Monday, March 16, 2009

Galaxies Collide to Create Hot, Huge Galaxy

Monday, March 16, 2009
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Galaxies Collide to Create Hot, Huge Galaxy


This image of a pair of colliding galaxies called NGC 6240 shows them in a rare, short-lived phase of their evolution just before they merge into a single, larger galaxy. The prolonged, violent collision has drastically altered the appearance of both galaxies and created huge amounts of heat -- turning NGC 6240 into an "infrared luminous" active galaxy.

A rich variety of active galaxies, with different shapes, luminosities and radiation profiles exist. These galaxies may be related -- astronomers have suspected that they may represent an evolutionary sequence. By catching different galaxies in different stages of merging, a story emerges as one type of active galaxy changes into another. NGC 6240 provides an important "missing link" in this process.

This image was created from combined data from the infrared array camera of NASA's Spitzer Space Telescope at 3.6 and 8.0 microns (red) and visible light from NASA's Hubble Space Telescope (green and blue).


About the Object (1)
Object name:NGC 6240
Object type:Galaxy
Position (J2000):RA: 16h 52m 58.97s Dec: 2° 24' 1.70"
Distance:400,000,000 Light Years
Constellation:Ophiuchus
About the Data
Spitzer Data
Image Credit:NASA/JPL-Caltech/STScI-ESA
Instrument:IRAC
Wavelength:3.6 and 8.0 microns (red), visible light (green and blue)
Release Date:2009/03/16

Additional Info
Press Release: Hearts of Galaxies Close in for Cosmic Train Wreck

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