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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

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 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 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

The planar distributions of satellite galaxies around the Milky Way and Andromeda have been extensively studied as potential challenges to the standard cosmological model. Using the Sloan Digital Sky Survey and the Millennium simulation we…

Astrophysics of Galaxies · Physics 2022-06-15 Qing Gu , Qi Guo , Tianchi Zhang , Marius Cautun , Cedric Lacey , Carlos S. Frenk , Shi Shao

We investigate the angular and kinematic distributions of satellite galaxies around a large sample of bright isolated primaries in the spectroscopic and photometric catalogues of the Sloan Digital Sky Survey (SDSS). We detect significant…

Astrophysics of Galaxies · Physics 2015-04-14 Marius Cautun , Wenting Wang , Carlos S. Frenk , Till Sawala

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 use the Sloan Digital Sky Survey (SDSS) spectroscopic sample to constrain the projected radial distribution of satellites around isolated ~ L* galaxies. We employ mock galaxy catalogs derived from high-resolution cosmological simulations…

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 examine a possible connection between the anisotropic distribution of satellite galaxies around giant spiral galaxies and the evolution of satellite systems. The observed polar anisotropy (Zaritsky et al.1997) is either imprinted by…

Astrophysics · Physics 2009-10-31 Dennis Zaritsky , Anthony H. Gonzalez

We identify, categorize, and quantify alignment effects among host and satellite galaxies using a spectroscopically-confirmed, low-redshift (z<0.23) galaxy sample from the Sloan Digital Sky Survey Data Release 6. Consistent with other…

Astrophysics of Galaxies · Physics 2009-03-16 R. J. Siverd , B. S. Ryden , B. S. Gaudi

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 compute the locations of satellite galaxies in the Two-Degree Field Galaxy Redshift Survey using two sets of selection criteria and three sources of photometric data. Using the SuperCOSMOS r_F photometry, we find that the satellites are…

Cosmology and Nongalactic Astrophysics · Physics 2011-10-28 Ingolfur Agustsson , Tereasa G. Brainerd

We investigate the locations of the satellites of relatively isolated host galaxies in the Sloan Digital Sky Survey and the Millennium Run simulation. Provided we use two distinct prescriptions to embed luminous galaxies within the…

Astrophysics · Physics 2010-01-21 Ingolfur Agustsson , Tereasa G. Brainerd

We find that satellites of isolated disk galaxies at projected radii between 300 and 500 kpc are distributed asymmetrically about the parent galaxy and aligned preferentially with the disk minor axis. The dynamical timescale at these radii…

Astrophysics · Physics 2009-07-28 Dennis Zaritsky , Rodney Smith , Carlos S. Frenk , Simon D. M. White

We study the alignments of satellite galaxies, and their anisotropic distribution, with respect to location and orientation of their host central galaxy in MassiveBlack-II and IllustrisTNG simulations. We find that: the shape of the…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-03 Ananth Tenneti , Thomas D. Kitching , Benjamin Joachimi , Tiziana Di Matteo

We present, using a novel technique, a study of the angular distribution of satellite galaxies around a sample of isolated, blue host galaxies selected from the sixth data release of the Sloan Digital Sky Survey. As a complement to previous…

Astrophysics · Physics 2008-11-26 Jason H. Steffen , Octavio Valenzuela

It is sometimes argued that the uneven sky coverage of the Sloan Digital Sky Survey (SDSS) biases the distribution of satellite galaxies discovered by it to align with the polar plane defined by the 11 brighter, classical Milky Way (MW)…

Astrophysics of Galaxies · Physics 2015-12-23 Marcel S. Pawlowski

The Milky Way's satellite galaxies and Globular Clusters (GCs) are known to exhibit an anisotropic spatial distribution. We examine in detail this anisotropy by the means of the inertia tensor. We estimate the statistical significance of…

Astrophysics of Galaxies · Physics 2018-08-29 N. R. Arakelyan , S. V. Pilipenko , N. I. Libeskind

A recent observational study found that the projected spatial distributions of the satellites of bright, isolated host galaxies tend to be lopsided with respect to the locations of the hosts. Here, we examine the spatial distributions of…

Astrophysics of Galaxies · Physics 2023-04-26 Adam Samuels , Tereasa G. Brainerd
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