Astrometry of H2O Masers in the Massive Star-Forming Region IRAS 06061+2151 with VERA

作者：Niinuma Kotaro^*; Nagayama Takumi; Hirota Tomoya; Honma Mareki; Motogi Kazuhito; Nakagawa Akiharu; Kurayama Tomoharu; Kan Ya Yukitoshi; Kawaguchi Noriyuki; Kobayashi Hideyuki; Ueno Yuji

来源：Publications of the Astronomical Society of Japan, 2011, 63(1): 9-16.

DOI：10.1093/pasj/63.1.9

• astrometry
• ISM: H II regions
• masers (H2O)
• techniques: high angular resolution
• VERA

We measured the trigonometric annual parallax of an H2O maser source associated with the massive star-forming region IRAS 06061+2151 with VERA. The annual parallax of 0.496 +/- 0.031 mas, corresponding to a distance of 2.02(-0.12)(+0.13) kpc, was obtained by 10 epochs of observations during the period from 2007 October to 2009 September. This distance was obtained more accurately than the photometric one previously measured, and places IRAS 06061+2151 in the Perseus spiral arm. We found that IRAS 06061+2151 also has a peculiar motion of larger than 15 km s(-1) which is counter to the Galactic rotation. This is similar to the motions of five sources in the Perseus spiral arm, whose parallaxes and proper motions have already been measured with satisfactory accuracy. Moreover, these sources move with an average of 27 km s(-1) toward the Galactic center and counter to the Galactic rotation.

• 出版日期2011
• 单位中国科学院国家天文台