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Proceedings of The 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting — PoS(IX EVN Symposium)
We present recent interferometric observations made with the VLTI/MIDI intrument and MER-LIN towards OH 231.8+4.2 allowing us to investigate the circumstellar material morphology from very near to the central object to far out where the OH masers are found. The VLTI observations revealed that the shape of the central core is not the same at 8 and 13 µm, possibly due to emission from the dust being heated by the hot companion. The MERLIN observations in the 1667-MHz OH maser line revealed adoi:10.22323/1.072.0063 fatcat:tfyl6z2ywbdvvdt3ok4crthpr4