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1 vote
3 answers
2k views

Velocity of most distant galaxies

1 vote
1 answer
238 views

Is this a galaxy?

2 votes
0 answers
30 views

Dual mode in SExtractor

0 votes
0 answers
24 views

calculating the color of a galaxy and making the k correction

0 votes
1 answer
66 views

Using SExtractor for JWST data

1 vote
1 answer
85 views

Are the rotational axes of galaxies ever aligned?

2 votes
2 answers
121 views

Does anybody know of a top down map of andromeda in the style of existing (artistic) milky way maps?

0 votes
1 answer
74 views

What is a "re-simulation"?

0 votes
0 answers
41 views

Finding the algular size of galaxy cluster when given the RA and dec cordinates of all the galaxies in the cluster

13 votes
2 answers
1k views

Why is the metallicity of dwarf galaxies low?

0 votes
1 answer
74 views

The distribution of mass in the bullet cluster

0 votes
0 answers
79 views

How can I convert luminosity from [erg/s/Hz] to [erg/s]

22 votes
1 answer
2k views

What came first, the super-massive black holes, or the galaxies surrounding them?

1 vote
1 answer
147 views

Derive LOSVD from galaxy spectrum, using fourier method

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