Results 81 to 90 of about 476,460 (296)
The DiskMass Survey VII. The distribution of luminous and dark matter in spiral galaxies [PDF]
, 2013 We present dynamically-determined rotation-curve mass decompositions of 30 spiral galaxies, which were carried out to test the maximum-disk hypothesis and to quantify properties of their dark-matter halos.
T. Martinsson +5 more
semanticscholar +1 more source
Magnetic fields in spiral galaxies [PDF]
The Astronomy and Astrophysics Review, 1990 Published in A&ARev (2016) 24 ...
openaire +5 more sources
Scaling Relations of Spiral Galaxies [PDF]
The Astrophysical Journal, 2007 We construct a large data set of global structural parameters for 1300 field and cluster spiral galaxies and explore the joint distribution of luminosity L, optical rotation velocity V, and disk size R at I- and 2MASS K-bands. The I- and K-band velocity-luminosity (VL) relations have log-slopes of 0.29 and 0.27, respectively with sigma_ln(VL)~0.13, and
Courteau, Stéphane +6 more
openaire +5 more sources
A New Statistical Analysis of the Morphology of Spiral Galaxies
The Astronomical JournalMorphology is the starting point for understanding galaxies. Elmegreen et al. classified spiral galaxies into flocculent, multiple-arm, and grand-design galaxies based on the regularity of their spiral arm structure.
Junye Wei +6 more
doaj +1 more source
Nonlinear Density Wave Theory in a Gaseous Disk
The Astronomical Journal, 2023 A nonlinear solution for the gaseous component of a galactic disk has been derived self-consistently using fluid description and reductive perturbation theory. We show that gas follows a spiral pattern, similarly to the stellar component; but the spirals
Miroslava Vukcevic
doaj +1 more source
JWST Reveals a Surprisingly High Fraction of Galaxies Being Spiral-like at 0.5 ≤ z ≤ 4
The Astrophysical Journal LettersSpiral arms are one of the most important features used to classify the morphology of local galaxies. The cosmic epoch when spiral arms first appeared contains essential clues to the evolution of disk galaxies.
Vicki Kuhn +5 more
doaj +1 more source
The Open Journal of Astrophysics, 2021 Countless low-surface brightness objects - including spiral galaxies, dwarf galaxies, and noise patterns - have been detected in recent large surveys.
Oliver Müller, Eva Schnider
doaj +1 more source
FUNDAMENTAL MASS–SPIN–MORPHOLOGY RELATION OF SPIRAL GALAXIES [PDF]
, 2013 This work presents high-precision measurements of the specific baryon angular momentum jb contained in stars, atomic gas, and molecular gas, out to ≳ 10 scale radii, in 16 nearby spiral galaxies of the THINGS sample.
D. Obreschkow, K. Glazebrook
semanticscholar +1 more source
Molecular Gas in Spiral Galaxies
, 1997 In this review, I highlight a number of recent surveys of molecular gas in nearby spiral galaxies. Through such surveys, more complete observations of the distribution and kinematics of molecular gas have become available for galaxies with a wider range ...
A Boselli +50 more
core +2 more sources
Grand Design versus Multiarmed Spiral Galaxies: Dependence on Galaxy Structure
The Astronomical JournalWe developed an algorithm to use Galaxy Zoo 3D spiral arm masks produced by citizen scientist volunteers to semiautomatically classify spiral galaxies as either multiarmed or grand design spirals. Our final sample consists of 299 multiarmed and 245 grand
Beverly J. Smith +3 more
doaj +1 more source