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What is the definition of a Seyfert galaxy?

Updated: 8/16/2019
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A spiral galaxy with a small, compact, bright nucleus that exhibits variable light intensity and radio-wave emission.

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Q: What is the definition of a Seyfert galaxy?
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How light years is the seyfert galaxy from earth?

It is not correct to talk about "the" Seyfert galaxy - Seyfert galaxies are a type of galaxy.


Is a seyfert galaxy a spiral galaxy with an active core?

A Seyfert galaxy is a spiral galaxy with an active core.


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Yes. A Seyfert galaxy is a type of spiral galaxy, but with an active nucleus.


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3C 153 is a Seyfert galaxy located in the constellation Auriga.


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Tim Seyfert's birth name is Timothy Dean Seyfert.


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* M15 - a globular cluster near the nose of Pegasus. * NGC 7742 - a Type 2 Seyfert galaxy.


How tall is Tim Seyfert?

Tim Seyfert is 6' 4".


Does the Milky Way Galaxy have an active galactic nucleus?

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When was Carl Keenan Seyfert born?

Carl Keenan Seyfert was born in 1911.


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Michael Seyfert has written: 'Im Niemandsland'