Talk:Andromeda Galaxy

Discovery of the M31 [OIII] emission arc

Added a new section, based on a new discovery associated with M31. As more is known about it, this will likely spin off onto its own page, but am adding here now as a placeholder. Is exciting stuff, and a great time to be alive.

[O III] Emission Arc discovery

https://www.astrobin.com/1d8ivk/ https://iopscience.iop.org/article/10.3847/2515-5172/acaf7e

It appears a new emission arc was detected around and inside Andromeda. Note worthy for the page? Could probably be a good image in that Astrobin article to throw in as well. Mrblue630 (talk) 18:54, 9 January 2023 (UTC)

Yes!

I added in a section on the

Andromeda Galaxy

page:

https://en.wikipedia.org/wiki/Andromeda_Galaxy#Discovery_of_the_M31_[OIII]_emission_arc

and mentioned here that it could maybe be its own page as more info comes in. Might be good to wait until there is more coverage in mainstream science press other than the few I cited in the new section before making a new paper. If a new page gets removed as non-notable, it's hard to get it back even after it is notable. For now, I'd recommend adding new info to the section above.

Would be great to add a photo. I don't see any citation on the image on AstroBin of the license of the image. Needs to be Creative Commons to add to Wiki Commons, to add here.

I'll see if I can get the discovers to add it. Have you seen an official copy with the license listed? ElizaBarrington (talk) 06:46, 16 January 2023 (UTC)

Barred galaxy?

Andromeda is classified as SA(s)b on this page, which is correctly cited to NASA/IPAC EXTRAGALACTIC DATABASE. But doesn't that mean it is an unbarred spiral? If so, the first sentence on this page should be changed, as it conflicts with this information. Juicebox87 (talk) 18:36, 5 July 2023 (UTC)

The Andromeda Galaxy has a bar structure in its central region, though it is not as conspicuous as it is small and surrounded by a more prominent, boxy bulge (see this paper). SkyFlubbler (talk) 17:00, 6 August 2023 (UTC)

Distance from earth is wrong

is approximately 30 billion light years (source exoplanet app) << this is wrong. Its 2.537 million light years according to -> https://www.nasa.gov/image-article/galaxy-next-door/#:~:text=At%20approximately%202.5%20million%20light,Milky%20Way's%20largest%20galactic%20neighbor. Vivaxe (talk) 07:08, 1 November 2023 (UTC)

Lead image

@Jackarrrr, FlightTime, and CactiStaccingCrane: In regards to Jackarrr's edit warring, I wanted to urge them to revert their edit warring and start a discussion if they continue to believe the other image is superior. For broader context, there is discussion here already, and the previous user who insisted on edit warring over the image is now banned from editing this page. Cerebral726 (talk) 16:12, 11 January 2024 (UTC)