Journal
ASTROPHYSICAL JOURNAL
Volume 733, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/733/1/25
Keywords
astrometry; Galaxy: fundamental parameters; Galaxy: kinematics and dynamics; masers; stars: formation; techniques: high angular resolution
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Funding
- Chinese NSF [NSF 11073054, NSF 10733030, NSF 10703010, NSF 10621303]
- NBRPC [2007CB815403]
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We report trigonometric parallaxes for three massive star-forming regions, corresponding to distances of 2.34(-0.11)(+0.13) kpc for G12.89+0.49 (also known as IRAS 18089-1732), 1.98(-0.12)(+0.14) kpc for G15.03-0.68 (in the M17 region), and 8.0(-2.0)(+4.0) kpc for G27.36-0.16. Both G12.89+0.49 and G15.03-0.68 are located in the Carina-Sagittarius spiral arm.
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