WebStellar halos and thick disks around edge-on spiral galaxies IC 2233 ... ... Context: http://astronomy.nmsu.edu/nicole/teaching/ASTR505/lectures/lecture26/slide01.html

which feature is used to classify galaxies?

WebWhat do the letters a,b and c indicate in reference to spiral galaxies? "A" the arms are close together. "B" the arms are average distance apart. "C" the arms are far apart. What do the numbers represent in the classification of elliptical galaxies? "0" is more rounded the higher the number the more stretched out or elongated the galaxy becomes. WebElliptical and Irregular galaxies. The majority of galaxies show no spiral features, nor are they flattened disks; they take the form of ellipsoids. They show only small evidence for young stars, dust or gas. They are very … canon ink replenishment program

26.2: Types of Galaxies - Physics LibreTexts

WebThis implies the presence of old stellar populations, which are typical found in elliptical galaxies and in the bulges of spiral galaxies. Key features include the Calcium H and K lines (found at 3934A and 3969A), the G-band (4304A), and Magnesium (5175A) and Sodium ... from the disks of spiral galaxies and from irregular galaxies. WebIrregular Galaxies. The Hubble Space Telescope captured this image of NGC 5264, an irregular dwarf ... Some scientists theorize that some large irregular galaxies could represent an intermediate step between spiral and elliptical galaxies. Irregular galaxies born from galaxy interactions or collisions typically host a mix of older and younger ... WebNeutral hydrogen (H I) was first detected in galaxies in 1953 by Kerr and coworkers in the 21-cm (1420.40575 MHz) radio emission line. Since then it has been found that almost … flagship lounge aa