What type of galaxy is the Canis Major Overdensity?
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What type of galaxy is the Canis Major Overdensity?
Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is classified as an irregular galaxy and is now thought to be the closest neighboring galaxy to the Earth’s location in the Milky Way, being located about 25,000 light-years (7.7 kiloparsecs) away from the Solar System and 42,000 ly (13 kpc) from the Galactic Center.
What type of galaxy is Sagittarius dwarf galaxy?
Sagittarius Dwarf Elliptical Galaxy
The Sagittarius Dwarf Spheroidal Galaxy (Sgr dSph), also known as the Sagittarius Dwarf Elliptical Galaxy (Sgr dE or Sag DEG), is an elliptical loop-shaped satellite galaxy of the Milky Way….
| Sagittarius Dwarf Spheroidal Galaxy | |
|---|---|
| Distance | 65 ± 7 kly (20 ± 2 kpc) |
| Apparent magnitude (V) | 4.5 |
| Characteristics | |
| Type | dSph(t) |
What are the different types of dwarf galaxy?
Just like their larger cousins, dwarf galaxies can be classified into three varieties: dwarf elliptical galaxies, dwarf irregular galaxies, and dwarf spiral galaxies.
What type of galaxy is the next major galaxy?
The Andromeda Galaxy (IPA: /ænˈdrɒmɪdə/), also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula (see below), is a barred spiral galaxy approximately 2.5 million light-years (770 kiloparsecs) from Earth and the nearest large galaxy to the Milky Way.
How wide is the Canis Major dwarf galaxy?
10,000 light-years
This dwarf galaxy, which consists of four globular clusters that measure some 10,000 light-years in diameter, was discovered in 1994.
How far away is the Canis Major dwarf galaxy?
25,000 light years
Canis Major Overdensity/Distance to Earth
What is ripping apart the Sagittarius dwarf spheroidal galaxy?
“We see evidence for streams of stars connected to the core of the galaxy, and indicating that this dwarf galaxy passed multiple times around the Milky Way center and was ripped apart by the tidal gravitational field of the Milky Way.
Are there non spiral galaxies?
Galaxies that are not spiral, lenticular, or elliptical are called irregular galaxies. Irregular galaxies—such as the Large and Small Magellanic Clouds that flank our Milky Way—appear misshapen and lack a distinct form, often because they are within the gravitational influence of other galaxies close by.
What is the closest dwarf galaxy?
the Canis Major Dwarf Galaxy
The closest known galaxy to us is the Canis Major Dwarf Galaxy, at 236,000,000,000,000,000 km (25,000 light years) from the Sun. The Sagittarius Dwarf Elliptical Galaxy is the next closest , at 662,000,000,000,000,000 km (70,000 light years) from the Sun.
What are the three types of galaxies?
Types of Galaxies Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars.
Are we from Sagittarius dwarf galaxy?
We actually belong to the Sagittarius Dwarf galaxy. The Milky Way is indeed cannibalizing another, smaller galaxy. The MW is bigger, and so its gravity did rip the smaller galaxy up, turning into a long ribbon or stream of stars.
How far away is the Canis Major Dwarf Galaxy from the Milky Way?
about 42,000 light-years
The Canis Major Dwarf Galaxy lies some 25,000 light-years from Earth’s solar system and about 42,000 light-years from the centre of the Milky Way, which makes it the closest galaxy to the Milky Way found to date.