What is MUV of a galaxy?

  • #1
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Main Question or Discussion Point

I was going through the following paper: https://arxiv.org/pdf/1605.08054.pdf

In the 2nd line, it says, "GN-z11, a MUV=-21.1 galaxy at z=11.1."

I know, what z=11.1 is. If I'm correct, it's the redshift of the galaxy which helps in measuring its velocity.

I'm not quite sure, though, of what MUV is or why the galaxy is named GN-z11. Any help will be highly appreciated. Thanks.
 

Answers and Replies

  • #2
Drakkith
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I think it's the absolute magnitude in UV for the galaxy, but I'm not certain.
 
  • #3
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I think it's the absolute magnitude in UV for the galaxy, but I'm not certain.
Absolute magnitude as in brightness?
 
  • #4
Drakkith
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That's right.
 
  • #5
phyzguy
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Drakkith is right that MUV is the absolute magnitude in the UV,. As for the name, Wikipedia says,
"The object's name is derived from its location in the GOODS-North field of galaxies and its high Doppler z-scale redshift number (GN + z11)"
 
  • #6
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All right, though, why is the value negative?
 

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