Results 131 to 140 of about 144,718 (240)

Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]

open access: yesNature, 2023
Geach JE   +7 more
europepmc   +1 more source

The spiral arms of galaxies

open access: yes, 2022
The most important theory of the spiral arms of galaxies is the density wave theory based on the Lin-Shu dispersion relation. However, the density waves move with the group velocity towards the inner Lindblad resonance and tend to disappear. Various mechanisms to replenish the spiral waves have been proposed.
openaire   +2 more sources

Analysis of the Internal Radial Gradient of Chemical Abundances in Spiral Galaxies from CALIFA

open access: yesThe Astrophysical Journal
The study of chemical evolution is of paramount importance for understanding the evolution of galaxies. Models and observations propose an inside-out mechanism in the formation of spiral galaxy disks, implying a negative radial gradient of elemental ...
A. F. S. Cardoso   +3 more
doaj   +1 more source

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