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Published in

Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S336(13), p. 373-376

DOI: 10.1017/s1743921317010547

Oxford University Press (OUP), Monthly Notices of the Royal Astronomical Society, 1(476), p. 520-527

DOI: 10.1093/mnras/sty239

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Registration of H2O and SiO masers in the Calabash Nebula to confirm the planetary nebula paradigm

Journal article published in 2017 by R. Dodson ORCID, M. Rioja, V. Bujarrabal, J. Kim, S. H. Cho, Y. K. Choi, Y. Youngjoo
This paper is available in a repository.
This paper is available in a repository.

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Abstract

AbstractWe report on the astrometric registration of VLBI images of the SiO and H2O masers in OH 231.8+4.2, the iconic Proto-Planetary Nebula also known as the Calabash nebula, using the KVN and Source/Frequency Phase Referencing. This, for the first time, robustly confirms the alignment of the SiO masers, close to the AGB star, which drives the bi-lobe structure with the water masers in the out-flow.