Girish Mahajan

AM 0644 741

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Right ascension  6 43 6.1
Redshift  6604 ± 26 km/s
Type  (S0-) + Ring
Magnitude  13.96
Apparent magnitude (V)  13.96
Declination  −74° 13′ 35″
Distance  300 Mly
Apparent size (V)  1′.7
Constellation  Volans
AM 0644-741 heritagestsciedu200415AM0644s0415bwjpg
Similar  Mice Galaxies, NGC 3370, Hoag's Object, NGC 2442/2443, NGC 3982

Am 0644 741 unbarred lenticular galaxy zoom animation of


AM 0644-741, also known as the Lindsay-Shapley Ring, is an unbarred lenticular galaxy, and a ring galaxy, which is 300 million light-years away in the direction of the southern constellation Volans. The yellowish nucleus was once the center of a normal spiral galaxy, and the ring which currently surrounds the center is 150,000 light-year diameter. The ring is theorized to have formed by a collision with another galaxy, which triggered a gravitational disruption that caused dust in the galaxy to condense and form stars, which forced it to then expand away from the galaxy and create a ring. The ring is a region of rampant star formation dominated by young, massive, hot blue stars. The pink regions along the ring are rarefied clouds of glowing hydrogen gas that is fluorescing as it is bombarded with strong ultraviolet light from the blue stars. Galactic simulation models suggest that the ring of AM 0644-741 will continue to expand for about another 300 million years, after which it will begin to disintegrate.

Contents

2015 4 19 am 0644 741 astronomy picture of the day


References

AM 0644-741 Wikipedia


Similar Topics
Hoag's Object
Mice Galaxies
NGC 3370
Topics