Open AccessParallax of Star-forming Region G027.22+0.14
Author(s) -
S. B. Bian,
Ye Xu,
J. J. Li,
Y. W. Wu,
B. Zhang,
Xi Chen,
Yingjie Li,
Zuzhang Lin,
Chunbo Hao,
D. J. Liu
Publication year - 2022
Publication title -
the astronomical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.61
H-Index - 271
eISSN - 1538-3881
pISSN - 0004-6256
DOI - 10.3847/1538-3881/ac3d90
Subject(s) - parallax , physics , luminosity , proper motion , astrophysics , stars , astronomy , galaxy
Using the Very Long Baseline Array, we measured the trigonometric parallax and proper motions toward a 6.7 GHz methanol maser in the distant high-mass star-forming region G027.22+0.14. The distance of this source is determined to be 6.3 − 0.5 + 0.6 kpc. Combining its Galactic coordinates, radial velocity, and proper motion, we assign G027.22+0.14 to the far portion of the Norma arm. The low peculiar motion and lower luminosity of G027.22+0.14 support the conjecture by Immer et al. that low-luminosity sources tend to have low peculiar motions.