Talk:VY Canis Majoris

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[edit] Mass

There are two different theories of upper mass limit of red supergiants.

One theory says the mass limit is about 40 times solar masses. The other theory says the mass limit is about 25 times solar masses.

If the characteristics in wikipedia pages of the two red supergiants "VY CMa" and "VV Cep" are accurate , the former mass limit is correct. But the simulation tracks of steller evolutions by the current theory accord with the latter mass limit.

I hope the former mass limit(40 times solar massses) is correct.

Kometsuga 16:07, 24 November 2006 (UTC)


[edit] Size

Regarding the size calculation... assuming a solar radius of 6.96 x10^8 meters, 1800 to 2100 solar radii would be roughly 777 to 908 million miles. Given that Saturns orbit varies between 838 and 939 miles, the edge of the star could be, at times, beyond the orbit of Saturn. Xlation 18:56, 29 November 2006 (UTC)

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