Search results
Results from the WOW.Com Content Network
A ring galaxy is a galaxy with a circle-like appearance. Hoag's Object, discovered by Arthur Hoag in 1950, is an example of a ring galaxy. [1] The ring contains many massive, relatively young blue stars, which are extremely bright. The central region contains relatively little luminous matter. Some astronomers believe that ring galaxies are ...
The cartwheel galaxy, galaxy pair AM 2026-424, and Arp 147 are all examples of ring galaxies believed to be formed from this process. In pass-through galactic collisions, an often smaller galaxy will pass through the disc of an often larger spiral, causing an outward push of the arms, as if dropping a rock into a pond of still water.
The ring structure is so perfect and circular that it has been referred to as "The most perfect ring galaxy". [7] The diameter of the 6 arcsecond inner core of the galaxy is about 17 ± 0.7 kly ( 5.3 ± 0.2 kpc ) while the surrounding ring has an inner 28″ diameter of 75 ± 3 kly ( 24.8 ± 1.1 kpc ) and an outer 45″ diameter of 121 ± 4 kly ...
Pages in category "Ring galaxies" The following 56 pages are in this category, out of 56 total. ... Cartwheel Galaxy; E. ESO 198-13; ESO 269-57; H. Hoag's Object; I ...
The Cartwheel Galaxy (also known as ESO 350-40 or PGC 2248) is a lenticular ring galaxy about 500 million light-years away in the constellation Sculptor. [1] It has a D 25 isophotal diameter of 44.23 kiloparsecs (144,300 light-years), and a mass of about 2.9–4.8 × 10 9 solar masses ; its outer ring has a circular velocity of 217 km/s .
This is named after Art Hoag, who discovered this ring galaxy. [citation needed] It is of the subtype Hoag-type galaxy, and may in fact be a polar-ring galaxy with the ring in the plane of rotation of the central object. [citation needed] Knife Edge Galaxy: Draco: Named after its thin shape, similar to knife's edge. [citation needed] Large ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
NGC 1291, also known as NGC 1269, [4] is a ring galaxy with an unusual inner bar and outer ring structure located about 33 million light-years away in the constellation Eridanus. [1] It was discovered by James Dunlop in 1826 and subsequently entered into the New General Catalogue as NGC 1291 by Johan Ludvig Emil Dreyer .