# List of galaxies with their dark matter halo

Where can one find the list of galaxies with their dark halo masses, I've searched several sites but I found no such proper list where the masses of their dark matter halo is compiled?

Can anybody help?

This paper by Wechsler & Tinker (2018) should give you a better direction. Depending on the model, different estimates of DM halos come up. You just need to go through the sections on observational evidence and the underlying papers.

https://arxiv.org/pdf/1804.03097.pdf

Do you mean observed or simulated? I assume the former, but observing the mass $$M_\mathrm{h}$$ of a dark matter (DM) halo is not easy (I mean, they're invisible), so you need a model to relate $$M_\mathrm{h}$$ to some observable.

### "Observed" dark matter halos

Typically, such measurements are not made in large bulks, so I don't think you can find a "list". Rather, models are constructed based on theory and a few observations, together with previous observations. Popular ways to obtain $$M_\mathrm{h}$$ is abundance matching, where a property of the DM halos (in this case mass) is assumed to correlate tightly with some observable such as stellar mass/luminosity (e.g. Reddick et al. 2013; Behroozi et al. 2013).

A more direct way is — as discussed in the last section of this answer — to measure the width of emission lines, but in order to convert this into $$M_\mathrm{h}$$ requires measuring the radius as well, which can only be done for the luminous matter, and is particularly difficult for small, faint galaxies.

### Clusters and groups of galaxies

Inferring $$M_\mathrm{h}$$ for clusters of galaxies is easier, I think, as one can be moderately confident that the gas is in hydrostatic equilibrium and hence relate the observed X-ray brightness to halo mass (e.g. Bhattacharya et al. 2013). See also Yang et al. (2009).

### Simulated dark matter halos

I don't know why you need such a list, but if you're okay with (hydrodynamically) simulated galaxies, then there are plenty of such catalogues, since in this case we know exactly the masses of their different components. Joanne Cohn at Berkeley has compiled a list of simulated galaxy catalogues (note that the list also contains catalogues of dark matter-only simulations).