Registration of H<SUB>2</SUB>O and SiO masers in the Calabash Nebula, to confirm the Planetary Nebula paradigm

doi:10.1017/S1743921317010547

Registration of H₂O and SiO masers in the Calabash Nebula, to confirm the Planetary Nebula paradigm

We 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.

Publication:

Astrophysical Masers: Unlocking the Mysteries of the Universe

Pub Date:

August 2018

DOI:

10.1017/S1743921317010547

Bibcode:

2018IAUS..336..373D

Keywords:

stars: individual: QX Pup-stars: AGB and post-AGB-masers-stars: evolution

ADS

Registration of H2O and SiO masers in the Calabash Nebula, to confirm the Planetary Nebula paradigm

Abstract

Registration of H₂O and SiO masers in the Calabash Nebula, to confirm the Planetary Nebula paradigm