Relative parallaxes in the massive star forming region W33
Abstract
The massive star forming complex W33 contains several molecular clouds at different stages of star formation activity, ranging from quiescent to highly active clouds. Our trigonometric parallax observations of water masers in this complex, conducted with the VLBA at 22.2 GHz, show that all water masers have the same distance of 2.4 kpc, locating the W33 complex in the Sagittarius spiral arm.
- Publication:
-
Cosmic Masers - from OH to H0
- Pub Date:
- July 2012
- DOI:
- Bibcode:
- 2012IAUS..287..413I
- Keywords:
-
- masers;
- astrometry;
- stars: distances;
- stars: formation;
- Galaxy: structure