A polar view of the Andromeda Galaxy Options

[Webscientist]

I've generated a polar view of the Andromeda Galaxy on the basis of a mosaic of that galaxy composed of infrared data acquired with the Spitzer Space Telescope. The mosaic was proposed on October 13th, 2005.
The Andromeda Galaxy is highly inclined relative to the normal of the projection Earth/core of the Andromeda Galaxy (approximately 77 degrees).
The polar view of the Andromeda Galaxy allows a comparison with our own galaxy the Milky Way.
One can clearly notice that both galaxies represent barred spiral galaxy and that the Andromeda Galaxy has a complexe structure related to the gravitational influence of other objects in particular.
Here is the outcome with the Milky Way and the Andromeda Galaxy at scale:


Here is the original view of the Andromeda Galaxy in infrared (Spitzer data):


And here is the link of the animation of the Andromeda Galaxy I produced:
https://www.youtube.com/watch?v=p-jAt_rJPF8

[fredk]

It's nice to see the deprojected view. But the evidence for the bar is quite subtle, since deprojecting will tend to stretch a circularish blob into an elongated bar-like shape. See this paper for all the gory details.

[Webscientist]

It's nice to see the deprojected view. But the evidence for the bar is quite subtle, since deprojecting will tend to stretch a circularish blob into an elongated bar-like shape. See this paper for all the gory details.

Thanks Fred for your feedback and the relevant link.
The entire view of the original mosaic was deprojected so that the deprojection process was also applied to stars or nebulae from our galaxy or to faraway galaxies which are in the field of view of the galaxy. Any star that undergoes deprojection will be elongated in the final view.
One can imagine that the perspective view (the original mosaic) hides a portion of the arms on the other side of the Andromeda Galaxy.
Regarding the core of the galaxy, the barred structure is not obvious in the infrared mosaic based on Spitzer data. I note however that the vertical dimension is relatively significant compared to the horizontal dimension.
I trust the 3D software (Blender) in generating the polar view of the Andromeda Galaxy.
The old computer I used had to work hard to produce the 1000 frames (25 frames per second) of the deprojection/zoom process in the animation (up to 6 minutes per frame that is to say the equivalent of 3 or 4 days of intensive work for the computer ! ).