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Astr112 Photography Projects, Spring 2005

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Spindle Galaxy, David Park

SpindleGalaxy

The Spindle Galaxy is a galaxy which is located in the constellation Draco. This Galaxy has a visual brightness of 9.9. It has an NGC catalog number of NGC 3115. Its mass is about 1 trillion solar masses, so it is a considerably massive galaxy. The 5.2' diameter of the Spindle Galaxy corresponds to about 60,000 light-years, its globular cluster halo extends more far outward. No supernovae have been discovered in this galaxy yet.

This picture was taken in the late winter of 2005. The image shown is the side of the galaxy. That is why we do not see it as a circle, but we see the bulge and the disk of it.The galaxy has a yellow color, which indicates that the older stars in the galaxy are spread evenly. Also, there is a hint of blue in it, which shows that there are high-mass stars that have formed recently. The high-mass stars have more fuel than the low mass stars, but they burn it quicker. Thus, high-mass stars have shorter lifetime than low-mass stars.

References:
" Absolute Astronomy"

Right Ascension (J2000) 10:05:14.1
Declination (J2000) -07:43:07
Filters used blue(B), green(V), red(R), and clear(C)
Exposure time per filter 300 seconds
Date observed

March 5 , 2005