[TML] Noncanonical TU 3D.

[Jerry W Barrington]

On 1/3/08 2:39 AM, "Timothy Little" <tim at little-possums.net> wrote:

> On Wed, Jan 02, 2008 at 07:47:43PM -0500, Thad Coons wrote:
>> The difficulty is that it takes only one input parameter, star mass,
>> and generates everything else from that. I don't have an easy way to
>> correlate that to the spectral type.
> 
> There is a rough table on Wikipedia for main sequence stars.
> http://en.wikipedia.org/wiki/Stellar_classification
> The figures there seem to be more for the upper end of the range than
> average or lower.

Also, any given star varies considerably in brightness, even over it's main
sequence life.  GURPS 4ed:Space has an excellent listing on page 103.  It
shows a G2 star going from .68 to 1.6 Solar luminosity over a span of 10
billion years.  After that it spends 1.6 billion years as a sub-giant still
at about 1.6 luminosity, and another billion as a giant at about 40
luminosity.

This table is a simplification, and the stellar evolution software I'm
tinkering with goes into *much* more detail, and handles stars larger than 2
Solar mass and more specific masses (any number instead of only multiples of
.05).