What type of galaxy is NGC 147?
dwarf spheroidal galaxy
NGC 147 (also known as DDO3 or Caldwell 17) is a dwarf spheroidal galaxy about 2.58 Mly away in the constellation Cassiopeia….
|Apparent size (V)||13′.2 × 7′.8|
|Notable features||satellite galaxy of M31|
How far away is NGC 185?
about 2 Million light-years distant
NGC 185, also known as Caldwell 18, is a dwarf spheroidal galaxy located in the southern part of Cassiopeia. It’s about 2 Million light-years distant and like neighbouring dwarf galaxy NGC 147 is a satellite of the Andromeda galaxy (M31) and therefore a member of the Local Group.
What is the Local Group part of?
The group itself is a part of the larger Virgo Supercluster, which may be a part of the Laniakea Supercluster. The exact number of galaxies in the Local Group is unknown as some are occluded by the Milky Way; however, at least 80 members are known, most of which are dwarf galaxies.
Is Andromeda a Seyfert galaxy?
NGC 185 has an active galactic nucleus (AGN) and is usually classified as a type 2 Seyfert galaxy, though its status as a Seyfert is questioned….
|Notable features||Satellite galaxy of the Andromeda Galaxy|
|UGC 396, PGC 2329, LEDA 2329, Caldwell 18|
What is the size of the Andromeda Galaxy?
110,000 light yearsAndromeda Galaxy / Radius
Why is the Milky Way flat?
Summary. As galaxies form, the collisions of objects with each other cancel their momentum in all directions except for the direction of the rotation. The stars line up around the center of rotation, creating the flat, or pancake-like shape.
What is the difference between a quasar and a AGN?
All quasars are AGN, but not all AGN are quasars. AGN is a terminology that comes later than quasars. Quasars is the term applied at the beginning, when the first objects of this type have been discovered. They were radio-loud and point-like (the so-called quasi-stellar radio sources).
What produces a quasar?
The power of quasars originates from supermassive black holes that are believed to exist at the core of most galaxies. The Doppler shifts of stars near the cores of galaxies indicate that they are revolving around tremendous masses with very steep gravity gradients, suggesting black holes.
Are dwarf galaxies elliptical?
Dwarf Elliptical galaxies appear to have many of the same global properties observed in normal elliptical galaxies, just on a smaller scale. They are elliptical in shape, contain very little or no gas, and have no evidence of recent star formation.