Results 81 to 90 of about 470,379 (288)
Scaling Relations of Spiral Galaxies [PDF]
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
Detection of CO(J=1-0) Emission from Barred Spiral Galaxies at z~0.1
We present the results of CO (J=1-0) observations towards nine barred spiral galaxies at z=0.08-0.25 using the 45-m telescope at Nobeyama Radio Observatory (NRO). This survey is the first one specialized for barred spiral galaxies in this redshift range.
Kuno, Nario+3 more
core +1 more source
The DiskMass Survey VII. The distribution of luminous and dark matter in spiral galaxies [PDF]
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
A New Statistical Analysis of the Morphology of Spiral Galaxies
Morphology 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
Compact X-ray Sources in Nearby Galaxy Nuclei [PDF]
We have found compact, near-nuclear X-ray sources in 21 (54\%) of a complete sample of 39 nearby face-on spiral and elliptical galaxies with available ROSAT HRI data. ROSAT X-ray luminosities (0.2 $-$ 2.4 keV) of these compact X-ray sources are $\sim$10$^
Briel+14 more
core +3 more sources
FUNDAMENTAL MASS–SPIN–MORPHOLOGY RELATION OF SPIRAL GALAXIES [PDF]
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
Compliant Robotics in Space: A Prospective Review of Soft and Deformable Systems for Space Missions
Compliant robots are increasingly becoming integral to space exploration due to their adaptability, flexibility, and lightweight design. This article reviews categories such as soft, reconfigurable, and hyper‐redundant robots and their evolving role in enhancing space missions.
Hamed Rahimi Nohooji, Holger Voos
wiley +1 more source
JWST Reveals a Surprisingly High Fraction of Galaxies Being Spiral-like at 0.5 ≤ z ≤ 4
Spiral 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 collective origin of spiral structures in disk galaxies
After almost fifty years the origin of spiral arms in disk galaxies remains one of the major unsolved problems in astrophysics. Recent attempts have indicated that substructures in the dark matter halos of galaxies could induce spiral patterns in disks ...
Hernquist L.+2 more
doaj +1 more source
M101: The Pinwheel Galaxy [PDF]
This Hubble Space Telescope image of M101 showcases a spiral galaxy's well-known features. The text describes the features that are common to all spiral galaxies.
core