Dynamical parallax, physical parameters, and evolutionary status of the components of the bright eclipsing binary alpha Draconis

Pavlovski, K.; Hummel, C.; Tkachenko, A.; Dervisoglu, AHMET; Kayhan, CENK; Zavala, R.; Hutter, D.; Tycner, C.; Şahin, Timur; Audenaert, J.; Baeyens, R.; Bodensteiner, J.; Bowman, D.; Gebruers, S.; Jannsen, N.; Mombarg, J.

doi:10.1051/0004-6361/202142292

Dynamical parallax, physical parameters, and evolutionary status of the components of the bright eclipsing binary alpha Draconis

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Pavlovski K., Hummel C. A., Tkachenko A., Dervisoglu A., Kayhan C., Zavala R. T., ...More

ASTRONOMY & ASTROPHYSICS, vol.658, 2022 (SCI-Expanded)

Publication Type: Article / Article
Volume: 658
Publication Date: 2022
Doi Number: 10.1051/0004-6361/202142292
Journal Name: ASTRONOMY & ASTROPHYSICS
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
Keywords: stars: fundamental parameters, binaries: spectroscopic, binaries: eclipsing, techniques: interferometric, techniques: spectroscopic, stars: individual: alpha Dra
Erciyes University Affiliated: Yes

Abstract

Aims. Both components of the bright eclipsing binary a Dra have been resolved using long baseline interferometry and the secondary component has been shown to contribute approximately 15% of the total flux; however, a spectroscopic detection of the companion star has so far been unsuccessful. We aim for a firm spectroscopic detection of the secondary component of alpha Dra using state-of-the-art spectroscopic analysis methods for very high-quality spectroscopic observations. This will allow the determination of fundamental and atmospheric properties of the components in the system with high precision and accuracy.