TY  - JOUR
AU  - Contreras, C. S.
AU  - Gil De Paz, Armando
AU  - Sahai, R.
PY  - 2004
DO  - 10.1086/424827
SN  - 0004-637X
UR  - https://hdl.handle.net/20.500.14352/51797
T2  - Astrophysical journal
AB  - We present deep optical long-slit spectra of the peculiar protoplanetary nebula (PPN) OH 231.8+4.2 obtained with the 6.5 m Baade Telescope at Las Campanas Observatory (Chile). In addition to the molecular absorption bands characteristic of the M9–10...
LA  - eng
M2  - 519
PB  - American Astronomical Society
KW  - Sio maser emission
KW  - Planetary-nebulae
KW  - Bipolar outflow
KW  - Symbiotic miras
KW  - OH 231.8+4.2
KW  - AGB
KW  - Spectra
KW  - System
KW  - Jets
TI  - The companion to the central mira star of the protoplanetary nebula OH 231.8+4.2
TY  - journal article
VL  - 616
ER  -