Results 151 to 160 of about 8,619 (182)

Automation of finding strong gravitational lenses in the Kilo Degree Survey with U - DenseLens (DenseLens  + Segmentation). [PDF]

Mon Not R Astron Soc
N BC, Koopmans LVE, Valentijn EA, Kleijn GV, de Jong JTA, Napolitano N, Li R, Tortora C, Busillo V, Dong Y.   +9 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

DYNAMICS OF SPIRAL GALAXIES

Frontiers of Applied Mathematics, 2007
The dynamics of spiral galaxies is a gold-mine of challenging problems for the astrophysicist and the applied mathematician. In Astrophysics, we may ask how these island-universes formed, evolved, and reached their current structure and thus address the problems of the dynamics of the interstellar medium, of star formation, of stellar dynamics, and of ...
openaire   +2 more sources

The HI Halo of Spiral Galaxies

Astrophysics and Space Science, 2004
A deep H I survey with the VLA of the spiral galaxy NGC 2403 has revealed the existence of a thick, low density layer of neutral gas surrounding the thin 'cold' disk. This layer has a mean rotation velocity 25-50 km s(-1) lower than that of the disk and a 10-20 km s(-1) inflow towards the centre of the galaxy.
FRATERNALI, FILIPPO, T. Oosterloo, R. Sancisi   +2 more
openaire   +3 more sources

The Rotation of Spiral Galaxies

Science, 1983
There is accumulating evidence that as much as 90 percent of the mass of the universe is nonluminous and is clumped, halo-like, around individual galaxies. The gravitational force of this dark matter is presumed to be responsible for the high rotational velocities of stars and gas in the disks of spiral galaxies.
openaire   +2 more sources

Spirals in galaxies

Proceedings of the International Astronomical Union, 2019
AbstractThe venerable problem of what causes the spiral features in disk galaxies is nearing a solution. In previous work, we have shown that transient spirals in simulations result from the superposition of a few coherent waves that have many properties of modes.
openaire   +1 more source

Dark matter in spiral galaxies

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1986
Abstract Mass models of spiral galaxies based on the observed light distribution, assuming constant M /L for bulge and disc, are able to reproduce the observed rotation curves in the inner regions, but fail to do so increasingly towards and beyond the edge of the visible material.
VANALBADA, TS, SANCISI, R
openaire   +2 more sources

Are There Jets in Spiral Galaxies?

1983
The absence in spiral galaxies of large-scale collimated jets of radio emission is still little understood. Collimated emission in elliptical galaxies in some cases exceeds by far the optical extent of the galaxy (e.g. in NGC6251). Westerbork observations of NGC4258 (van der Kruit, Oort and Mathewson, 1972) and NGC3079 (de Bruyn, 1977) have provided ...
C. Kotanyi, E. Hummel, J. van Gorkom
openaire   +1 more source

Comparison of the Galaxy with External Spiral Galaxies

1987
In this chapter some areas of comparative exploration in our and external galaxies are reviewed and discussed. Photometric parameters for the Galaxy are derived. The radial scalelength is 5.0 ± 0.5 kpc, and this makes our Galaxy (and M31) unusually large unless Ho = 65 ± 10 km s−1 Mpc−1. Surface photometry of external edge-on galaxies, in particular of
openaire   +1 more source

Experimental study on the heat transfer characteristics of supercritical carbon dioxide in spiral tube with high pitch to spiral diameter ratio

International Journal of Heat and Mass Transfer, 2023
Yong-Le Nian, Wenlong Cheng
exaly  

Formation of a spiral galaxy

ACM SIGGRAPH 2007 computer animation festival, 2007
openaire   +1 more source