Fig11_10 tycho supernova remnant

Fig11_10 tycho supernova remnant

Fig. 11.10 . The expanding remains from a Type Ia supernova that occurred in 1572. It is named after the Danish astronomer Tycho Brahe (1546-1601)) who recorded observations of its brightness in that year. The circular supernova remnant is located at a distance of about 13,000 light-years and is about 20 light-years across. It is bounded by an expanding shock wave, and consists of ejected material moving away from the explosion and the interstellar material it sweeps up and heats along the way. The explosion has left a hot cloud of expanding debris (green and yellow). The location of the blastís outer shock wave is seen as a blue sphere of very energetic electrons. Newly synthesized dust in the ejected material and heated pre-existing dust from the area radiate at infrared wavelengths (red). Foreground and background stars in the image are white. This image is a composite of an x-ray image (blue, green and yellow) taken from the Chandra X-ray Observatory, an infrared image (red) taken from the Spitzer Space Telescope, and a visible light image (white) taken with the 3.5-m (138-inch) Calar Alto telescope located in southern Spain. (Courtesy of MPIA/NASA/Calar Alto Observatory.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University