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Chapter 25: Problem 46

Use a telescope with an aperture of at least \(20 \mathrm{~cm}\) (8 in.) to observe the Seyfert Galaxy NGC 1068 (also known as M77). Located in the constellation Cetus (the Whale), this galaxy is most easily seen from September through January. The epoch 2000 coordinates are R.A. \(=2^{\mathrm{h}} 2.7^{\mathrm{m}}\) and Decl. \(=-0^{\circ} 01^{\prime}\). Sketch what you see. Is the galaxy's nucleus diffuse or starlike? How does this compare with other galaxies you have observed?

Short Answer

Expert verified
The detailed answer will notably vary depending on the specific observation and comparison. However, Seyfert galaxies typically have bright, small nuclei that can appear starlike. Individual observations might differ based on equipment and visibility conditions.

Step by step solution

01

Gather necessary equipment

Ensure to use a telescope with an aperture measuring at least \(20 \mathrm{~cm}\). This size is crucial to discern the details of the galaxy as required in the exercise.
02

Locate the Seyfert Galaxy NGC 1068

Use the epoch 2000 coordinates R.A. \(=2^{\mathrm{h}} 2.7^{\mathrm{m}}\) and Decl. \(=-0^{\circ} 01^{\prime}\) to locate NGC 1068 in the constellation Cetus. This galaxy is easily viewed from September through January.
03

Observe and sketch the galaxy

Based on your visibility and the abilities of your telescope, make a sketch of the galaxy, focusing specifically on its nucleus. Is it starlike or diffuse?
04

Compare with other observed galaxies

Draw parallels between NGC 1068 and other galaxies observed in the past. Focus specifically on the appearance of the nucleus, whether it's starlike or diffuse.

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