3 papers
astro-ph2001
Detection of an inner torus in the Proto planetary Nebulae OH231.8+4.2
J. -F. Desmurs, C. Sanchez Contreras, V. Bujarrabal +2
We performed the first VLBI observations of the SiO v=1 and v=2 J=1--0 masers in a Proto Planetary Nebula OH 231.8+4.2 (also known as the Rotten Egg nebula), at milliarcsecond reso…
astro-ph2000
VLBA observations of SiO masers: Arguments in favor of radiative pumping mechanisms
J. F. Desmurs, V. Bujarrabal, F. Colomer +1
We have performed VLBA observations of the SiO v=1 and v=2 J=1-0 masers in two AGB stars, TX Cam and IRC +10011. We confirm the ring-like spatial distribution, previously found in…
astro-ph1999
Molecular emission from the shocked bipolar outflow in OH231.8+4.2
C. Sanchez Contreras, V. Bujarrabal, R. Neri +1
We present high-resolution observations of several molecular lines in OH231.8+4.2 taken with the IRAM interferometer. All molecules are distributed in a narrow region along the sym…