Improved Ni i log(gf) values and abundance determinations in the photospheres of the sun and metal-poor star HD 84937
Küçük Resim Yok
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Physics Publishing
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Atomic transition probability measurements for 371 Ni I lines in the UV through near-IR are reported. Branching fractions from data recorded using a Fourier transform spectrometer and a new echelle spectrograph are combined with published radiative lifetimes to determine these transition probabilities. Generally good agreement is found in comparisons to previously reported Ni I transition probability measurements. Use of the new echelle spectrograph, independent radiometric calibration methods, and independent data analysis routines enable a reduction of systematic errors and overall improvement in transition probability uncertainty over previous measurements. The new Ni I data are applied to high-resolution visible and UV spectra of the Sun and metal-poor star HD 84937 to derive new, more accurate Ni abundances. Lines covering a wide range of wavelength and excitation potential are used to search for non-LTE effects. © 2014. The American Astronomical Society. All rights reserved..
Açıklama
Anahtar Kelimeler
abundances, abundances stars, atomic data methods, atomic stars, individual (HD 84937) Sun, laboratory
Kaynak
Astrophysical Journal, Supplement Series
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
211
Sayı
2
