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- Title
Spectroscopy of close visual binary components of the stable shell star 1 Delphini (Research Note).
- Authors
Kubát, Jiří; Kubátová, Brankica; Doležalová, Barbora; Iliev, Lubomir; Šlechta, Miroslav
- Abstract
Stable shell stars are ideal objects for studying basic physical principles of the formation of disks in Be stars. If these stars have a close unresolved visual companion, its contribution toward the modelling of the disk cannot be overlooked, as is sometimes done. The study aims to spectroscopically resolve close visual binary Be (shell) star 1 Del, which up to now was only resolved by speckle or micrometric measurements. The integral field spectroscopy obtained by the SINFONI spectrograph at the VLT telescope in the European Southern Observatory (ESO) in the infrared region was used; we supplemented these observations with visual spectroscopy with the Perek Telescope at the Ond?rejov Observatory. Spectra of 1 Del were successfully resolved, and, for the first time, spectra of 1 Del B were obtained. We found that 1 DelA is a Be/shell star, while 1 Del B is not an emission-line object.
- Subjects
SHELL stars; DISKS (Astrophysics); MICROMETRY; SPECKLE metrology; STABILITY theory; EUROPEAN Southern Observatory; STELLAR spectra
- Publication
Astronomy & Astrophysics / Astronomie et Astrophysique, 2016, Vol 587, p1
- ISSN
0004-6361
- Publication type
Article
- DOI
10.1051/0004-6361/201526414