Obtaining the values ​​of the absolute magnitude in the i band and the half-mass radius of the galaxies available from TNG50.

Felipe Albanez
  • 11 Jun

Dear TNG Team,

I am currently using TNG-50 data. I am reaching out because I am specifically interested in obtaining the values of the absolute magnitude in the i band and the half-mass radius of the galaxies available from TNG50.

Unfortunately, I have not been able to locate this data on the website. Could you please let me know if this information is available and, if so, guide me on where I can access it?

If the dataset is too large to download, how can I access it directly in JupyterLab?

Thank you for your assistance.

Dylan Nelson
  • 19 Jun

The half-mass radius is available in SubhaloHalfmassRad, although it would be more common to use the stellar half-mass radius SubhaloHalfmassRadType[4].

The i-band magnitude is SubhaloStellarPhotometrics[6]. There are many caveats with this quantity, you should make sure you are aware of its complexities.

These are datasets in the group catalogs.

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