Image: Hubble stirs up galactic soup

Aug 25, 2014
Credit: ESA/Hubble & NASA Acknowledgement: Judy Schmidt

(Phys.org) —This new NASA/ESA Hubble Space Telescope image shows a whole host of colorful and differently shaped galaxies; some bright and nearby, some fuzzy, and some so far from us they appear as small specks in the background sky. Together they appear as kind of galactic soup.

The most prominent characters are the two galaxies on the left—2MASX J16133219+5103436 at the bottom, and its blue-tinted companion SDSS J161330.18+510335 at the top. The latter is slightly closer to us than its partner, but the two are still near enough to one another to interact. Together, the two make up a galactic pair named Zw I 136.

Both galaxies in this pair have disturbed shapes and extended soft halos. They don't seem to conform to our view of a "typical" galaxy—unlike the third bright object in this frame, a side-on spiral seen towards the right of the image.

Astronomers classify galaxies according to their appearance and their shape. The most famous classification scheme is known as the Hubble sequence, devised by its namesake Edwin Hubble. One of the great questions in galaxy evolution is how interactions between trigger waves of star formation, and why these stars then abruptly stop forming. Interacting pairs like this one present astronomers with perfect opportunities to investigate this.

Explore further: Image: Hubble sees starbursts in the wake of a fleeting romance

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Psilly_T
3 / 5 (2) Aug 25, 2014
Holly crap that looks insanely twisted! The bottom red galaxy is still maintaining its spiral structure(for now?) the blue galaxy is ... is what?! help me out whats going on here. Is it's core being tugged out of itself into the bottom half or is this a "smooth" transition? They're halo's are huge and prominent, they seem to just pop out way more than that third galaxy, which wasn't really mentioned. Is this an elliptical merger where one of the cores is substantially smaller than the other? Why is the top galaxy so blue compared to the red? Aren't they both interacting and experiencing star birth? Awesome picture. Troll if u want but please be nice to each other. -.-

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