Spectral atlas of A-type supergiants

Abstract

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 Å.

arXiv comment56 pages, 2 tables, 10 figures

References in corpus (12)

• Imaging the spinning gas and dust in the disc around the supergiant A[e] star HD62623
• Evolution of blue supergiants and αCygni variables; Puzzling CNO surface abundances
• Luminous and Variable Stars in M31 and M33. I. The Warm Hypergiants and Post-Red Supergiant Evolution
• A deep insight into the Mg-Al nucleosynthesis in massive AGBs and SAGB stars
• Quantitative spectroscopy of Deneb
• Massive Stars in the Galaxies of the Local Group
• Resolving the dusty circumstellar environment of the A[e] supergiant HD 62623 with the VLTI/MIDI
• Dusty Blue Supergiants: News from High-Angular Resolution Observations
• Spectral variability of the peculiar A-type supergiant 3Pup
• A Five-year Spectroscopic and Photometric Campaign on the Prototypical alpha Cygni Variable and A-type Supergiant Star Deneb
• V2324Cyg - an F-type star with fast wind
• Is the post-AGB star SAO 40039 mildly H-deficient?

Cited by in corpus (4)

• Spectroscopic survey of emission-line stars. I. B[e] stars
• Properties of Galactic B[e] Supergiants: V. 3 Pup -- constraining the orbital parameters and modeling the circumstellar environments
• Spectroscopy of supergiants with infrared excess: results of 1998-2018
• On the evolutionary status of high-latitude variable V534 Lyr