Solar log gf values in the infrared J and H bands

Abstract

Solar IR spectra have been utilized to derive log gf values for atomic lines due to 17 chemical elements. From a recent publication in Astronomy and Astrophysics Supplement, we selected unblended solar lines in the infrared J and H bands, i.e., in the wavelength ranges 1.00 – 1.34 µ m and 1.49 – 1.80 µ m respectively. The observed central line depths defined by d= (I cont. –I line) / I cont’ were based on FTS atlases published at Liege and kitt Peak national observatory. The observed central line depths were fitted with the corresponding quantities in the calculated spectrum obtained using computer codes and a reliable solar model atmosphere. This provided us with a set of relative log gf values which present here. Significant differences are noticed between the derived log gf values and those available in literature.