Talk:Milky Way#RfC on our Solar System vs the Solar System

{{Wikipedia:Good article reassessment/Milky Way/2}}

The article claims

> Estimates of the mass of the Milky Way vary, depending upon the method and data used. The low end of the estimate range is 5.8×1011 solar masses (M☉),

based on publications from 2012 and 2019. Yet a much more recent publication https://observatoiredeparis.psl.eu/the-revisited-mass-of-the.html revises these older estimates:

> The absolute upper mass limit for the Milky Way is 540 billion, meaning that the Milky Way is at least half as massive as we thought.

Should this be reflected in the article? 2001:1C00:3487:1B00:A4EB:8F22:33E1:CB66 (talk) 18:13, 18 April 2025 (UTC)

:I updated the content based on a recent review.

:* Bobylev, V.V., Baykova, A.T. Modern Estimates of the Mass of the Milky Way. Astron. Rep. 67, 812–823 (2023). https://doi.org/10.1134/S1063772923080024

:The Jiao paper linked from the press release you posted was discussed by

:* Hunt, J. A., & Vasiliev, E. (2025). Milky Way dynamics in light of Gaia. New Astronomy Reviews, 101721.

:saying that they come up with a smaller number, for reasons as yet unknown. That is, this review does not consider this a breakthrough but just another of many measurements with slightly different values. Johnjbarton (talk) 19:28, 18 April 2025 (UTC)

I'd like to correct the transcription of 天の川(Etymology > Common Names > River of Heaven). amanogawa is here appropriate. Nitro7cttu (talk) 18:09, 30 April 2025 (UTC)

:Please provide a source. Johnjbarton (talk) 18:25, 30 April 2025 (UTC)

::Of course I can (because I just have to provide a Japanese dictionary as a source), but I wonder if it might be a bit redundant to present a source for transcription of a common word. Nitro7cttu (talk) 19:17, 30 April 2025 (UTC)

:::If the current content is not correct, then a source is not redundant but rather essential. Johnjbarton (talk) 19:41, 30 April 2025 (UTC)

This wiki says 100 million stars, but the truth is 100 billion or more. Please fix someone thats registered.

src https://www.space.com/26078-how-many-stars-are-there.html 84.210.159.15 (talk) 00:26, 14 May 2025 (UTC)

:Your claim is incorrect. Johnjbarton (talk) 00:30, 14 May 2025 (UTC)

:Yeah I see it correct now, thanks! :) 84.210.159.15 (talk) 13:32, 14 May 2025 (UTC)

This figure seems outdated (2004-2007) compared with the data in Local standard of rest. Ra-raisch (talk) 21:43, 22 May 2025 (UTC)

:{{re|Ra-raisch}} You're free to update it with reliable sources, of course. - FlightTime (open channel) 21:48, 22 May 2025 (UTC)

::The probem is, that all authors deliver varying speeds. Just the curve seems outdated. So best I could do is to delete that. Ra-raisch (talk) 21:53, 22 May 2025 (UTC)

::Here is a newer curve in Fig.3 https://arxiv.org/pdf/1810.09466 I cannot say if it is correct but this paper is cited by CODATA as reference. Ra-raisch (talk) 21:59, 22 May 2025 (UTC)

:::Well, I think the "most reliable" one would do, if not, someone will let you know. - FlightTime (open channel) 22:02, 22 May 2025 (UTC)

::::If it was that easy I would have done this straight away ... I have no experience with grafics in wiki and do not want to copy that from arXiv without permission anyway. So I can only delete it and maybe revise some of the text. Ra-raisch (talk) 22:12, 22 May 2025 (UTC)

:::::Me neither, that's why I don't ask. - FlightTime (open channel) 22:16, 22 May 2025 (UTC)

:::The link you posted goes to a paper published by AAS under the CC-BY 4.0 license as

:::* Eilers, A. C., Hogg, D. W., Rix, H. W., & Ness, M. K. (2019). The circular velocity curve of the Milky Way from 5 to 25 kpc. The Astrophysical Journal, 871(1), 120.

:::The license requires that the reference accompany the image.

:::File:Apjaaf648f3 hr.jpg Johnjbarton (talk) 23:40, 22 May 2025 (UTC)

:By "this figure" I assume you mean this figure:

:File:Rotation curve (Milky Way).svg]] Johnjbarton (talk) 23:25, 22 May 2025 (UTC)

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