I was a coauthor on this paper which was just recently released on the Astrophysical Journal (Supplements Section: since it was damn long). Here's a link to the site where you can see a version of it in pdf.


HST obs. of WD Cooling Sequence of M4

It's a very interesting paper...at least I think so!

___________________
research webpage: www.cfa.harvard.edu/~tcurrie

oh come on, I know you guys have been just chomping at the bit to tell everyone what you think about our cooling sequence model and how it results in a substantially older age to M4 than the DeMarchi group :P

___________________
research webpage: www.cfa.harvard.edu/~tcurrie

What's a Gyr?
I'm only familiar with widening gyres

___________________
Светопресавление
your pearl casting hero

quote:

Originally posted by Subey What's a Gyr? I'm only familiar with widening gyres

Gyr=gigayear or 10^9 years. Brad is saying that from cooling models of white dwarfs (matching them to color-magnitude diagrams) the age of the galactic halo (well, at least this cluster in the halo) is about 12 Gyr or 12 billion years.

___________________
research webpage: www.cfa.harvard.edu/~tcurrie

This is interesting read. Majority of the analysis and technical terms are way over my head. I used to be interested in astronomy, especially in the life phases of stars.

Good stuff, keep it up.

___________________
Blip, blip, blip...

Kenosis has the Enterprise as an Avatar, so from now one he's our Astrometrics officer, so anytime we have any questions of that nature we will ask him.

Question 1: What is the maximum size a sun can be without turning "on" (i.e. what is the maximum mass it can have without undergoing fusion)

[edit: and please translate the answer to be relative to our sun as being 1 solar mass]

___________________
Светопресавление
your pearl casting hero