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Bujarrabal, V. ; Gonzalo Fonrodona, Isabel ; Salinas, F. | American Astronomical Society | 1984-10-01Along with the very frequent occurrence of every CH 9 cm line inversion, CH radio observations also show the existence of antother almost universal characteristic of thes lines’s excitation: the overexcitation of the satellite F = 0? 1 line. Att[...]texto impreso
Sánchez Contreras, C. ; Bujarrabal, V. ; Miranda, L. F. ; Fernández Figueroa, María José | EDP Sciencies | 2000-03We present optical long-slit spectra and complementary broad and narrow band images of the bipolar protoplanetary nebula OH231.8+4.2. Absolute J2000 coordinates have been calculated for our maps from the position of nearby stars. Our maps of the[...]
