On Bowen enhancement of the N III spectrum under solar and nebular conditions

Abstract

view Abstract Citations (10) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On bowen enhancement of the N III spectrum under solar and nebular conditions. Kastner, S. O. ; Bhatia, A. K. Abstract Expected enhancement of the N III emission-line spectrum by the Bowen He II → O III → N III resonant photoexcitation process is computed using a six-configuration model. Preliminary comparisons with available solar and nebular observations indicate that the process may play only a small role, although photoexcitation quenching of the N III and O III far-infrared fine-structure lines is noted as a possible important mechanism. Some features are discussed in connection with the nebular emission at 1750 Å, which is suggested as an indicator of excitation class for planetary nebulae. Publication: The Astrophysical Journal Pub Date: December 1984 DOI: 10.1086/162751 Bibcode: 1984ApJ...287..945K Keywords: Line Spectra; Planetary Nebulae; Solar Spectra; Stellar Spectrophotometry; Electron Density (Concentration); Electron Energy; Nitrogen; Astrophysics full text sources ADS | data products SIMBAD (11)