2001/02/20 by Han Qiu, Gang Zhao, Y. Q. Chen +1 · 2 citations
Physics and Astronomy · #Stellar, planetary, and galactic studies #Astro and Planetary Science #Astrophysics and Star Formation Studies
paper · doi:10.1086/319000
openalex publication_date 2001/02/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
On the basis of high-resolution echelle spectra obtained with the Coude Echelle Spectrograph attached to the 2.16 m telescope at the Beijing Astronomical Observatory (Xinglong, China) for Sirius and Vega, we performed an elemental abundance analysis of 29 ions, in which 23 elements are included, with Teff = 9880, log g = 4.40, [Fe/H] = 0.50, and ξt = 1.85 km s-1 for Sirius and Teff = 9430, log g = 3.95, [Fe/H] = -0.57, and ξt = 1.50 km s-1 for Vega. The results show different abundance patterns for these two stars. The iron peak elements seem to be enhanced by about 1.0 dex in Sirius relative to Vega. Comparison with previous investigations is present.