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

1) If all you are left with is the weird ones, then a formula based on the assumption that its a main sequence star, type V, wont help you any. Once you leave the main sequence, I think the formulas would get very different, if they even exist.

2) I think AS2 assumes that stars that orbit one another are considered multiples, but you can define it how ever you want. AS2 does not put multiple stars in the system display. The orbit of each star is ignored. I'm not sure how "close" star could be part of the same system but not orbit one another. By definition, I thought a system comprised bodies that were in one another's gravity field. If field is the right term.

4) I'd volunteer to help sort data, but I have way to much on my plate already and I've agreed to help Monkey Terror out with his CHView dataset.

Dan.

___________________________________________________
"Umm..."

----- Original Message ----
From: Dalton Calford <dcalford-at-distributel.ca>
To: nbossoftware-at-nbos.com
Sent: Saturday, February 23, 2008 5:50:29 PM
Subject: Re: [nbos] Stellar Radius - Mass - Luminosity Parameters.


Hi
Dan,

Well,
as
you
can
see,
I
have
a
bit
of
the
calculations
already
done,
but,
I
have
found
some
stars
in
my
stellar
catalog
that
are
not
in
my
list.
I
guess
they
are
star
types
that
do
not
nicely
fit
into
the
OBAFGKM
format
(types
of
stars
that
are
newer
than
when
that
list
was
created?)
and
some
stars
that
are
simply
typos
etc.

So,
the
things
I
need,
in
order

1.)
Calcululation
of
mass
of
a
star
based
upon
Lumenosity
(I
already
have
a
calculation
for
lumenosity
based
upon
absulute
magnitude)

2.)
A
specification
of
what
comprises
a
"Multiple"
system
as
per
AS2,
because
traveller
(which
my
original
purpose
for
this
task
is
based
upon)
has
"close"
stars
which
are
part
of
the
same
system
but
not
obiting
each
other.
I
need
this
to
properly
decode
the
different
binary
systems
so
that
everything
is
in
a
format
that
AS2
understands.
(this
is
what
makes
my
starlist
different
from
the
existing
large
star
lists
on
nox)

3.)
Permission
from
Ed
to
post
up
the
details
I
have
onto
the
nbos
wiki
so
that
many
sets
of
eyes
can
confirm
the
details
I
have
are
correct.
What
I
would
do
to
break
the
data
into
sets,
and
hopefully
we
would
have
volunteers
who
would
take
ownership
of
a
set
and
confirm
the
entries
are
correct.
This
would
include
making
sure
the
common
names
are
entered
and
binaries
are
correct.

4.)
Volunteers
to
work
on
the
wiki
if
Ed
gives
the
go-ahead.

When
it
is
all
done,
I
am
hoping
Ed
will
incorporate
it
as
a
series
of
standard
templates
(20ly,
50ly,
100
ly,
1000
ly
etc)



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