Abstract
view Abstract Citations (33) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Electric fields, accretion, and stellar winds in helium-rich atmospheres. Michaud, G. ; Fontaine, G. Abstract It is suggested that the electric fields of stellar atmospheres play an essential role in the accretion and mass ejection processes, especially of He-rich stars. The static configuration implies an electric field that is strong enough to push protons outward, but sufficiently weak to enable as many electrons as protons to escape. This process can stop hydrogen accretion on white dwarfs and may thus explain the existence of He-rich white-dwarf atmospheres in an H-rich environment. However, a hot corona must be postulated. It also gives the driving force needed for the stellar wind which is probably necessary to explain the He-rich main-sequence stars. At the same time, a pure helium white dwarf need not be created with no hydrogen. Any remaining hydrogen will be expelled. Publication: The Astrophysical Journal Pub Date: April 1979 DOI: 10.1086/157004 Bibcode: 1979ApJ...229..694M Keywords: Electric Fields; Helium Hydrogen Atmospheres; Stellar Atmospheres; Stellar Mass Accretion; Stellar Winds; White Dwarf Stars; Electrons; Interstellar Gas; Protons; Stellar Coronas; Stellar Mass Ejection; Astrophysics; Accretion:Stellar Atmospheres; Atmospheres:Helium Stars; Atmospheres:White Dwarfs; Stellar Atmospheres:Models; Stellar Atmospheres:Stellar Winds full text sources ADS |
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