Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jkas...43...41c&link_type=abstract
Journal of the Korean Astronomical Society, vol. 43, no. 2, pp. 41-54
Astronomy and Astrophysics
Astronomy
Radio Lines: Stars, Stars: Formation, Ism: Jets And Outflows, Ism: Kinematics, Masers: H2O Maser
Scientific paper
We report relative proper motion measurements of H2O masers in massive star-forming region W51 Main, based on data sets of VLBI observations for H2O masers at 22 GHz with Japanese VERA telescopes from 2003 to 2006. Data reductions and single-beam imaging analysis are to measure internal kinematics of maser spots and eventually to estimate the three-dimensional kinematics of H2O masers in W51 Main. Average space motions and proper motion measurements of H2O masers are given both graphical and in table formats. We find in this study that W51 Main appears to be associated with hyper-compact H II region with multiple massive proto-stars whose spectral types are of late O.
Byun Yong-Ik.
Cho Jungyeon
Choi Yoon Kyung
Kan-ya Yukitoshi
Kim Maeng-Ki
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