Results 21 to 30 of about 232,037 (310)
Analytical Approximations to Galaxy Clustering [PDF]
, 1997 We discuss some recent progress in constructing analytic approximations to the galaxy clustering. We show that successful models can be constructed for the clustering of both dark matter and dark matter haloes.
AJS Hamilton +12 more
core +3 more sources
A galaxy-halo model of large-scale structure [PDF]
, 2005 We present a new, galaxy-halo model of large-scale structure, in which the galaxies entering a given sample are the fundamental objects. Haloes attach to galaxies, in contrast to the standard halo model, in which galaxies attach to haloes.
Andrew J. S. Hamilton +31 more
core +3 more sources
Dynamics of the Spiral-Arm Corotation and Its Observable Footprints in the Solar Neighborhood
Frontiers in Astronomy and Space Sciences, 2021 This article discusses the effects of the spiral-arm corotation on the stellar dynamics in the Solar Neighborhood (SN). All our results presented here rely on: (1) observational evidence that the Sun lies near the corotation circle, where stars rotate ...
Douglas A. Barros +4 more
doaj +1 more source
Spiral structure in external galaxies [PDF]
Symposium - International Astronomical Union, 1970 The need for observing at least four different categories of optical objects for a satisfactory definition of optical spiral structure is emphasized. A sequence of optical form-types for the description of spiral structure is outlined. A pronounced difference in the nature of the spiral structure of the outer and inner parts of Messier 33 is ...
openaire +1 more source
Translators of Galaxy Morphology Indicators between Observation and Simulation
The Astrophysical Journal, 2023 Based on the recent advancements in numerical simulations of galaxy formation, we anticipate the achievement of realistic models of galaxies in the near future.
J. K. Jang +11 more
doaj +1 more source
A new (2+1)D cluster finding algorithm based on photometric redshifts: large scale structure in the Chandra Deep Field South [PDF]
, 2006 Aims: We study galaxy clustering and explore the dependence of galaxy properties on the the environment up to a redshift z~1, on the basis of a deep multi-band survey in the Chandra Deep Field South.
A. Fontana +46 more
core +3 more sources
The Astrophysical Journal, 2023 We introduce a two-particle correlation function (2PCF) for the Milky Way, constructed to probe spatial correlations in the orthogonal directions of the stellar disk in the Galactic cylindrical coordinates of R , ϕ , and z . We use this new tool to probe
Austin Hinkel +2 more
doaj +1 more source
THE ALIGNMENT OF GALAXY STRUCTURES
The Astrophysical Journal, 2015 We analyzed the orientation of the sample of ACO galaxy clusters. We examined the alignment in a subsample of 1056 galaxy structures taken from the Panko–Flin (2006) Catalog with known BM morphological types. We were looking for a correlation between the orientation of the cluster and the positions of neighboring clusters.
M. Biernacka +4 more
openaire +1 more source
The Spiral Structure in the Solar Neighborhood
Frontiers in Astronomy and Space Sciences, 2021 The spiral structure in the solar neighborhood is an important issue in astronomy. In the past few years, there has been significant progress in observation. The distances for a large number of good spiral tracers, i.e., giant molecular clouds, high-mass
L. G. Hou
doaj +1 more source
The Thick Disk in the Galaxy NGC 4244 from S^4G Imaging [PDF]
, 2010 If thick disks are ubiquitous and a natural product of disk galaxy formation and/or evolution processes, all undisturbed galaxies that have evolved during a significant fraction of a Hubble time should have a thick disk. The late-type spiral galaxy NGC
Athanassoula, E. +18 more
core +9 more sources