B What is the mass distribution and rotation curve of galaxy IC1101?

[Buckethead]

TL;DR Summary

what does the dark matter distribution look like in galaxy IC1101

I've been reading up a little on IC1101, the largest known galaxy and there is not a lot of info on it, but it seems to have an unusually large mass to light ratio according to this popular article (see half way down):



According to this article at 20kpc it's got 12:1 mass to light, at 200kpc it's 100:1 and at 1000kpc it's got more than 1000:1. What I'm wondering is what would the rotation curve (or in this case velocity dispersion as it's an eliptical with very little rotation) look like approximately? Similar to let's say Andromeda or a more rapidly rising velocity as we move outward? And what might the dark matter size and distribution look like to come up with numbers like these? I couldn't find any real information in this area doing a search. Thanks.

 

[masher]

Buckethead,
The eighth result on this list is exactly what you are looking for. The full list is for as deep as you want to go.
https://arxiv.org/search/?query=Abell+2029&searchtype=abstract&source=header

 

[Buzz Bloom]

Hi @masher:

The date 2029 seems to be an error. The link fails to work.

Regards,
Buzz

 

[berkeman]

The date 2029 seems to be an error. The link fails to work.

Link works for me (running Firefox on an old Vista PC):

 

[Astronuc]

Link works for me (running Firefox on an old Vista PC):

Works for me too with Firefox and an old MacBookPro

The eighth paper on the list that I find is https://arxiv.org/abs/1612.06428