Results 1 to 10 of about 162,871 (277)

Formation of a Massive Lenticular Galaxy Under the Tidal Interaction with a Group of Dwarf Galaxies

The Astrophysical Journal Letters, 2023
Based on the atomic-hydrogen (H i ) observations using the Five-hundred-meter Aperture Spherical radio Telescope, we present a detailed study of the gas-rich massive S0 galaxy NGC 1023 in a nearby galaxy group.
Jin-Long Xu, Ming Zhu, Kelley M. Hess, Naiping Yu, Chuan-Peng Zhang, Xiao-Lan Liu, Mei Ai, Peng Jiang, Jie Wang   +8 more
doaj   +1 more source

The Effect of the LMC on the Milky Way System

Galaxies, 2023
We review the recent theoretical and observational developments concerning the interaction of the Large Magellanic Cloud (LMC) with the Milky Way and its neighbourhood.
Eugene Vasiliev
doaj   +1 more source

The Galaxy Number Density Profile of Halos

The Astrophysical Journal, 2023
More precise measurements of galaxy clustering will be provided by the next generation of galaxy surveys, such as DESI, WALLABY, and the Square Kilometre Array.
Fei Qin, David Parkinson, Adam R. H. Stevens, Cullan Howlett   +3 more
doaj   +1 more source

The JWST PEARLS View of the El Gordo Galaxy Cluster and of the Structure It Magnifies

The Astrophysical Journal, 2023
The massive galaxy cluster El Gordo ( z = 0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope Near-Infrared Camera (NIRCam) images.
Brenda L. Frye, Massimo Pascale, Nicholas Foo, Reagen Leimbach, Nikhil Garuda, Paulina Soto Robles, Jake Summers, Carlos Diaz, Patrick Kamieneski, Lukas J. Furtak, Seth H. Cohen, Jose Diego, Benjamin Beauchesne, Rogier A. Windhorst, S. P. Willner, Anton M. Koekemoer, Adi Zitrin, Gabriel Caminha, Karina I. Caputi, Dan Coe, Christopher J. Conselice, Liang Dai, Hervé Dole, Simon P. Driver, Norman A. Grogin, Kevin Harrington, Rolf A. Jansen, Jean-Paul Kneib, Matt Lehnert, James Lowenthal, Madeline A. Marshall, Felipe Menanteau, Belén Alcalde Pampliega, Nor Pirzkal, Mari Polletta, Johan Richard, Aaron Robotham, Russell E. Ryan Jr., Michael J. Rutkowski, Christóbal Sifón, Scott Tompkins, Daniel Wang, Haojing Yan, Min S. Yun   +43 more
doaj   +1 more source

Dark Matter Halo Properties of the Galactic Dwarf Satellites: Implication for Chemo-dynamical Evolution of the Satellites and a Challenge to Lambda Cold Dark Matter

The Astrophysical Journal, 2023
Elucidating dark matter density profiles in Galactic dwarf satellites is essential to understanding not only the quintessence of dark matter, but also the evolution of the satellites themselves.
Kohei Hayashi, Yutaka Hirai, Masashi Chiba, Tomoaki Ishiyama   +3 more
doaj   +1 more source

Implications of the Milky Way Travel Velocity for Dynamical Mass Estimates of the Local Group

The Astrophysical Journal, 2022
The total mass of the Local Group (LG) is a fundamental quantity that enables interpreting the orbits of its constituent galaxies and placing the LG in a cosmological context.
Katie Chamberlain, Adrian M. Price-Whelan, Gurtina Besla, Emily C. Cunningham, Nicolás Garavito-Camargo, Jorge Peñarrubia, Michael S. Petersen   +6 more
doaj   +1 more source

Identifying dynamically young galaxy groups via wide-angle tail galaxies: A case study in the COSMOS field at z=0.53 [PDF]

, 2010
We present an analysis of a wide-angle tail (WAT) radio galaxy located in a galaxy group in the COSMOS field at a redshift of z=0.53 (hereafter CWAT-02).
A. Finoguenov, A. Koekemoer, A. Oklopčić, Abazajian, Best, Birzan, Birzan, Blanton, Botzler, C. L. Carilli, Capak, E. Schinnerer, Elvis, Finoguenov, G. Zamorani, Giodini, Giodini, Hasinger, Ilbert, Kim, Koekemoer, L. Bîrzan, Leauthaud, Lilly, Lilly, N. Z. Scoville, Oegerle, Roettiger, S. Giodini, S. Lilly, Sakelliou, Salvato, Sato, Schinnerer, Schinnerer, Scoville, Scoville, Short, Smolčić, Smolčić, Smolčić, V. Smolčić, York   +42 more
core   +4 more sources

Group-galaxy correlations in redshift space as a probe of the growth of structure [PDF]

, 2016
We investigate the use of the cross-correlation between galaxies and galaxy groups to measure redshift-space distortions (RSD) and thus probe the growth rate of cosmological structure. This is compared to the classical approach based on using galaxy auto-
Bianchi, Davide, de la Torre, Sylvain, Guzzo, Luigi, Mohammad, Faizan G., Peacock, John A.   +4 more
core   +4 more sources

The galaxy environment in GAMA G3C groups using the Kilo Degree Survey Data Release 3 [PDF]

, 2018
We aim to investigate the galaxy environment in GAMA Galaxy Groups Catalogue (G3C) using a volume-limited galaxy sample from the Kilo Degree Survey Data Release 3.
Bilicki, M., Brouwer, M. M., Buddelmeijer, H., Costa-Duarte, M. V., de Jong, J. T. A., Getman, F., Grado, A., Kleijn, G. V., Kuijken, K., Molino, A., Napolitano, N., Puddu, E., Radovich, M., Sodré Jr., L., Vakili, M., Viola, M.   +15 more
core   +5 more sources

Galaxy interactions II: High density environments [PDF]

, 2011
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7).
Abazajian, Abazajian, Alonso, Alonso, Alonso, Baldry, Baldry, Balogh, Balogh, Balogh, Barton, Berlind, Blanton, Brinchmann, Ceccarelli, Colless, Cooper, Cooper, Coziol, D. G. Lambas, Darg, De Lucia, Dressler, Ellison, González, González, Gunn, Heiderman, Hopkins, Hopkins, Huchra, Kauffmann, Kennicutt, Lacerna, Lambas, Lambas, Lin, Mamon, Mamon, McIntosh, Merchán, Michel-Dansac, Morgan, N. Padilla, Padilla, Padilla, Padilla, Park, Patton, Pérez, Robaina, S. Alonso, Simard, Skibba, Skibba, Strauss, V. Mesa, von der Linden, Wang, Wong, Yang, York, Zapata, Zibetti, Zwicky   +64 more
core   +1 more source