Polar-ring Galaxy NGC 660 (Johnny Qiu)

Celestial hemisphere: Northern · Constellation: Pisces (Psc) · Contains: NGC 660 · PGC 1432001 · PGC 1432913 · PGC 1433323 · PGC 1433543 · PGC 1436430 · PGC 6318 · PGC 6364

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Polar-ring Galaxy NGC 660

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Polar-ring Galaxy NGC 660

Located about 45 million light-years from Earth in the constellation Pisces, NGC 660 is a unique and peculiar polar-ring galaxy. Polar-ring galaxies are galaxies with outer rings of stars and gas passing through the polar regions. These rings passing through the polar regions are thought to have formed after an interaction between two galaxies. NGC 660 may have formed after a collision between two galaxies about a billion years ago, or it may have originally been a disk galaxy that captured material from another galaxy passing by, which may have been stretched into a rotating ring over time. The ring is not actually completely polar, but is tilted about 45 degrees to the plane of the parent disk. The large pink star-forming regions in the galaxy's ring may be the result of gravitational interactions caused by this collision. At 50,000 light-years in diameter, the ring is much wider than the disk itself and has more gas and star-forming activity than the parent disk. This may indicate a very violent origin. The polar ring contains hundreds of objects, many of which are red and blue supergiants. The most recently formed stars in the ring are about 7 million years old, suggesting that the formation of these stars was an ongoing, long-term process that is still ongoing.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
PixInsight job	045WVIIK98KFF5MC9N7A49289G9HUWW5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h43m01s.929
RA (top/left)	01h44m11s.378
RA (top/right)	01h41m52s.685
RA (bottom/right)	01h41m52s.700
RA (bottom/left)	01h44m11s.163

Dec (center)	+13°38′45″.87
Dec (top/left)	+13°49′57″.95
Dec (top/right)	+13°49′57″.70
Dec (bottom/right)	+13°27′31″.35
Dec (bottom/left)	+13°27′33″.39

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Polar-ring Galaxy NGC 660

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