Re: [nbos] Stellar Radius - Mass - Luminosity Parameters.
Daniel Williamson
Sat Feb 23rd, 2008
Hi Dalton,

I guess what I'm saying is that A0Ia *is* in the standard class, its not weird. Giants have a Ia and Ib types and probably others. Of course, my Astronomy book is not at hand. Also, real world data hedges its bets. If there is controversy in the scientific community, they'll indicate that by listing A0Ia-Ib. They aren't sure and don't want to get flamed for claiming something that accepted science does not agree upon. For gaming purposes, you can make a decision. If you want to be real detailed, you could list all of the stars where you made a judgment call and what you did. For White Dwarves, you don't need to be real exact. You can simply call it a white dwarf and be done. The process of creating the white dwarf would wipe out any planets or RPG interesting details in the system.

Dan

___________________________________________________
"Umm..."

----- Original Message ----
From: Dalton Calford <dcalford-at-distributel.ca>
To: nbossoftware-at-nbos.com
Sent: Friday, February 22, 2008 11:17:13 AM
Subject: Re: [nbos] Stellar Radius - Mass - Luminosity Parameters.


Hi
Dan,

I
have
over
2000
such
systems
and
they
are
listed
alphabetically,
thus
you
see
the
pattern
as
I
only
grabed
the
first
few
items.

If
the
spectral
class
was
in
the
format
G2V
(I
have
all
the
formats
from
O
to
M
with
all
the
decimal
classifications)
then
I
would
have
the
data.

What
I
would
need
help
with
is
for
those
stars
that
don't
fit
into
the
standard
O,B,A,F,G,K,M
size
and
decimal
classes.

Some
of
those
are
dwarf
stars
(white
and
brown)
or
they
are
some
sort
of
class
that
is
not
detailed
properly
(or
just
typed
wrong).

For
those
that
are
just
typed
wrong
or
the
data
is
strange,
all
it
is
going
to
take
is
a
human
to
read
the
data,
go
to
a
site
such
as
celestia
and
get
confirmation
as
to
what
the
star
should
be.


On
Fri,
2008-02-22
at
03:58
-0800,
Daniel
Williamson
wrote:
>
Dalton,
>
>
You
may
be
running
into
difficulty
because
many
of
the
spectral
classes
you
listed:
>
A0Ia
>
comp
>
A0Ia(p)
>
A0Ia0
>
A0Ia:
>
A0Iab
>
A0Iab-Ib
>
A0Iae
>
A0MNp...
>
A0V
>
+
>
A2V
>
>
Are
giants
e.g.
"1a."
The
other
problem
I've
found
is
that
usually
real
world
data
is
generated
by
people
who
prefer
to
hedge
their
bets
rather
than
make
a
judgment
call.
Which
is
why
you
get
things
like
"A0Iab."
The
real
world
is
not
digital,
nor
neatly
categorized.
I
certainly
hope
you
can
accomplish
what
you
set
out
to
do
without
getting
too
frustrated.
>
>
Last
time
I
did
an
exercise
like
this,
I
used
the
mass,
radius,
luminosity
numbers
from
the
2300AD
game.
Would
those
help?
>
>
Dan.
>
Baltimore
>
>
___________________________________________________
>
"Umm..."
>
>
>
>
>
>
>



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