http://arxiv.org/abs/1502.01444
Based on high-spectral-resolution observations (R=60000) performed with the 6-m BTA telescope in combination with the echelle spectrograph NES, we have studied the optical spectra of three A-type supergiants: a peculiar supergiant 3 Pup, a post-AGB star BD+48 1220, and a massive $\alpha$ Cyg, which belong to essentially different stages of evolution. A spectral atlas for these stars is prepared in the wavelength interval of 3920 to 6720 \AA.
V. Klochkova, E. Sendzikas and E. Chentsov
Fri, 6 Feb 15
25/59
Comments: 56 pages, 2 tables, 10 figures
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