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We investigate the spatial distribution of the satellites of bright, isolated host galaxies. In agreement with previous studies, we find that, on average, the satellites of red hosts are found preferentially close to their hosts' major…

Astrophysics of Galaxies · Physics 2020-07-29 Tereasa G. Brainerd , Adam Samuels

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

The spatial distribution of satellite galaxies around pairs of galaxies in the Sloan Digital Sky Survey (SDSS) have been found to bulge significantly towards the respective partner. Highly anisotropic, planar distributions of satellite…

Astrophysics of Galaxies · Physics 2017-12-13 Marcel S. Pawlowski , Rodrigo A. Ibata , James S. Bullock

We investigate the angular distribution of satellite galaxies in and around pairs of galaxy groups in SDSS and compare the results with the satellite distribution in pairs of dark matter halos by constructing mock catalogs that account for…

Astrophysics of Galaxies · Physics 2025-09-01 Yanhan Guo , Qinglin Ma , Cheng Li

It is well known that satellite galaxies are not isotropically distributed among their host galaxies as suggested by most interpretations of the $\Lambda$CDM model. One type of anisotropy recently detected in the SDSS (and seen when…

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

The properties of satellite dwarf galaxies pose important empirical constraints to verify cosmological models on galaxy scales. Their phase-space correlations, in particular, offer interesting insights into various models. Next to the…

Astrophysics of Galaxies · Physics 2024-10-02 Nick Heesters , Helmut Jerjen , Oliver Müller , Marcel S. Pawlowski , Kosuke Jamie Kanehisa

We investigate the spatial distribution of satellite galaxies using a mock redshift survey of the first Millennium Run simulation. The satellites were identified using common redshift space criteria and the sample therefore includes a large…

Astrophysics of Galaxies · Physics 2018-06-21 Ingolfur Agustsson , Tereasa G. Brainerd

We explore the angular distribution of two samples of satellite galaxies orbiting isolated hosts extracted from the Sloan Digital Sky Survey Data Release 4. We find a clear alignment of the satellites along the major axis of their hosts…

Astrophysics · Physics 2009-10-08 Marco Azzaro , Santiago G. Patiri , Francisco Prada , Andrew R. Zentner

The distribution of smaller satellite galaxies around large central galaxies has attracted attention because peculiar spatial and kinematic configurations have been detected in some systems. A particularly striking example of such behavior…

Astrophysics of Galaxies · Physics 2016-10-26 Noam I Libeskind , Quan Guo , Elmo Tempel , Rodrigo Ibata

We investigate the locations of satellite galaxies in the z = 0 redshift slice of the hydrodynamical Illustris-1 simulation. As expected from previous work, the satellites are distributed anisotropically in the plane of the sky, with a…

Astrophysics of Galaxies · Physics 2019-08-21 Tereasa G. Brainerd , Masaya Yamamoto

We compute the locations of satellite galaxies with respect to their hosts using the Lambda-CDM GIF simulation. If the major axes of the hosts' images are perfectly aligned with the major axes of their projected mass, the satellites are…

Astrophysics · Physics 2009-11-11 Ingolfur Agustsson , Tereasa G. Brainerd

We investigate the spatial distribution of the satellites of isolated host galaxies in the TNG100 simulation. In agreement with a previous, similar analysis of the Illustris-1 simulation, the satellites are typically poor tracers of the…

Astrophysics of Galaxies · Physics 2022-07-22 Bryanne McDonough , Tereasa Brainerd

We use the fourth data release of the Sloan Digital Sky Survey to investigate the orientations of 4289 satellite galaxies with respect to their hosts. The orientation of the satellites is inconsistent with a random distribution at the…

Astrophysics · Physics 2009-11-11 Ingolfur Agustsson , Tereasa G. Brainerd

We infer the normalization and the radial and angular distributions of the number density of satellites of massive galaxies ($\log_{10}[M_{h}^*/M\odot]>10.5$) between redshifts 0.1 and 0.8 as a function of host stellar mass, redshift,…

Astrophysics of Galaxies · Physics 2015-06-04 A. M. Nierenberg , M. W. Auger , T. Treu , P. J. Marshall , C. D. Fassnacht , Michael T. Busha

Dwarf satellites in galaxy groups are distributed in an anisotropic and asymmetric manner, which is called the ``lopsided satellite distribution''. This lopsided signal has been observed not only in galaxy pairs but also in isolated…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-05 Yikai Liu , Peng Wang , Hong Guo , Volker Springel , Sownak Bose , Rüdiger Pakmor , Lars Hernquist

We identify satellites of isolated galaxies in SDSS and examine their angular distribution. Using mock catalogues generated from cosmological N-body simulations, we demonstrate that the selection criteria used to select isolated galaxies…

Astrophysics · Physics 2009-11-13 Jeremy Bailin , Chris Power , Peder Norberg , Dennis Zaritsky , Brad K. Gibson

We study the spatial distribution of faint satellites of intermediate redshift (0.1<z<0.8), early-type galaxies, selected from the GOODS fields. We combine high resolution HST images and state-of-the-art host subtraction techniques to…

Astrophysics of Galaxies · Physics 2011-03-28 A. M. Nierenberg , M. W. Auger , T. Treu , P. J. Marshall , C. D. Fassnacht

We use a volume-limited spectroscopic sample of isolated galaxies in the Sloan Digital Sky Survey (SDSS) to investigate the frequency and radial distribution of luminous (M_r <~ -18.3) satellites like the Large Magellanic Cloud (LMC) around…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Erik J. Tollerud , Michael Boylan-Kolchin , Elizabeth J. Barton , James S. Bullock , Christopher Q. Trinh

The distribution of satellite galaxies relative to isolated host galaxies in the Sloan Digital Sky Survey (SDSS) is investigated. Host-satellite systems are selected using three different methods, yielding samples of ~3300, ~1600, and \~950…

Astrophysics · Physics 2009-11-10 Tereasa G. Brainerd
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