Results 31 to 40 of about 229,539 (270)
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
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Scalable Automated Detection of Spiral Galaxy Arm Segments
, 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.
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Unravelling the origin of large-scale magnetic fields in galaxy clusters and beyond through Faraday Rotation Measures with the SKA [PDF]
, 2014 We investigate the possibility for the SKA to detect and study the magnetic fields in galaxy clusters and in the less dense environments surrounding them using Faraday Rotation Measures.
Akahori, T. +16 more
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THE STRUCTURE OF 2MASS GALAXY CLUSTERS [PDF]
The 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
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UGC 7388: a galaxy with two tidal loops
, 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
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A New Einstein Cross: A Highly Magnified, Intrinsically Faint Lyman-Alpha Emitter at z=2.7 [PDF]
, 2006 We report the discovery of a new Einstein cross at redshift z_S = 2.701 based on Lyman-alpha emission in a cruciform configuration around an SDSS luminous red galaxy (z_L = 0.331). The system was targeted as a possible lens based on an anomalous emission
Adam S. Bolton +9 more
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Galaxy population structure from proper motions [PDF]
Symposium - 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
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Crawling the Cosmic Network: Exploring the Morphology of Structure in the Galaxy Distribution [PDF]
, 2010 Although coherent large-scale structures such as filaments and walls are apparent to the eye in galaxy redshift surveys, they have so far proven difficult to characterize with computer algorithms. This paper presents a procedure that uses the eigenvalues
Abazajian +54 more
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Stochastic Biasing and Galaxy-Mass Density Relation in the Weakly Non-linear Regime
, 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.
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Spiral Structure of Our Galaxy and of Other Galaxies [PDF]
Symposium - International Astronomical Union, 1970 Time and again Dr. B. Bok publishes his reviews on the state of optical searches of the spiral arms in our Galaxy. A great optimist at the beginning, concerning the agreement of different results, he became later more critical in his conclusions. But in his paper of 1967 he claims anew, as well established, that we can trace the spiral arms up to a ...
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