Quote:
Originally Posted by astroron
Trevor, I missed your post as I was not near a computer for about three months earlier this year 
Ron |
No worries Ron,
There is a lot of info out there on this subject, much of it is somewhat dated, a reflection of the pace at which research is progressing.
We really do live in a golden age of discovery, it is unfortunate that much of it doesn't filter down to the general population.
I became interested in the work of Andrea Ghez back in 2004 when I was doing my degree at Swinburne. I was writing an essay on "The Distance to the Galactic Centre" for Professor Duncan Forbes.
Her work fascinated me, particularly regarding how refinement of Ro (the distance to out galactic centre), by a direct measurement method, would result in a refinement of the absolute luminosity of the variable stars in the Sag A* region. This would then lead to a refinement of the distance ladder.
If you are interested in keeping abreast of the latest research, really in just about any field of astronomy then I would highly recommend the NASA ADS Abstract data base.
Regards
Trevor
