Abstract
view Abstract Citations (62) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS New oscillator strengths for 18 resonance lines of N I and the interstellar abundance of nitrogen. Lugger, P. M. ; York, D. G. ; Blanchard, T. ; Morton, D. C. Abstract New f-values for 18 resonance lines of N I are derived and upper limits are obtained for four additional lines, using interstellar absorption lines observed with the Copernicus satellite. The f-values for the 24 detected N I resonance lines, including six with laboratory f-values, range from 10-1 to 10-6 and offer a unique opportunity for determining accurate interstellar abundances. The f-values derived are for lines between 950 A and 965 A, and for two weak features near 1160 A. A preliminary study of column densities shows that interstellar N I varies little in abundance from star to star and is within a factor of 4 of the solar value. Subject headings: atomic processes - interstellar: abundances - transition probabilities Publication: The Astrophysical Journal Pub Date: September 1978 DOI: 10.1086/156458 Bibcode: 1978ApJ...224.1059L Keywords: Abundance; Atomic Spectra; Interstellar Gas; Line Spectra; Nitrogen; Transition Probabilities; Oao 3; Optical Density; Oscillators; Ultraviolet Spectra; Astrophysics; Interstellar Matter:Nitrogen; Oscillator Strengths full text sources ADS | data products SIMBAD (10)
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