I hope you might spend some time inspecting NGC 7331, but no doubt you will soon try to catch
Stephan's Quintet which lies about 0.5[degrees] to the south-west.
Additional heating by supernova explosions and stellar winds has also probably taken place in
Stephan's Quintet.
Caption: BONUS GALAXY Hickson Compact Group 92, more commonly known as
Stephan's Quintet, lies about 280 million light-years from Earth in the direction of Pegasus.
Locating
Stephan's Quintet is most easily accomplished by finding the much larger spiral galaxy NGC 7331, which lies northeast of the group.
Encouraged by my success with the Fleas, I turned my 4.1-inch scope toward
Stephan's Quintet. At 203x, I could spot NGC 7318A/B as a single patch of mist.
Less mysterious--but no less fascinating--is recent star formation in systems of colliding galaxies such as
Stephan's Quintet in Pegasus (S&T: November 2004, page30).
The angels in the opening scene of the movie It's a Wonderful Life are galaxies in
Stephan's Quintet, a particularly striking example of a compact group.
There's no better place to begin this exploration than
Stephan's Quintet. Conveniently situated 1/2[degrees] south-southwest of NGC 7331, a relatively bright 9.5-magnitude spiral in Pegasus,
Stephan's Quintet challenges you to resolve a clump of five faint galaxies packed into a mere 4 arc-minutes of sky.
It was discovered at Marseilles Observatory by Edouard Stephan, widely recognized for the group of galaxies that bears his name:
Stephan's Quintet (in Pegasus).
Sulentic (University of Alabama), and Richard Tuffs (Max Planck Institute for Nuclear Physics, Germany) announced that they have found an intergalactic starburst region within a grouping known as
Stephan's Quintet. (Starbursts are brief flare-ups involving the births and deaths of thousands of giant, short-lived stars.) Three of the quintet's spiral galaxies - NGC 7317, NGC 7318A, and NGC 7319 - have closely interacted and stripped each other of gas and dust, creating clouds of intergalactic material.
Let's begin our journey early in the evening with a visit to the very first compact group ever discovered,
Stephan's Quintet, also known as HCG 92.