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Physics & Astronomy Department

Astr110 Photography Projects, Spring 2010

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M94, Kyle Mast

M94

Galaxy M94 was discovered on March 22, 1781 by Pierre Mechain and then. It is located in the Canes Venatici constellation, and it is just outside of the local group of galaxies. M94 is a spiral galaxy that has a wide range in brightness when comparing its inner and outer areas. You can tell that this is a spiral galaxy because of its arms that seem to spin around the center of the galaxy, making it look like a spiral. M94 is an interesting galaxy because it is potentially two galaxies that are combining. Information from the Hubble Space Telescope has shown that the galaxy is a double source, suggesting that it is made up of two galaxies.

M94 is a spiral galaxy with a bright inner region that is filled with areas with new stars. The inner disk's color is predominately bright yellow stars and it does not have a spiral pattern. Outside of the inner disk, there are young blue star clusters, which are visible in the image above. The outer reaches of galaxy M94 are less visible and are more yellowish in color. The M94 galaxies angular size is about 6.5 arcminutes. The distance to the galaxy is about 14,500 kly. Knowing the angular size and the distance to the galaxy, I was able to calculate the linear size of the galaxy as 27,000 light years.

References:
Normandin, George. "Spiral Galaxy M94" http://www.kopernik.org/images/archive/m94.htm.

Frommert, Hartmut and Kronberg, Christine. "Messier 94." http://seds.org/messier/m/m094.html

Right Ascension (J2000) 12:51:25
Declination (J2000) +41:4803:0033
Filters used blue(B), green(V), red(R), and clear(C)
Exposure time per filter 5x per filter
Date observed

March 2, 2009