Flashcards: Interacting galaxies

The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4 billion years between the two largest galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy, although the stars involved are sufficiently far apart that it is improbable that any of them will individually collide.

The Eyes Galaxies (NGC 4435-NGC 4438, also known as Arp 120) are a pair of galaxies about 52 million light-years away in the constellation Virgo.

Arp 299 (parts of it are also known as IC 694 and NGC 3690) is a pair of colliding galaxies approximately 134 million light-years away in the constellation Ursa Major.

NGC 4676, or the Mice Galaxies, are two spiral galaxies in the constellation Coma Berenices.

A satellite galaxy is a galaxy that orbits a larger galaxy due to gravitational attraction.

IC 167 is a barred spiral galaxy in the constellation of Aries.

The object ZW II 96 (also II Zw 96) is a pair of galaxies that are merging.

Arp 302 (also known as Exclamation Point Galaxy) is a galaxy in the constellation Boötes.

Holmberg IX is a dwarf irregular galaxy and a satellite galaxy of M81.

3C 321 is a system of two galaxies rotating around each other.

The Antennae Galaxies, also known as NGC 4038/NGC 4039, are a pair of interacting galaxies in the constellation Corvus.

A galactic tide is tidal force experienced by objects subject to the gravitational field of a galaxy such as the Milky Way.

Arp 220 is the result of a collision between two galaxies which are now in the process of merging.

Arp 104, also known as Keenan's system, is entry 104 in Halton Arp's Atlas of Peculiar Galaxies catalog for spiral galaxy NGC 5216 and globular galaxy NGC 5218.

Arp 107 is a set of galaxies about 450 million light-years away in the constellation Leo Minor.

PGC 214560 is a galaxy currently interacting with USNOA2 1125-07938327 in the Hercules constellation.