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The alignment between satellites and central galaxies has been studied in detail both in observational and theoretical works. The widely accepted fact is that the satellites preferentially reside along the major axis of their central…

Astrophysics of Galaxies · Physics 2018-06-13 Peng Wang , Yu Luo , Xi Kang , Noam I. Libeskind , Lei Wang , Youcai Zhang , Elmo Tempel , Quan Guo

Observations have shown that the spatial distribution of satellite galaxies is not random, but rather is aligned with the major axes of central galaxies (CGs). The strength of the alignment is dependent on the properties of both the…

Cosmology and Nongalactic Astrophysics · Physics 2014-08-08 Xuce Dong , Weipeng Lin , Xi Kang , Yang O. Wang , Aaron A. Dutton , Andrea V. Macciò

Observations indicate that central galaxies show a significant alignment of their main shape axes with other galaxies in their group, as well as with the large-scale structure of the universe. Simulations have corroborated this finding,…

Recent studies have shown that the distribution of satellite galaxies is preferentially aligned with the major axis of their central galaxy. The strength of this alignment has been found to depend strongly on the colours of the satellite…

Astrophysics · Physics 2008-11-26 X. Kang , Frank C. van den Bosch , Xiaohu Yang , Shude Mao , H. J. Mo , Cheng Li , Y. P. Jing

After extensively explored, broad agreement between observations and theories has been reached that satellites are preferentially aligned with major axes of their host centrals. There are still some issues unsolved on this topic. In this…

Astrophysics of Galaxies · Physics 2020-04-29 Lin Tang , Weipeng Lin , Yang Wang

Galaxies are not randomly distributed across the universe but showing different kinds of alignment on different scales. On small scales satellite galaxies have a tendency to distribute along the major axis of the central galaxy, with…

Cosmology and Nongalactic Astrophysics · Physics 2014-10-17 X. Kang , W. P. Lin , Y. O. Wang , A. Dutton , A. Macciò

The accretion of satellites onto central galaxies along vast cosmic filaments is an apparent outcome of the anisotropic collapse of structure in our Universe. Numerical work (based on gravitational dynamics of N-body simulations) indicates…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 E. Tempel , Q. Guo , R. Kipper , N. I. Libeskind

We employ several galaxy formation models, in particular, L-GALAXIES, IllustrisTNG, and EAGLE, as well as observational samples from SDSS and DESI, to investigate galactic conformity, the observed large-scale correlation between the…

Astrophysics of Galaxies · Physics 2022-12-21 Mohammadreza Ayromlou , Guinevere Kauffmann , Abhijeet Anand , Simon D. M. White

The spatial distribution of the satellite populations of the Milky Way and Andromeda are puzzling in that they are nearly perpendicular to the disks of their central galaxies. To understand the origin of such configurations we study the…

Astrophysics of Galaxies · Physics 2016-07-21 Shi Shao , Marius Cautun , Carlos S. Frenk , Liang Gao , Robert A. Crain , Matthieu Schaller , Joop Schaye , Tom Theuns

Satellites are not randomly distributed around their central galaxies but show polar and planar structures. In this paper, we investigate the axis-asymmetry or lopsidedness of satellite galaxy distributions around isolated galaxies in a…

Astrophysics of Galaxies · Physics 2021-06-30 Peng Wang , Noam I. Libeskind , Marcel S. Pawlowski , Xi Kang , Wei Wang , Quan Guo , Elmo Tempel

We present predictions for the galaxy-galaxy lensing profile from the EAGLE hydrodynamical cosmological simulation at redshift z=0.18, in the spatial range 0.02 < R/(Mpc/h) < 2, and for five logarithmically equi-spaced stellar mass bins in…

As demonstrated in Paper I, the quenching properties of central and satellite galaxies are quite similar as long as both stellar mass and halo mass are controlled. Here we extend the analysis to the size and bulge-to-total light ratio (B/T)…

Astrophysics of Galaxies · Physics 2020-02-05 Enci Wang , Huiyuan Wang , Houjun Mo , Frank C. van den Bosch , Xiaohu Yang

Using a sample of galaxy groups found in the Sloan Digital Sky Survey Data Release 4, we measure the following four types of alignment signals: (1) the alignment between the distributions of the satellites of each group relative to the…

Astrophysics · Physics 2009-09-28 Yougang Wang , Changbom Park , Xiaohu Yang , Yun-Young Choi , Xuelei Chen

Internal feedback from massive stars and active galactic nuclei (AGN) play a key role in galaxy evolution, but external environmental effects can also strongly influence galaxies. We investigate the impact of environment on galaxy…

We use galaxy groups selected from the Sloan Digital Sky Survey to examine the alignment between the orientation of the central galaxy (defined as the brightest group member) and the distribution of satellite galaxies. By construction, we…

Using the cosmological hydrodynamics simulation Horizon-AGN, we investigate the spatial distribution of satellite galaxies relative to their central counterpart in the redshift range between 0.3 and 0.8. We find that, on average, these…

Astrophysics of Galaxies · Physics 2022-03-23 Charlotte Welker , Yohan Dubois , Christophe Pichon , Julien Devriendt , Elisa Nora Chisari

We use a volume-limited galaxy sample from the SDSS Data Release 7 to explore the dependence of galactic conformity on the large-scale environment, measured on $\sim$ 4 Mpc scales. We find that the star formation activity of neighbour…

Astrophysics of Galaxies · Physics 2018-04-04 Shuangpeng Sun , Qi Guo , Lan Wang , Jie Wang , Liang Gao , Cedric G. Lacey , Jun Pan

Galaxies evolve within the intricate geometry of the cosmic web, yet the distinct roles of its primary components - nodes and filaments remain incompletely understood. Using the EAGLE cosmological hydrodynamical simulation, we investigate…

Astrophysics of Galaxies · Physics 2026-02-25 Suman Sarkar , Biswajit Pandey , Apashanka Das

We study the role of environment in the evolution of central and satellite galaxies with the Sloan Digital Sky Survey. We begin by studying the size-mass relation, replicating previous studies, which showed no difference between the sizes…

Astrophysics of Galaxies · Physics 2017-02-20 Ashley Spindler , David Wake

We study the origin of misalignments between the stellar and star-forming gas components of simulated galaxies in the EAGLE simulations. We focus on galaxies with stellar masses $\geq 10^9$ M$_\odot$ at 0$\leq$z$\leq$1. We compare the…

Astrophysics of Galaxies · Physics 2024-05-07 Catalina I. Casanueva , Claudia del P. Lagos , Nelson D. Padilla , Thomas A. Davison
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