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Astr110 Photography Projects, Spring 2010

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The Mice Galaxies, William Morrison

The Mice Galaxies

This image is of the Mice Galaxies. The two galaxies are slowly colliding and will collide many more times and eventually become one big galaxy. The name refers to the two long tail-like arms that are the result of the gravitational pull between them. They were originally discovered in 2002 by the Hubble Space Telescope and are about 300 million light years away in the Coma Cluster.

The galaxies are in the upper right of the picture and the big star that appears in the center is GSC 2531. The tails on the galaxies are a bit difficult to see, especially on the lower galaxy. The angular size is (0.87x3.95) in arc minutes. The linear size is roughly (76,000x340,000) light years. The galaxies are roughly 300 million light years away and are a part of the Coma Cluster.

References:
Newman, Phillip"When Mice Collide."NASA. <http://antwrp.gsfc.nasa.gov/apod/ap090426.html>.

"The Mice." Hubble Information Center. <http://www.spacetelescope.org/images/html/heic0206b.html>

Right Ascension (J2000) 12:46:38
Declination (J2000) +30:40:22
Filters used blue(B), green(V), red(R), and clear(C)
Exposure time per filter 5x60 seconds in C, 300 seconds in BVR

Date and time observed

March 3, 2010 (C)
March 3, 2010 (BVR)

12:19 A.M.