Results 31 to 40 of about 232,037 (310)

MRC B0319-454: Probing the large-scale structure with a giant radio galaxy

open access: yes, 2008
We present an investigation of the relationships between the radio properties of a giant radio galaxy MRC B0319-454 and the surrounding galaxy distribution with the aim of examining the influence of intergalactic gas and gravity associated with the large-
Begelman   +51 more
core   +1 more source

THE STRUCTURE OF 2MASS GALAXY CLUSTERS [PDF]

open access: yesThe Astrophysical Journal, 2011
We use a sample of galaxies from the Two Micron All Sky Survey (2MASS) Extended Source Catalog to refine a matched filter method of finding galaxy clusters that takes into account each galaxy's position, magnitude, and redshift if available. The matched filter postulates a radial density profile, luminosity function, and line-of-sight velocity ...
Blackburne, Jeffrey A.   +1 more
openaire   +2 more sources

Scalable Automated Detection of Spiral Galaxy Arm Segments

open access: yes, 2014
Given an approximately centered image of a spiral galaxy, we describe an entirely automated method that finds, centers, and sizes the galaxy and then automatically extracts structural information about the spiral arms. For each arm segment found, we list
Davis, Darren R., Hayes, Wayne B.
core   +1 more source

Galaxy population structure from proper motions [PDF]

open access: yesSymposium - International Astronomical Union, 1985
We are currently engaged in astrometry of Kapteyn Selected Area photographic plates covering the period 1908 to the present day using the GALAXY measuring engine at RGO. Our intention is to use the apparent motions to investigate the stellar velocity structure within a kiloparsec of the Sun.
N. Reid, C. A. Murray
openaire   +1 more source

Dermoscopy of Lichen Planus Follicularis Tumidus: A Case Report With Pattern Analysis and Literature Review. [PDF]

open access: yesClin Case Rep
ABSTRACT Lichen planus follicularis tumidus (LPFT) is a rare variant of lichen planus presenting as erythematous to violaceous plaques with significant follicular involvement, most commonly in the retroauricular area. We report a case demonstrating a novel dermoscopic pattern reminiscent of a follicular galaxy, composed of variably sized comedo‐like ...
Azhari V, Saber M.
europepmc   +2 more sources

UGC 7388: a galaxy with two tidal loops

open access: yes, 2009
We present the results of spectroscopic and morphological studies of the galaxy UGC7388 with the 8.1-m Gemini North telescope. Judging by its observed characteristics, UGC7388 is a giant late-type spiral galaxy seen almost edge-on.
B. C. Whitmore   +23 more
core   +1 more source

Spectroscopic confirmation of a galaxy cluster associated with 7C1756+6520 at z=1.416 [PDF]

open access: yes, 2010
We present spectroscopic follow-up of an overdensity of galaxies photometrically selected to be at 1 ...
A. Galametz   +38 more
core   +2 more sources

Stochastic Biasing and Galaxy-Mass Density Relation in the Weakly Non-linear Regime

open access: yes, 1999
It is believed that the biasing of the galaxies plays an important role for understanding the large-scale structure of the universe. In general, the biasing of galaxy formation could be stochastic.
Chodorowski M. J., Mo H. J., Mo H. J.
core   +2 more sources

Galaxy Formation Theory [PDF]

open access: yes, 2010
We review the current theory of how galaxies form within the cosmological framework provided by the cold dark matter paradigm for structure formation. Beginning with the pre-galactic evolution of baryonic material we describe the analytical and numerical
Abadi   +563 more
core   +1 more source

Chaotic Spiral Galaxies

open access: yes, 2011
We study the role of asymptotic curves in supporting the spiral structure of a N-body model simulating a barred spiral galaxy. Chaotic orbits with initial conditions on the unstable asymptotic curves of the main unstable periodic orbits follow the shape ...
Contopoulos, George, Harsoula, Mirella
core   +1 more source

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