Results 51 to 60 of about 162,871 (277)

Galaxy Group Ellipticity Confirms a Younger Cosmos

Universe
We present an analysis of the ellipticities of galaxy groups, derived from the spatial distribution of member galaxies, revealing a notable incongruity between the observed local galaxy groups and their counterparts in the Lambda cold dark matter ...
Yu Rong
doaj   +1 more source

A Search for Gas-Rich Dwarf Galaxies in the Local Universe with ALFALFA and the WIYN One Degree Imager

The Astronomical Journal, 2023
We present results from an optical search for Local Group dwarf galaxy candidates associated with the Ultra-Compact High Velocity Clouds (UCHVCs) discovered by the ALFALFA neutral hydrogen survey.
Katherine L. Rhode, Nicholas J. Smith, William F. Janesh, John J. Salzer, Elizabeth A. K. Adams, Martha P. Haynes, Steven Janowiecki, John M. Cannon   +7 more
doaj   +1 more source

Evolution of galaxy groups in the Illustris simulation

, 2016
We present the first study of evolution of galaxy groups in the Illustris simulation. We focus on dynamically relaxed and unrelaxed galaxy groups representing dynamically evolved and evolving galaxy systems, respectively.
Dariush, Ali A., Khosroshahi, Habib G., Raouf, Mojtaba   +2 more
core   +2 more sources

Galaxy groups in the 2dF Galaxy Redshift Survey: galaxy spectral type segregation in groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
3 figures replaced, accepted for publication in ...
Diego G. Lambas, A. A. Zandivarez, M. E. Merchán, H. J. Martínez, Hernán Muriel, Mariano Dominguez   +5 more
openaire   +4 more sources

Genome‐wide identification and biological relevance of broccoli aquaporins

The Plant Genome, Volume 15, Issue 4, December 2022., 2022
Abstract Broccoli (Brassica oleracea var. italica) is an important crop worldwide, and its regular consumption is associated with health benefits due to the presence of various bioactive compounds. An optimal water balance and homeostasis are needed for plant growth; in this sense, aquaporins play a crucial role.
Juan Nicolas‐Espinosa, Micaela Carvajal   +1 more
wiley   +1 more source

DISCRETE X-RAY SOURCES IN GALAXY CLUSTERS

Odessa Astronomical Publications, 2020
Current studies of extragalactic X-ray sources using data from orbital observatory XMM- Newton are at the front line of X-ray astronomy. Resolution capacity of the observatory instruments enable to detect separate X-ray sources in the close galaxies.
A. V. Tugay, L. V. Zadorozhna, S. Yu. Shevchenko   +2 more
doaj   +1 more source

Systematically Measuring Ultradiffuse Galaxies (SMUDGes). IV. Ultradiffuse Satellites of Milky Way Analogs

The Astronomical Journal, 2023
To better understand the formation of large, low-surface-brightness galaxies, we measure the correlation function between ultradiffuse galaxy (UDG) candidates and Milky Way analogs (MWAs).
Hina Goto, Dennis Zaritsky, Ananthan Karunakaran, Richard Donnerstein, David J. Sand   +4 more
doaj   +1 more source

Weak Lensing by Galaxies in Groups and Clusters: I.--Theoretical Expectations [PDF]

, 2006
Galaxy-galaxy lensing is rapidly becoming one of the most promising means to accurately measure the average relation between galaxy properties and halo mass. In order to obtain a signal of sufficient signal-to-noise, one needs to stack many lens galaxies
Bartelmann, Bartelmann, Benson, Berlind, Berlind, Brainerd, Brainerd, Bullock, Cole, Conroy, Conroy, Cooray, Cooray, Croton, Dahle, De Lucia, Dell'Antonio, Eke, Fardal, Fischer, Frank C. Van Den Bosch, Gao, Gentile, Gentile, Griffiths, Guzik, Guzik, H. J. Mo, Hayashi, Hoekstra, Hoekstra, Hoekstra, Hudson, Jing, Jing, Jing, Jing, Kang, Katz, Kauffmann, Kauffmann, Kay, Kleinheinrich, Klypin, Kravtsov, Lin, Lu, M. Meneghetti, Mandelbaum, Mandelbaum, Mandelbaum, Mandelbaum, McKay, McKay, Meneghetti, Miralda-Escudé, Mo, Mo, Moore, Natarajan, Natarajan, Natarajan, Navarro, Navarro, Parker, Power, Prada, Reed, Sand, Schneider, Seljak, Sheldon, Simon, Simone M. Weinmann, Smith, Somerville, Spergel, Springel, Springel, Swaters, Tasitsiomi, Tinker, Tyson, Vale, Vale, Van Den Bosch, Van Den Bosch, Van Den Bosch, Van Den Bosch, Van Den Bosch, Van Den Bosch, Van Den Bosch, Wechsler, Weinberg, Weinmann, White, White, Wilson, Wright, Xiaohu Yang, Y. P. Jing, Yang, Yang, Yang, Yang, Yang, Yoo, Zaritsky, Zhao, Zhao, Zhao, Zheng   +111 more
core   +2 more sources

HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line Spectroscopy

The Astrophysical Journal
We present Chandra and XMM-Newton X-ray observations of the compact group HCG 57, and optical integral field spectroscopy of the interacting galaxy pair HCG 57A/D.
Ewan O’Sullivan, P. N. Appleton, B. A. Joshi, Lauranne Lanz, Katherine Alatalo, Jan M. Vrtilek, Andreas Zezas, Laurence P. David   +7 more
doaj   +1 more source

Disturbed Fossil Group Galaxy NGC 1132

, 2018
We have analyzed the Chandra archival data of NGC 1132, a well-known fossil group, i.e. a system expected to be old and relaxed long after the giant elliptical galaxy assembly. Instead, the Chandra data reveal that the hot gas morphology is disturbed and
Anderson, Craig, Burke, Doug, Fabbiano, Giuseppina, Fruscione, Antonella, Kim, Dong-Woo, Lauer, Jen, McCollough, Michael, Morgan, Doug, Mossman, Amy, O'Sullivan, Ewan, Paggi, Alessandro, Trinchieri, Ginevra, Vrtilek, Saeqa   +12 more
core   +1 more source