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Astr111 Photography Projects, Fall 2005

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Deer Lick Group, David Brace

Deer Lick Galaxy

The Deer Lick Group is a galaxy, its technical name is NGC7331. This Galaxy is a spiral galaxy and closely resembles our own, the Milky Way Galaxy. This galaxy has been subject to radio observation, and it was found that nuclear sources were emitted from the galaxy, pointing to the theory that a massive black hole (5*10^8 Mo) resides within NGC 7331. The Deer lick Group is composed of cool gas and dust that has been dispersed through the galaxy's disk-like form along with other hotter ionized gas. This Galaxy was discovered by William Herschel in the year 1784.

"The Deer Lick group can easily been seen from the picture. Its arms spiral out and are very distinct. Also, there are other galaxies on the left. The picture above is black and white, so it is not dramatically enhanced. This does allow though for the spiral arms and faint stars and galaxies to be seen better. This galaxy is about 46 million light years away, has an angular size of 3.57 arc-minutes, and a linear size of 47,788.5 Light years.

References:
http://www.seds.org/messier/xtra/ngc/n7331.html
http://www.clifty.com/scott/DSO/7331.html
Bennett, Jeffery. The Cosmic Perspective. Page G-10 through 11
Calvin College Astronomy Web Page

 

Right Ascension (J2000) 22:37
Declination (J2000) 34
Filters used Clear(C)
Exposure time per filter 10x120 seconds in C
Date observed

October 6, 2005 (C)