , Kenji Hamaguchi , Isamu Hatsukade , Katsuhiro Hayashi , Takayuki Hayashi , Natalie Hell , Edmund Hodges-kluck , Ann Hornschemeier , Yuto Ichinohe , Daiki Ishi , Manabu Ishida , Kumi Ishikawa , Yoshitaka Ishisaki , Jelle Kaastra , Timothy Kallman , Erin Kara , Satoru Katsuda , Yoshiaki Kanemaru , Richard Kelley , Caroline Kilbourne , Shunji Kitamoto , Shogo B. Kobayashi , Takayoshi Kohmura , Aya Kubota , Maurice Leutenegger , Michael Loewenstein , Yoshitomo Maeda , Maxim Markevitch , Hironori Matsumoto , Kyoko Matsushita , Dan Mccammon , Brian Mcnamara , Francois Mernier , Eric Miller , Jon Miller , Ikuyuki Mitsuishi , Misaki Mizumoto , Tsunefumi Mizuno , Koji Mori , Koji Mukai , Hiroshi Murakami , Richard Mushotzky , Hiroshi Nakajima , Kazuhiro Nakazawa , Jan-uwe Ness , Kumiko Nobukawa , Masayoshi Nobukawa , Hirofumi Noda , Hirokazu Odaka , Shoji Ogawa , Anna Ogorzalek , Takashi Okajima , Naomi Ota , Stephane Paltani , Robert Petre , Paul Plucinsky , Frederick Porter , Katja Pottschmidt , Kosuke Sato , Toshiki Sato , Makoto Sawada , Hiromi Seta , Megumi Shidatsu , Aurora Simionescu , Randall Smith , Hiromasa Suzuki , Andrew Szymkowiak , Hiromitsu Takahashi , Mai Takeo , Toru Tamagawa , Keisuke Tamura , Takaaki Tanaka , Atsushi Tanimoto , Makoto Tashiro , Yukikatsu Terada , Yuichi Terashima , Yohko Tsuboi , Masahiro Tsujimoto , Hiroshi Tsunemi , Takeshi Tsuru , Hiroyuki Uchida , Nagomi Uchida , Yuusuke Uchida , Hideki Uchiyama , Yoshihiro Ueda , Shinichiro Uno , Jacco Vink , Shin Watanabe , Brian J. Williams , Satoshi Yamada , Shinya Yamada , Hiroya Yamaguchi , Kazutaka Yamaoka , Noriko Yamasaki , Makoto Yamauchi , Shigeo Yamauchi , Tahir Yaqoob , Tomokage Yoneyama , Tessei Yoshida , Mihoko Yukita , Irina Zhuravleva , Riccardo Seppi , Itsuki Aihara , Yuki Omiya
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