Abstract
view Abstract Citations (9) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Magnetic stellar envelopes and planetary nebulae. Aller, Lawrence H. Abstract It has been pointed out by Min~owski and others that the structural appearance of many planetary nebulae strongly suggest the presence of magnetic fields. It seems unli~ely that such magnetic fields are produced ab init~o in the nebular shell. Rather, they must have existed in the outer envelope of the parent star. Certain red giant stars with magnetic fields may evolve in such a way that the expansion of the shell is largely governed by the presence of such a field. Magnetic effects may actually be more important than gas pressure differentials and radiation pressure in controlling the evolution of a planetary nebula. The suggestion that combination variables such as AX Persei, BF Cygni, and Z Andromedae may be the immediate parents of the planetary nebulae now appears particularly tempting. Not all such stars necessarily are presumed to evolve into planetary nebulae. Univers?ty of M?chsgan Observatory, Ann Arbor, Mich. Publication: The Astronomical Journal Pub Date: February 1958 DOI: 10.1086/107826 Bibcode: 1958AJ.....63...47A full text sources ADS | data products SIMBAD (3)
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