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In the following given data in the article
" Size
University of Minnesota professor Roberta M. Humphreys estimates the radius of VY CMa at 1,800 to 2,100 solar radii.[9] To illustrate, if Earth's Sun were replaced by VY Canis Majoris, its radius might extend beyond the orbit of Saturn (about 9 AU). Assuming the upper size limit of 2100 solar radii, light would take more than 2.7 hours to travel around the star's circumference, compared to 14.5 seconds for the Sun. It would take 7×1015 Earths to fill the volume of VY Canis Majoris.
"
It should be noted that the time required for the light to travel the circumference of the star is around 8 hours as opposed to the given 2.7 hours
we can calculate according to the given radius of the star
Circumfrence = 2*pi*r = 2 * 3.1428527 * (2100*695,500) KM = 9,180,600,000 KM
Speed of light = 300000 KM/Sec
therefore time taken for a complete circumference =
9,180,600,000/300000 Sec = 30 602 sec = 8.50055556 hours
Heliumsingh5000 ( talk) 11:40, 15 July 2011 (UTC)
I changed it to 8.5 Bhny ( talk) 00:10, 30 September 2011 (UTC)
Almost a year to the date since the last discussion, here we are again. This time, the question seems to be about Massey et al (2006) and its value of 650 R☉ vs the current starbox values of 1,420 R☉ and 2,063 R☉. Discuss. Lithopsian ( talk) 17:38, 4 November 2021 (UTC)
Unfortunately, we are here again. *sighs*... What radius do we use? I would use the 1,420 solar radii estimate but others support the 600 solar radii estimate. What do we use?-- The Space Enthusiast ( talk) 09:38, 12 December 2021 (UTC)
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edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request. |
Change: The star have produced a large, probable convection-driven, mass-loss events dated to 70, 120, 200 and 250 years before 2020. The clump shed by star in 1985–1995 is the source of hydroxyl maser emission.[51]
To: The star has produced large, probable convection-driven, mass-loss events dated to 70, 120, 200 and 250 years before 2020. The clump shed by the star in 1985–1995 is the source of hydroxyl maser emission.[51] Olesweerlow ( talk) 13:22, 4 January 2022 (UTC)
OS Olesweerlow ( talk) 13:23, 4 January 2022 (UTC)
Don't know why this article is protected, (and it isn't noted, but I can't see the edit button) but could someone please improve the image caption for the "combined optical.." image in the "Distance" section? Current, and proposed:
Change: "Combined optical and infrared image of VY CMa. The bright star at the upper right is τ Canis Majoris."
to: "Combined optical and infrared image of VY CMa (image centre). The bright red star just right of centre is δ Canis Majoris (Wezen), the bright star at the upper right is τ Canis Majoris."
This will greatly improve the clarity of the image, as VY is not bright enough to be obviously the subject of the image. 2001:56A:F0E9:9B00:A500:3B4E:4CA7:B39E ( talk) 16:19, 15 June 2022 (UTC)JustSomeWikiReader
This is the
talk page for discussing improvements to the
VY Canis Majoris article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
Archives: 1Auto-archiving period: 90 days |
This
level-5 vital article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||
|
This
edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request. |
In the following given data in the article
" Size
University of Minnesota professor Roberta M. Humphreys estimates the radius of VY CMa at 1,800 to 2,100 solar radii.[9] To illustrate, if Earth's Sun were replaced by VY Canis Majoris, its radius might extend beyond the orbit of Saturn (about 9 AU). Assuming the upper size limit of 2100 solar radii, light would take more than 2.7 hours to travel around the star's circumference, compared to 14.5 seconds for the Sun. It would take 7×1015 Earths to fill the volume of VY Canis Majoris.
"
It should be noted that the time required for the light to travel the circumference of the star is around 8 hours as opposed to the given 2.7 hours
we can calculate according to the given radius of the star
Circumfrence = 2*pi*r = 2 * 3.1428527 * (2100*695,500) KM = 9,180,600,000 KM
Speed of light = 300000 KM/Sec
therefore time taken for a complete circumference =
9,180,600,000/300000 Sec = 30 602 sec = 8.50055556 hours
Heliumsingh5000 ( talk) 11:40, 15 July 2011 (UTC)
I changed it to 8.5 Bhny ( talk) 00:10, 30 September 2011 (UTC)
Almost a year to the date since the last discussion, here we are again. This time, the question seems to be about Massey et al (2006) and its value of 650 R☉ vs the current starbox values of 1,420 R☉ and 2,063 R☉. Discuss. Lithopsian ( talk) 17:38, 4 November 2021 (UTC)
Unfortunately, we are here again. *sighs*... What radius do we use? I would use the 1,420 solar radii estimate but others support the 600 solar radii estimate. What do we use?-- The Space Enthusiast ( talk) 09:38, 12 December 2021 (UTC)
This
edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request. |
Change: The star have produced a large, probable convection-driven, mass-loss events dated to 70, 120, 200 and 250 years before 2020. The clump shed by star in 1985–1995 is the source of hydroxyl maser emission.[51]
To: The star has produced large, probable convection-driven, mass-loss events dated to 70, 120, 200 and 250 years before 2020. The clump shed by the star in 1985–1995 is the source of hydroxyl maser emission.[51] Olesweerlow ( talk) 13:22, 4 January 2022 (UTC)
OS Olesweerlow ( talk) 13:23, 4 January 2022 (UTC)
Don't know why this article is protected, (and it isn't noted, but I can't see the edit button) but could someone please improve the image caption for the "combined optical.." image in the "Distance" section? Current, and proposed:
Change: "Combined optical and infrared image of VY CMa. The bright star at the upper right is τ Canis Majoris."
to: "Combined optical and infrared image of VY CMa (image centre). The bright red star just right of centre is δ Canis Majoris (Wezen), the bright star at the upper right is τ Canis Majoris."
This will greatly improve the clarity of the image, as VY is not bright enough to be obviously the subject of the image. 2001:56A:F0E9:9B00:A500:3B4E:4CA7:B39E ( talk) 16:19, 15 June 2022 (UTC)JustSomeWikiReader