John E. Beckman

TL;DR: A review of observations and models of the diffuse ionized gas that permeates the disk and halo of our Galaxy and others was presented during an afternoon scientific session of the 65th birthday celebration for Professor Carl Heiles held at Arecibo Observatory in August 2004 as mentioned in this paper.

TL;DR: In this paper, the radial brightness profiles of a number of barred S0-Sb galaxies with the opposite behavior are presented; their outer profiles are distinctly shallower in slope than the main disk profile.

TL;DR: In this article, the radial brightness profiles of a number of barred S0-Sb galaxies with the opposite behavior are presented, suggesting that a disk embedded within a more spheroidal outer zone.

TL;DR: In this article, a large sample of nearby galaxies is used to quantify the star formation activity in the local Universe, which consists of 334 galaxies across all Hubble types from S 0/a to Im and with recession velocities of between 0 and 3000 km s 1.

TL;DR: The role of magnetic fields in the evolution of galaxies is discussed in this paper, where the authors propose a theory of star formation in the early evolution of the galaxy and show that magnetic fields play an important role in the formation of galaxies.