Understanding our Galaxy: from the center to outskirts
Abstract
We describe the efforts to understand our Milky Way Galaxy, from its center to outskirts, including (1) the measurements of the intrinsic size of the galactic center compact radio source Sgr A*; (2) the determination of the distance from the Sun to the Perseus spiral arm; and (3) the revealing of large scale global magnetic fields of the Galaxy.
- Publication:
-
A Giant Step: from Milli- to Micro-arcsecond Astrometry
- Pub Date:
- July 2008
- DOI:
- 10.1017/S1743921308019832
- Bibcode:
- 2008IAUS..248..470S
- Keywords:
-
- Galaxy: center;
- Galaxy: structure;
- black hole physics;
- masers;
- pulsars: general;
- techniques: high angular resolution;
- astrometry;
- stars: distances;
- stars: kinematics;
- ISM: magnetic fields;
- ISM: structure