User talk:Diamantinasaurus

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Happy editing! WikiOriginal-9 (talk) 22:32, 13 October 2023 (UTC)

Proposed deletion of List of stars larger than any closer star


The article List of stars larger than any closer star has been proposed for deletion&#32;because of the following concern: "Fails WP:GNG since there is no coverage in reliable sources. The page also relies on WP:SYNTHESIS."

While all constructive contributions to Wikipedia are appreciated, pages may be deleted for any of several reasons.

You may prevent the proposed deletion by removing the notice, but please explain why in your edit summary or on the article's talk page.

Please consider improving the page to address the issues raised. Removing will stop the proposed deletion process, but other deletion processes exist. In particular, the speedy deletion process can result in deletion without discussion, and articles for deletion allows discussion to reach consensus for deletion.  SpaceImplorer ExplorerImplorer   19:26, 27 November 2023 (UTC)

Nomination of List of stars larger than any closer star for deletion
A discussion is taking place as to whether the article List of stars larger than any closer star is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Articles for deletion/List of stars larger than any closer star until a consensus is reached, and anyone, including you, is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article until the discussion has finished.  SpaceImplorer ExplorerImplorer   09:46, 11 December 2023 (UTC)

Nomination of G0.238-0.071 for deletion
A discussion is taking place as to whether the article G0.238-0.071 is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Articles for deletion/G0.238-0.071 until a consensus is reached, and anyone, including you, is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article until the discussion has finished.  SpaceImplorer ExplorerImplorer   15:14, 15 December 2023 (UTC)

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Radius of VV Cephei
Special:Diff/1228541985 Actually the radius of uses a distance (~1000 pc from parallax) that is very close to the noiseless distance from Bailer-Jones et al. (1018 pc), which makes it reliable, despite the large astrometric noise in parallax. Using this distance and the angular diameter (7.251 mas) it gives, just of difference. 21 Andromedae (talk) 20:29, 11 June 2024 (UTC)


 * Just because it is close to a value that might be accurate doesn't mean that it is too. The Bailer-Jones distances are also questionable for red supergiants as they use optical parallaxes which are often inaccurate due to RSGs having angular diameters larger than their parallax values and have inhomogeneous surfaces. The "rpgeo" value is somewhat better than the other one but still should be taken with a grain of salt.  SpaceImplorer ExplorerImplorer   07:25, 12 June 2024 (UTC)
 * It is still the most recent data we have. I have no doubt that it is trustworthy. The error bars are acceptable for a red supergiant, which is too distant to have its distance accurately measured. We don't need to dismiss the new data just because it may be inaccurate, all other estimates may be as well. 21 Andromedae (talk) 10:48, 12 June 2024 (UTC)
 * "Newer" does not mean "more accurate". I used a radial velocity measurement to approximate the distance and got to ~$1.85$ kpc, which is a lot higher. Also, a low uncertainty doesn't automatically make the data used for it more accurate. There could still be interferences.
 * Masers can also be used to very accurately determine an RSG's parallax, they aren't too far away. Here is the paper for my previous claim about optical parallaxes by the way.  SpaceImplorer ExplorerImplorer   11:12, 12 June 2024 (UTC)
 * I know that “newest” doesn’t mean “most accurate”, but we still can't rule out the recent measurements, because we don't know if they are less or more reliable than the older one, or if they are unreliable. Almost all RSGs will have significant uncertainty in the distance, including VV Cephei, which has distances ranging from 600/750 pc (Gaia/Hipparcos), up to 1,500 pc from Bauer (2008) or more. 21 Andromedae (talk) 11:55, 12 June 2024 (UTC)
 * About the very low temperature of 3396 K, it is caused by the low luminosity estimated by Baines (2021), only . If we use from Ayres et al. (2022), it gives 3,815.9 K. 21 Andromedae (talk) 12:00, 12 June 2024 (UTC)