Grant... nearest stars?

Will · Post #1by **Will** » 14.10.2003, 17:14

The stellar companion for BL Ceti (Luyten 726-8), UV Ceti, has a radius of 100000 km. This should be more like 20000 km... wondering if I'm missing something.

Post #2by **granthutchison** » 14.10.2003, 17:51

Will wrote:The stellar companion for BL Ceti (Luyten 726-8), UV Ceti, has a radius of 100000 km. This should be more like 20000 km... wondering if I'm missing something.

That's a tiny radius ... where did you get it from?
My figure is ~14% of the radius of the Sun, about right for UV Ceti's stellar class. See, for instance, http://www.solstation.com/stars/luy726-8.htm for confirmation.

Grant

Will · Post #3by **Will** » 14.10.2003, 18:19

Apparently I got it from my ass. Yeesh. My bad.

My problem was seeing '.03 Rsun' from Celestia, and translating '14%' as '.014.'

I teach Math SAT prep, can you believe it?

Nevermind.

Oh, any suggestions on how to make a stellar companion have a proper spectral shine?

Post #4by **granthutchison** » 14.10.2003, 19:16

Will wrote:My problem was seeing '.03 Rsun' from Celestia ...

Radii for cool stars are underestimated in Celestia, but not by that much since we introduced a bolometric correction. Are you using 1.3.0?

Will wrote:Oh, any suggestions on how to make a stellar companion have a proper spectral shine?

Nag Chris! :wink:

.

Grant

wtimmins · Post #5by **wtimmins** » 15.10.2003, 01:00

This is Will in proper form...

I'm using 1.3.0... Mac, you see. Glad to hear it is more correct in 1.3.1 (I presume). I guess I'll just have to pine for it.

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Grant... nearest stars?

Grant... nearest stars?

Re: Grant... nearest stars?