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Water Maser Motions in W3(OH) and a Determination of Its Distance
Open accessAbstract
We report phase-referencing VLBA observations of H 2 O masers near the star-forming region W3(OH) to measure their parallax and absolute proper motions. The measured annual parallax is 0.489 ± 0.017 mas (2.04 ± 0.07 kpc), where the error is dominated by a systematic atmospheric contribution. This distance is consistent with photometric distances from previous observations and with the distance determined from CH 3 OH maser astrometry presented in a related paper. We also find that the source driving the H 2 O outflow, the "TW-object," moves with a three-dimensional velocity of >7 km s -1 relative to the ultracompact H II region W3(OH).
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Cited by
Reid, M. J., Menten, K. M., Brunthaler, A., Zheng, X. W., Dame, T. M., Xu, Y., Wu, Y., Zhang, B., Sanna, A., Sato, M., et al. (2014) · The Astrophysical Journal · doi:10.1088/0004-637x/783/2/130 · Cited by 1,379
Self-citationTrigonometric Parallaxes of High-mass Star-forming Regions: Our View of the Milky Way
Reid, M. J., Menten, K. M., Brunthaler, A., Zheng, X. W., Dame, T. M., Xu, Y., Li, J., Sakai, N., Wu, Y., Immer, K., et al. (2019) · The Astrophysical Journal · doi:10.3847/1538-4357/ab4a11 · Cited by 760
Self-citation“RadioAstron”-A telescope with a size of 300 000 km: Main parameters and first observational results
Kardashev, N. S., Khartov, V. V., Abramov, V. V., Avdeev, V. Y., Alakoz, A. V., Aleksandrov, Y. A., Ananthakrishnan, S., Andreyanov, V. V., Andrianov, A. S., Antonov, N. M., et al. (2013) · Astronomy Reports · doi:10.1134/s1063772913030025 · Cited by 268
Metadata
- Authors
- Hachisuka, K., Brunthaler, A., Menten, K. M., Reid, M. J., Imai, H., Hagiwara, Y., Miyoshi, M., Horiuchi, S., & Sasao, T.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2006-07
- Volume
- 645
- Issue
- 1
- Pages
- 337-344
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2046202567
- Cited by
- 201
- References
- 0
- FWCI
- 10.61
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Hachisuka, K., Brunthaler, A., Menten, K. M., Reid, M. J., Imai, H., Hagiwara, Y., Miyoshi, M., Horiuchi, S., & Sasao, T. (2006). Water Maser Motions in W3(OH) and a Determination of Its Distance. The Astrophysical Journal. https://doi.org/10.1086/502962
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