Transition probabilities in TI I and the solar titanium abundance

Abstract

view Abstract Citations (45) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Transition probabilities in Ti I and the solar titanium abundance. Whaling, W. ; Scalo, J. M. ; Testerman, L. Abstract Branching ratios have been measured for 103 lines from 14 levels in Ti I, and absolute transition probabilities have been determined by combining these branching ratios with the radiative lifetimes measured by Roberts, Sorensen, and Andersen (1973) by the beam-foil method. The solar equivalent width at the disk center has been measured for 23 of these lines on the preliminary edition of the Kitt Peak Solar Atlas. The solar Ti abundance has been computed by matching the equivalent widths of 15 of the weakest lines and by fitting the profiles of 16 lines. The two methods yield an average photospheric abundance log (N(Ti)/N(H)) + 12 = 4.98 plus or minus 0.15 based on the HSRA solar model. Publication: The Astrophysical Journal Pub Date: March 1977 DOI: 10.1086/155077 Bibcode: 1977ApJ...212..581W Keywords: Abundance; Line Spectra; Meteoritic Composition; Solar Spectra; Titanium; Transition Probabilities; Atomic Spectra; Branching (Mathematics); Photosphere; Radiative Lifetime; Spectral Line Width; Spectrum Analysis; Tables (Data); Solar Physics full text sources ADS |