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28 March 2024 |
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Article overview
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Distance of W3(OH) by VLBI annual parallax measurement | K. Hachisuka
; A. Brunthaler
; Y. Hagiwara
; K. M. Menten
; H. Imai
; M. Miyoshi
; T. Sasao
; | Date: |
14 Sep 2004 | Subject: | astro-ph | Affiliation: | 2,1), Y. Hagiwara , K. M. Menten , H. Imai , M. Miyoshi , T. Sasao (MPIfR, JIVE, ASTRON, Kagoshima University, NAOJ, Ajou University | Abstract: | The most powerful tool for measuring distances within our Galaxy is the annual parallax. We carried out phase-referencing VLBI observations of H$_{2}$O masers in the star forming region W3(OH) with respect to the extragalactic continuum source ICRF 0244+624 to measure their absolute proper motions. The measured annual parallax is 0.484 $pm$ 0.004 milli-arcseconds which corresponds to a distance of 2.07^{+0.01}_{-0.02}$ kpc from the sun. This distance is consistent with photometric and kinematic distances from previous observations. | Source: | arXiv, astro-ph/0409343 | Services: | Forum | Review | PDF | Favorites |
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