The Hubble Space Telescope sees the magnificent result of the fusion of galaxies | Astronomy



Astronomers using the NASA / ESA Hubble Space Telescope have captured a striking photo of the peculiar SDSS galaxy J225506.80 + 005839.9.

This Hubble image shows a galaxy called SDSS J225506.80 + 005839.9 (visible in the middle right part of the image).  Image Credit: NASA / ESA / Hubble / A. Zabludoff.

This Hubble image shows a galaxy called SDSS J225506.80 + 005839.9 (visible in the middle right part of the image). Image Credit: NASA / ESA / Hubble / A. Zabludoff.

SDSS J225506.80 + 005839.9 (J2255 for short) is located in the northern constellation of Pisces.

Also known as LEDA 1180817, the galaxy is the result of an ancient cosmic fusion between two galaxies.

“J2255 is a post-starburst galaxy, which is a product of galaxies that have merged over the past billion years,” Hubble astronomers said.

“This fusion event drove gas towards the center of the galaxy and created an abundance of new stars, the brightest of which are visible in the core of the remaining galaxy.

“The visible shells and tails surrounding galaxies are also the result of this fusion event.”

“Residing far beyond our own Milky Way galaxy, it is nearly impossible to glimpse this galaxy without the help of Hubble, and, like thousands of similar pale and very distant galaxies, it has only been discovered. and cataloged only in recent years, ”they added.

“Millions of galaxies still await our discovery as we build a wonderful picture of our night sky.”

The color image of the J2255 consists of observations from Hubble’s Wide Field Camera 3 (WFC3) in the optical part of the spectrum.

Two filters – the blue filter F438W and the red filter F625W – were used to sample different wavelengths.

Color results from assigning different tints to each monochromatic image associated with an individual filter.


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