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Astr111 Photography Projects, Fall 2005

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Deer lick Group, Beth Huizinga

Deerlick Group

This object is NGC 7331, or also known as the Deer Lick Group Galaxy. Deer Lick Group is classified as a spiral galaxy, which means that it is a galaxy composed of large number of stars which have spiral arms and a large central galactic bulge. The spiral arms are formed around the central bulge and continue in a spiral motion. This galaxy was found in 1784 by William Herschel. This galaxy is called the Deer Lick because it was found near the Deer Lick Gap,just around the Blue Ridge Parkway in North Carolina. It is considered one of the brightest galaxies noted.

The Deer Lick group is seen very easily in the picture above. The spiral arms are circling around the large, bright bulge in the center of the galaxy. The thin white around the bulge in the group is the dust that has been emitted from the spiral arms. Because the picture was taken in black and white, the dust around the arms and the bulge can be seen more clearly. The Deer Lick Group galaxy is not the only item in this picture. There are also other galaxies seen in this picture. They are not nearly as clearly pictured as the Deer Lick Group, but they show the spiral arms around the central bulge. There are also stars in this picture, and they are different than the galaxy because the stars have the points going through the star, and also stars do not have the arms or dust that goes around the galaxies. The Deer Lick Group galaxy is approximately 46 million light years away. There is also a radius of about 32,000 light years, so it is only visible a telescope. The angular size of the Deer Lick Group is 214.285 arc seconds with a linear size of 47788.57 light years.

 

References:
http://www.calvin.edu/academic/phys/observatory/images/Astr212.Fall2002/NGC7331/

http://www.clifty.com/scott/DSO/7331.html

Frommert, Hartmut. http://www.seds.org/messier/xtra/ngc/n7331.html

Right Ascension (J2000) 22:37
Declination (J2000) 34
Filters used Clear (C)
Exposure time per filter 4x300Sec in C.
Date observed

October 19, 2005