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Annual Parallax Measurements of an Infrared Dark Cloud MSXDC G034.43+00.24

Published online by Cambridge University Press:  24 July 2012

Tomoharu Kurayama
Tomoharu Kurayama*
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan email: [email protected]
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Abstract

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We have measured the annual parallax of the H2O maser associated with an infrared dark cloud, MSXDC G034.43+00.24, with VERA. The parallax is 0.643 ± 0.049 mas, corresponding to a distance of 1.56+0.12−0.11 kpc. This value is less than half of the previous kinematic distance of 3.7 kpc. We revised the core-mass estimates of MSXDC G034.43+00.24 from the previous estimations of 1000M⊙ to hundreds of M⊙. The spectral type is still consistent with that of the massive star.

Keywords

astrometryIRDCstar formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 417 - 418
Copyright
Copyright © International Astronomical Union 2012

References

Kurayama, T., Nakagawa, A., Sawada-Satoh, S., Sato, K., Honma, M., Sunada, K., Hirota, T., & Imai, H. 2011, PASJ, 63, 513CrossRefGoogle Scholar
Motogi, K., Sorai, K., Habe, A., Honma, M., Kobayashi, H., & Sato, K. 2011, PASJ, 62, 101Google Scholar
Rathborne, J. M., Jackson, J. M., & Simon, R. 2006, ApJ, 641, 389Google Scholar
Rathborne, J. M., Jackson, J. M., Chambers, E. T., Simon, R., Shipman, R., & Frieswijk, W. 2005, ApJ, 630, L181Google Scholar
Sanhueza, P., Garay, G., Bronfman, L., Mardones, D., May, J., & Saito, M. 2010, ApJ, 715, 18CrossRefGoogle Scholar
Sato, M., Hirota, T., Reid, M. J., Honma, M., Kobayashi, H., Iwadate, K., Miyaji, T., & Shibata, K. M. 2010, PASJ, 62, 287Google Scholar
Simon, R., Rathborne, J. M., Shah, R. Y., Jackson, J. M., & Chambers, E. T. 2006, ApJ, 653, 1325CrossRefGoogle Scholar
Wang, Y., Zhang, Q., Rathborne, J. M., Jackson, J., & Wu, Y. 2006, ApJ, 651, L125Google Scholar