Results 161 to 170 of about 91,719 (307)

The ACS Nearby Galaxy Survey Treasury. X. Quantifying the Star Cluster Formation Efficiency of Nearby Dwarf Galaxies

, 2012
We study the relationship between the field star formation and cluster formation properties in a large sample of nearby dwarf galaxies. We use optical data from the Hubble Space Telescope and from ground-based telescopes to derive the ages and masses of ...
Anil C. Seth, Bastian, Bertelli, Billett, Boselli, Bressan, Bressert, Buat, Chandar, Chandar, Chandar, Charles W. Engelbracht, da Silva, Dalcanton, Dale, Dale, Daniel A. Dale, Daniel R. Weisz, David O. Cook, Dohm-Palmer, Evans, Fall, Fall, Fioc, Fouesneau, Fumagalli, Gieles, Girardi, Goddard, Groenewegen, Hunter, Hunter, Hunter, Hénon, Julianne J. Dalcanton, Karachentsev, Kennicutt, Knut A. G. Olsen, Kroupa, L. Clifton Johnson, Larsen, Larsen, Lee, Lee, Leroy, Marble, Maíz Apellániz, McCrady, McQuinn, Meurer, Morgan Fouesneau, Moustakas, Muñoz-Mateos, Popescu, Porras, Schlegel, Weisz, Weisz, Weisz, Whitmore, Whitmore, Zhang   +61 more
core   +1 more source

PEARLS: Globular Clusters and Ultracompact Dwarfs in the El Gordo Galaxies at z = 0.87

The Astrophysical Journal
JWST/NIRCam 0.9 to 2.0 μ m images reveal a population of point sources around the major galaxies in the El Gordo cluster at redshift z = 0.87. Their distribution in the color–magnitude diagrams shows a narrow sequence well separated from field-galaxy ...
William E. Harris, Marta Reina-Campos, Anton M. Koekemoer, Jessica M. Berkheimer, Timothy Carleton, Seth H. Cohen, Brenda L. Frye, Tyler R. Hinrichs, Benne W. Holwerda, Rachel Honor, Massimo Ricotti, S. P. Willner, Rogier A. Windhorst, Haojing Yan   +13 more
doaj   +1 more source

Recent Formation of a Spiral Disk Hosting Progenitor Globular Clusters at the Center of the Perseus Brightest Cluster Galaxy. II. Progenitor Globular Clusters [PDF]

, 2022
Jeremy Lim, Emily Wong, Youichi Ohyama, Michael C. H. Yeung   +3 more
openalex   +1 more source

XRISM Reveals Low Nonthermal Pressure in the Core of the Hot, Relaxed Galaxy Cluster A2029

The Astrophysical Journal Letters
We present XRISM Resolve observations of the core of the hot, relaxed galaxy cluster Abell 2029 (A2029). We find that the line-of-sight bulk velocity of the intracluster medium (ICM) within the central 180 kpc is at rest with respect to the brightest ...
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 A. García, Liyi Gu, Matteo Guainazzi, Kouichi Hagino, Kenji Hamaguchi, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Natalie Hell, Edmund Hodges-Kluck, Ann Hornschemeier, Yuto Ichinohe, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Jelle Kaastra, Timothy Kallman, Erin Kara, Satoru Katsuda, Yoshiaki Kanemaru, Richard Kelley, Caroline Kilbourne, Shunji Kitamoto, Shogo Kobayashi, Takayoshi Kohmura, Aya Kubota, Maurice Leutenegger, Michael Loewenstein, Yoshitomo Maeda, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian McNamara, François Mernier, Eric D. Miller, Jon M. 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 S. 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, Tommaso Bartalesi, Stefano Ettori, Roman Kosarzycki, Lorenzo Lovisari, Tom Rose, Arnab Sarkar, Ming Sun, Prathamesh Tamhane   +138 more
doaj   +1 more source

Brightest Cluster Galaxy Formation in Low-Redshift Galaxy Clusters

, 2001
4 pages, 1 figure, Contribution to "Tracing Cosmic Evolution with Galaxy Clusters" (Sesto2001), ASP Conference ...
Barkhouse, Wayne A., Yee, H. K. C., Lopez-Cruz, Omar   +2 more
openaire   +2 more sources

Weak-lensing Characterization of the Dark Matter in 29 Merging Clusters that Exhibit Radio Relics

The Astrophysical Journal Supplement Series
We present a multiwavelength analysis of 29 merging galaxy clusters that exhibit radio relics. For each merging system, we perform a weak-lensing analysis on Subaru optical imaging.
Kyle Finner, M. James Jee, Hyejeon Cho, Kim HyeongHan, Wonki Lee, Reinout J. van Weeren, David Wittman, Mijin Yoon   +7 more
doaj   +1 more source

On the Merging Cluster Abell 578 and Its Central Radio Galaxy 4C +67.13

, 2015
Here we analyze radio, optical, and X-ray data for a peculiar cluster Abell 578. This cluster is not fully relaxed and consists of two merging sub-systems.
Cheung, C. C., Hagino, K., Harris, D. E., Koziel-Wierzbowska, D., Madejski, G., Siemiginowska, A., Simionescu, A., Stawarz, L., Szostek, A., Takahashi, T.   +9 more
core   +1 more source

AGN jet power and feedback characterised by Bondi accretion in brightest cluster galaxies [PDF]

, 2014
Yutaka Fujita, Isaac Shlosman, Nozomu Kawakatu   +2 more
openalex   +1 more source

Fundamental parameters of brightest cluster galaxies

The Astrophysical Journal, 1991
Photometry and spectroscopy of a sample of the brightest cluster galaxies (BCGs) are presented, and the relationships between scale length, surface brightness, velocity dispersion, and line strength are determined and compared with the relations determined for lower luminosity ellipticals (LLEs).
William R. Oegerle, John G. Hoessel
openaire   +1 more source

Correlations in Relaxed Clusters of Galaxies

Open Astronomy, 2014
The correlations among different quantities in galaxy clusters, observed by Newman et al. (2013a,b), are investigated. We find an anti-correlation among the slope α, the effective radius, Re, and a correlation among the core radius rcore and Re. Moreover,
Babyk Iu., Del Popolo A.
doaj   +1 more source