Grant... nearest stars?

Post requests, images, descriptions and reports about work in progress here.
Topic author
Will

Grant... nearest stars?

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.

granthutchison
Developer
Posts: 1863
Joined: 21.11.2002
With us: 22 years

Re: Grant... nearest stars?

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

Topic author
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?

granthutchison
Developer
Posts: 1863
Joined: 21.11.2002
With us: 22 years

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
Posts: 7
Joined: 07.10.2003
With us: 21 years 1 month
Location: Pittsburgh, PA, US

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.


Return to “Add-on development”