Trigonometric Parallaxes of Massive Star-Forming Regions. IV. G35.20-0.74 and G35.20-1.74
Abstract
We report trigonometric parallaxes for the high-mass star-forming regions G35.20-0.74 and G35.20-1.74, corresponding to distances of 2.19+0.24 -0.20 kpc and 3.27+0.56 -0.42 kpc, respectively. The distances to both sources are close to their near kinematic distances and place them in the Carina-Sagittarius spiral arm. Combining the distances and proper motions with observed radial velocities gives the locations and full space motions of the star-forming regions. Assuming a standard model of the Galaxy, G35.20-0.74 and G35.20-1.74 have peculiar motions of ≈13 km s-1 and ≈16 km s-1 counter to Galactic rotation and ≈9 km s-1 toward the North Galactic Pole.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 2009
- DOI:
- 10.1088/0004-637X/693/1/419
- arXiv:
- arXiv:0811.0704
- Bibcode:
- 2009ApJ...693..419Z
- Keywords:
-
- astrometry;
- Galaxy: structure;
- stars: individual: G35.20-0.74 G35.20-1.74;
- techniques: interferometric;
- Astrophysics
- E-Print:
- 16 pages, 8 figures